diff --git a/tests/Mods/ModsReaderTest.php b/tests/Mods/ModsReaderTest.php
index 38e5231..d9aa29a 100644
--- a/tests/Mods/ModsReaderTest.php
+++ b/tests/Mods/ModsReaderTest.php
@@ -18,16 +18,16 @@ class ModsReaderTest extends TestCase
 {
 
     /**
-     * @access private
+     * @access protected
      * @var ModsReader The MODS metadata reader for book document
      **/
-    private $bookReader;
+    protected $bookReader;
 
     /**
-     * @access private
+     * @access protected
      * @var ModsReader The MODS metadata reader for serial document
      **/
-    private $serialReader;
+    protected $serialReader;
 
     /**
      * This method is called before each test.
@@ -47,1474 +47,4 @@ protected function setUp(): void
     protected function tearDown(): void
     {
     }
-
-    public function testGetAbstractForBookDocument()
-    {
-        $abstract = $this->bookReader->getAbstract();
-        self::assertNotNull($abstract);
-        self::assertNotEmpty($abstract->getDisplayLabel());
-        self::assertEquals('Content description', $abstract->getDisplayLabel());
-        self::assertNotEmpty($abstract->getValue());
-        self::assertEquals('Test description for document which contains display label.', $abstract->getValue());
-        self::assertTrue($abstract->isShareable());
-    }
-
-    public function testGetAbstractByQueryForBookDocument()
-    {
-        $abstract = $this->bookReader->getAbstract('[@displayLabel="Content description"]');
-        self::assertNotNull($abstract);
-        self::assertNotEmpty($abstract->getDisplayLabel());
-        self::assertEquals('Content description', $abstract->getDisplayLabel());
-        self::assertNotEmpty($abstract->getValue());
-        self::assertEquals('Test description for document which contains display label.', $abstract->getValue());
-        self::assertTrue($abstract->isShareable());
-    }
-
-    public function testGetNoAbstractByQueryForBookDocument()
-    {
-        $abstract = $this->bookReader->getAbstract('[@displayLabel="Random"]');
-        self::assertNull($abstract);
-    }
-
-    public function testGetAbstractForSerialDocument()
-    {
-        $abstract = $this->serialReader->getAbstract();
-        self::assertNotNull($abstract);
-        self::assertEmpty($abstract->getDisplayLabel());
-        self::assertNotEmpty($abstract->getValue());
-        self::assertEquals('Test description for non shareable document.', $abstract->getValue());
-        self::assertFalse($abstract->isShareable());
-    }
-
-    public function testGetAbstractByQueryForSerialDocument()
-    {
-        $abstract = $this->serialReader->getAbstract('[@shareable="no"]');
-        self::assertNotNull($abstract);
-        self::assertEmpty($abstract->getDisplayLabel());
-        self::assertNotEmpty($abstract->getValue());
-        self::assertEquals('Test description for non shareable document.', $abstract->getValue());
-        self::assertFalse($abstract->isShareable());
-    }
-
-    public function testGetNoAbstractByQueryForSerialDocument()
-    {
-        $abstract = $this->serialReader->getAbstract('[@shareable="yes"]');
-        self::assertNull($abstract);
-    }
-
-    public function testGetAccessConditionsForBookDocument()
-    {
-        $accessConditions = $this->bookReader->getAccessConditions();
-        self::assertNotEmpty($accessConditions);
-        self::assertEquals(1, count($accessConditions));
-        self::assertNotEmpty($accessConditions[0]->getValue());
-        self::assertEquals('Use of this public-domain resource is unrestricted.', $accessConditions[0]->getValue());
-        self::assertNotEmpty($accessConditions[0]->getType());
-        self::assertEquals('use and reproduction', $accessConditions[0]->getType());
-        self::assertEmpty($accessConditions[0]->getDisplayLabel());
-        self::assertEmpty($accessConditions[0]->getXlinkHref());
-    }
-
-    public function testGetAccessConditionsByQueryForBookDocument()
-    {
-        $accessConditions = $this->bookReader->getAccessConditions('[@type="use and reproduction"]');
-        self::assertNotEmpty($accessConditions);
-        self::assertEquals(1, count($accessConditions));
-        self::assertNotEmpty($accessConditions[0]->getValue());
-        self::assertEquals('Use of this public-domain resource is unrestricted.', $accessConditions[0]->getValue());
-        self::assertNotEmpty($accessConditions[0]->getType());
-        self::assertEquals('use and reproduction', $accessConditions[0]->getType());
-        self::assertEmpty($accessConditions[0]->getDisplayLabel());
-        self::assertEmpty($accessConditions[0]->getXlinkHref());
-
-        $firstAccessCondition = $this->bookReader->getFirstAccessCondition('[@type="use and reproduction"]');
-        self::assertEquals($accessConditions[0], $firstAccessCondition);
-
-        $lastAccessCondition = $this->bookReader->getLastAccessCondition('[@type="use and reproduction"]');
-        self::assertEquals($accessConditions[0], $lastAccessCondition);
-    }
-
-    public function testGetNoAccessConditionsByQueryForBookDocument()
-    {
-        $accessConditions = $this->bookReader->getAccessConditions('[@type="restriction on access"]');
-        self::assertEmpty($accessConditions);
-
-        $firstAccessCondition = $this->bookReader->getFirstAccessCondition('[@type="restriction on access"]');
-        self::assertNull($firstAccessCondition);
-
-        $lastAccessCondition = $this->bookReader->getLastAccessCondition('[@type="restriction on access"]');
-        self::assertNull($lastAccessCondition);
-    }
-
-    public function testGetAccessConditionsForSerialDocument()
-    {
-        $accessConditions = $this->serialReader->getAccessConditions();
-        self::assertNotEmpty($accessConditions);
-        self::assertEquals(1, count($accessConditions));
-        self::assertNotEmpty($accessConditions[0]->getValue());
-        self::assertEquals('Open Access', $accessConditions[0]->getValue());
-        self::assertNotEmpty($accessConditions[0]->getType());
-        self::assertEquals('restriction on access', $accessConditions[0]->getType());
-        self::assertNotEmpty($accessConditions[0]->getDisplayLabel());
-        self::assertEquals('Access Status', $accessConditions[0]->getDisplayLabel());
-        // TODO: check out xlink
-        //self::assertEquals('http://purl.org/eprint/accessRights/OpenAccess', $accessConditions[0]->getXlinkHref());
-    }
-
-    public function testGetAccessConditionsByQueryForSerialDocument()
-    {
-        $accessConditions = $this->serialReader->getAccessConditions('[@type="restriction on access"]');
-        self::assertNotEmpty($accessConditions);
-        self::assertEquals(1, count($accessConditions));
-        self::assertNotEmpty($accessConditions[0]->getValue());
-        self::assertEquals('Open Access', $accessConditions[0]->getValue());
-        self::assertNotEmpty($accessConditions[0]->getType());
-        self::assertEquals('restriction on access', $accessConditions[0]->getType());
-        self::assertNotEmpty($accessConditions[0]->getDisplayLabel());
-        self::assertEquals('Access Status', $accessConditions[0]->getDisplayLabel());
-        // TODO: check out xlink
-        //self::assertEquals('http://purl.org/eprint/accessRights/OpenAccess', $accessConditions[0]->getXlinkHref());
-    }
-
-    public function testGetNoAccessConditionsByQueryForSerialDocument()
-    {
-        $accessConditions = $this->serialReader->getAccessConditions('[@type="use and reproduction"]');
-        self::assertEmpty($accessConditions);
-    }
-
-    public function testGetClassificationsForBookDocument()
-    {
-        $classifications = $this->bookReader->getClassifications();
-        self::assertNotEmpty($classifications);
-        self::assertEquals(2, count($classifications));
-        self::assertNotEmpty($classifications[0]->getValue());
-        self::assertEquals('PN4888.P6 A48 1999', $classifications[0]->getValue());
-        self::assertNotEmpty($classifications[0]->getAuthority());
-        self::assertEquals('lcc', $classifications[0]->getAuthority());
-        self::assertEmpty($classifications[0]->getId());
-        self::assertEmpty($classifications[0]->getUsage());
-
-        $firstClassification = $this->bookReader->getFirstClassification();
-        self::assertEquals($classifications[0], $firstClassification);
-
-        $lastClassification = $this->bookReader->getLastClassification();
-        self::assertEquals($classifications[1], $lastClassification);
-    }
-
-    public function testGetClassificationsByQueryForBookDocument()
-    {
-        $classifications = $this->bookReader->getClassifications('[@authority="ddc"]');
-        self::assertNotEmpty($classifications);
-        self::assertEquals(1, count($classifications));
-        self::assertNotEmpty($classifications[0]->getValue());
-        self::assertEquals('071/.3', $classifications[0]->getValue());
-        self::assertNotEmpty($classifications[0]->getEdition());
-        self::assertEquals('21', $classifications[0]->getEdition());
-        self::assertEmpty($classifications[0]->getDisplayLabel());
-        self::assertEmpty($classifications[0]->getGenerator());
-    }
-
-    public function testGetNoClassificationsByQueryForBookDocument()
-    {
-        $classifications = $this->bookReader->getClassifications('[@generator="xyz"]');
-        self::assertEmpty($classifications);
-
-        $firstClassification = $this->bookReader->getFirstClassification('[@generator="xyz"]');
-        self::assertNull($firstClassification);
-
-        $lastClassification = $this->bookReader->getLastClassification('[@generator="xyz"]');
-        self::assertNull($lastClassification);
-    }
-
-    public function testGetClassificationsForSerialDocument()
-    {
-        $classifications = $this->serialReader->getClassifications();
-        self::assertNotEmpty($classifications);
-        self::assertEquals(1, count($classifications));
-        self::assertNotEmpty($classifications[0]->getValue());
-        self::assertEquals('027.7/05', $classifications[0]->getValue());
-        self::assertNotEmpty($classifications[0]->getAuthority());
-        self::assertEquals('ddc', $classifications[0]->getAuthority());
-        self::assertNotEmpty($classifications[0]->getEdition());
-        self::assertEquals('21', $classifications[0]->getEdition());
-        self::assertEmpty($classifications[0]->getDisplayLabel());
-        self::assertEmpty($classifications[0]->getGenerator());
-    }
-
-    public function testGetClassificationsByQueryForSerialDocument()
-    {
-        $classifications = $this->serialReader->getClassifications('[@authority="ddc"]');
-        self::assertNotEmpty($classifications);
-        self::assertEquals(1, count($classifications));
-        self::assertNotEmpty($classifications[0]->getValue());
-        self::assertEquals('027.7/05', $classifications[0]->getValue());
-        self::assertNotEmpty($classifications[0]->getAuthority());
-        self::assertEquals('ddc', $classifications[0]->getAuthority());
-        self::assertNotEmpty($classifications[0]->getEdition());
-        self::assertEquals('21', $classifications[0]->getEdition());
-        self::assertEmpty($classifications[0]->getDisplayLabel());
-        self::assertEmpty($classifications[0]->getGenerator());
-    }
-
-    public function testGetNoClassificationsByQueryForSerialDocument()
-    {
-        $classifications = $this->serialReader->getClassifications('[@edition="22"]');
-        self::assertEmpty($classifications);
-    }
-
-    public function testGetExtensionsForBookDocument()
-    {
-        $extensions = $this->bookReader->getExtensions();
-
-        $this->assertTrue(true, 'WIP');
-    }
-
-    public function testGetExtensionsForSerialDocument()
-    {
-        $extensions = $this->serialReader->getExtensions();
-
-        $this->assertTrue(true, 'WIP');
-    }
-
-    public function testGetGenresForBookDocument()
-    {
-        $genres = $this->bookReader->getGenres();
-        self::assertNotEmpty($genres);
-        self::assertEquals(1, count($genres));
-        self::assertNotEmpty($genres[0]->getValue());
-        self::assertEquals('bibliography', $genres[0]->getValue());
-        self::assertNotEmpty($genres[0]->getAuthority());
-        self::assertEquals('marcgt', $genres[0]->getAuthority());
-        self::assertEmpty($genres[0]->getLang());
-        self::assertEmpty($genres[0]->getScript());
-    }
-
-    public function testGetGenresByQueryForBookDocument()
-    {
-        $genres = $this->bookReader->getGenres('[@authority="marcgt"]');
-        self::assertNotEmpty($genres);
-        self::assertEquals(1, count($genres));
-        self::assertNotEmpty($genres[0]->getValue());
-        self::assertEquals('bibliography', $genres[0]->getValue());
-        self::assertNotEmpty($genres[0]->getAuthority());
-        self::assertEquals('marcgt', $genres[0]->getAuthority());
-        self::assertEmpty($genres[0]->getLang());
-        self::assertEmpty($genres[0]->getScript());
-    }
-
-    public function testGetNoGenresByQueryForBookDocument()
-    {
-        $genres = $this->bookReader->getGenres('[@authority="merc"]');
-        self::assertEmpty($genres);
-
-        $firstGenre = $this->bookReader->getFirstGenre('[@authority="merc"]');
-        self::assertNull($firstGenre);
-
-        $lastGenre = $this->bookReader->getLastGenre('[@authority="merc"]');
-        self::assertNull($lastGenre);
-    }
-
-    public function testGetGenresForSerialDocument()
-    {
-        $genres = $this->serialReader->getGenres();
-        self::assertNotEmpty($genres);
-        self::assertEquals(2, count($genres));
-        self::assertNotEmpty($genres[0]->getValue());
-        self::assertEquals('periodical', $genres[0]->getValue());
-        self::assertNotEmpty($genres[0]->getUsage());
-        self::assertEquals('primary', $genres[0]->getUsage());
-        self::assertEmpty($genres[0]->getDisplayLabel());
-        self::assertEmpty($genres[0]->getTransliteration());
-
-        $firstGenre = $this->serialReader->getFirstGenre();
-        self::assertEquals($genres[0], $firstGenre);
-
-        $lastGenre = $this->serialReader->getLastGenre();
-        self::assertEquals($genres[1], $lastGenre);
-    }
-
-    public function testGetGenresByQueryForSerialDocument()
-    {
-        $genres = $this->serialReader->getGenres('[@usage="primary"]');
-        self::assertNotEmpty($genres);
-        self::assertEquals(1, count($genres));
-        self::assertNotEmpty($genres[0]->getValue());
-        self::assertEquals('periodical', $genres[0]->getValue());
-        self::assertNotEmpty($genres[0]->getUsage());
-        self::assertEquals('primary', $genres[0]->getUsage());
-        self::assertEmpty($genres[0]->getDisplayLabel());
-        self::assertEmpty($genres[0]->getTransliteration());
-    }
-
-    public function testGetNoGenresByQueryForSerialDocument()
-    {
-        $genres = $this->serialReader->getGenres('[@type="xyz"]');
-        self::assertEmpty($genres);
-    }
-
-    public function testGetIdentifiersForBookDocument()
-    {
-        $identifiers = $this->bookReader->getIdentifiers();
-        self::assertNotEmpty($identifiers);
-        self::assertEquals(2, count($identifiers));
-        self::assertNotEmpty($identifiers[0]->getValue());
-        self::assertEquals('0801486394 (pbk. : acid-free, recycled paper)', $identifiers[0]->getValue());
-        self::assertNotEmpty($identifiers[0]->getType());
-        self::assertEquals('isbn', $identifiers[0]->getType());
-        self::assertEmpty($identifiers[0]->getLang());
-        self::assertFalse($identifiers[0]->isInvalid());
-
-        $firstIdentifier = $this->bookReader->getFirstIdentifier();
-        self::assertEquals($identifiers[0], $firstIdentifier);
-
-        $lastIdentifier = $this->bookReader->getLastIdentifier();
-        self::assertEquals($identifiers[1], $lastIdentifier);
-    }
-
-    public function testGetIdentifiersByQueryForBookDocument()
-    {
-        $identifiers = $this->bookReader->getIdentifiers('[@type="lccn"]');
-        self::assertNotEmpty($identifiers);
-        self::assertEquals(1, count($identifiers));
-        self::assertNotEmpty($identifiers[0]->getValue());
-        self::assertEquals('99042030', $identifiers[0]->getValue());
-        self::assertNotEmpty($identifiers[0]->getType());
-        self::assertEquals('lccn', $identifiers[0]->getType());
-        self::assertEmpty($identifiers[0]->getLang());
-        self::assertFalse($identifiers[0]->isInvalid());
-    }
-
-    public function testGetNoIdentifiersByQueryForBookDocument()
-    {
-        $identifiers = $this->bookReader->getIdentifiers('[@type="xyz"]');
-        self::assertEmpty($identifiers);
-
-        $firstIdentifier = $this->bookReader->getFirstIdentifier('[@type="xyz"]');
-        self::assertNull($firstIdentifier);
-
-        $lastIdentifier = $this->bookReader->getLastIdentifier('[@type="xyz"]');
-        self::assertNull($lastIdentifier);
-    }
-
-    public function testGetIdentifiersForSerialDocument()
-    {
-        $identifiers = $this->serialReader->getIdentifiers();
-        self::assertNotEmpty($identifiers);
-        self::assertEquals(4, count($identifiers));
-        self::assertNotEmpty($identifiers[0]->getValue());
-        self::assertEquals('1704-8532', $identifiers[0]->getValue());
-        self::assertNotEmpty($identifiers[0]->getType());
-        self::assertEquals('issn', $identifiers[0]->getType());
-        self::assertEmpty($identifiers[0]->getDisplayLabel());
-        self::assertFalse($identifiers[0]->isInvalid());
-    }
-
-    public function testGetIdentifiersByQueryForSerialDocument()
-    {
-        $identifiers = $this->serialReader->getIdentifiers('[@type="issn"]');
-        self::assertNotEmpty($identifiers);
-        self::assertEquals(2, count($identifiers));
-        self::assertNotEmpty($identifiers[1]->getValue());
-        self::assertEquals('1525-321X', $identifiers[1]->getValue());
-        self::assertNotEmpty($identifiers[0]->getType());
-        self::assertEquals('issn', $identifiers[1]->getType());
-        self::assertEmpty($identifiers[1]->getDisplayLabel());
-        self::assertTrue($identifiers[1]->isInvalid());
-    }
-
-    public function testGetNoIdentifiersByQueryForSerialDocument()
-    {
-        $identifiers = $this->serialReader->getIdentifiers('[@type="xyz"]');
-        self::assertEmpty($identifiers);
-    }
-
-    public function testGetLanguagesForBookDocument()
-    {
-        $languages = $this->bookReader->getLanguages();
-        self::assertNotEmpty($languages);
-        self::assertEquals(2, count($languages));
-        self::assertEmpty($languages[0]->getObjectPart());
-        self::assertNotEmpty($languages[0]->getValue());
-        self::assertNotEmpty($languages[0]->getLanguageTerms());
-        self::assertNotEmpty($languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEquals('code', $languages[0]->getLanguageTerms()[0]->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerms()[0]->getAuthority());
-        self::assertEquals('eng', $languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertNotEmpty($languages[0]->getScriptTerms());
-        self::assertEquals('code', $languages[0]->getScriptTerms()[0]->getType());
-        self::assertEquals('iso15924', $languages[0]->getScriptTerms()[0]->getAuthority());
-        self::assertEquals('Latn', $languages[0]->getScriptTerms()[0]->getValue());
-
-        $firstLanguage = $this->bookReader->getFirstLanguage();
-        self::assertEquals($languages[0], $firstLanguage);
-
-        $lastLanguage = $this->bookReader->getLastLanguage();
-        self::assertEquals($languages[1], $lastLanguage);
-    }
-
-    public function testGetLanguagesByQueryForBookDocument()
-    {
-        $languages = $this->bookReader->getLanguages('[@objectPart="summary"]');
-        self::assertNotEmpty($languages);
-        self::assertEquals(1, count($languages));
-        self::assertNotEmpty($languages[0]->getObjectPart());
-        self::assertEquals('summary', $languages[0]->getObjectPart());
-        self::assertNotEmpty($languages[0]->getValue());
-        self::assertNotEmpty($languages[0]->getLanguageTerms());
-        self::assertNotEmpty($languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEquals('code', $languages[0]->getLanguageTerms()[0]->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerms()[0]->getAuthority());
-        self::assertEquals('spa', $languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertNotEmpty($languages[0]->getScriptTerms());
-        self::assertEquals('code', $languages[0]->getScriptTerms()[0]->getType());
-        self::assertEquals('iso15924', $languages[0]->getScriptTerms()[0]->getAuthority());
-        self::assertEquals('Latn', $languages[0]->getScriptTerms()[0]->getValue());
-    }
-
-    public function testGetNoLanguagesByQueryForBookDocument()
-    {
-        $languages = $this->bookReader->getLanguages('[@objectPart="abstract"]');
-        self::assertEmpty($languages);
-
-        $firstLanguage = $this->bookReader->getFirstLanguage('[@objectPart="abstract"]');
-        self::assertNull($firstLanguage);
-
-        $lastLanguage = $this->bookReader->getLastLanguage('[@objectPart="abstract"]');
-        self::assertNull($lastLanguage);
-    }
-
-    public function testGetLanguagesForSerialDocument()
-    {
-        $languages = $this->serialReader->getLanguages();
-        self::assertNotEmpty($languages);
-        self::assertEquals(1, count($languages));
-        self::assertEmpty($languages[0]->getObjectPart());
-        self::assertNotEmpty($languages[0]->getValue());
-        self::assertNotEmpty($languages[0]->getLanguageTerms());
-        self::assertNotEmpty($languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEquals('code', $languages[0]->getLanguageTerms()[0]->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerms()[0]->getAuthority());
-        self::assertEquals('eng', $languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEmpty($languages[0]->getScriptTerms());
-    }
-
-    public function testGetLanguagesByQueryForSerialDocument()
-    {
-        $languages = $this->serialReader->getLanguages('[./mods:languageTerm[@type="code"]]');
-        self::assertNotEmpty($languages);
-        self::assertEquals(1, count($languages));
-        self::assertEmpty($languages[0]->getObjectPart());
-        self::assertNotEmpty($languages[0]->getValue());
-        self::assertNotEmpty($languages[0]->getLanguageTerms());
-        self::assertNotEmpty($languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEquals('code', $languages[0]->getLanguageTerms()[0]->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerms()[0]->getAuthority());
-        self::assertEquals('eng', $languages[0]->getLanguageTerms()[0]->getValue());
-        self::assertEmpty($languages[0]->getScriptTerms());
-    }
-
-    public function testGetNoLanguagesByQueryForSerialDocument()
-    {
-        $languages = $this->serialReader->getLanguages('[@objectPart="summary"]');
-        self::assertEmpty($languages);
-    }
-
-    public function testGetLocationsForBookDocument()
-    {
-        $locations = $this->bookReader->getLocations();
-        self::assertNotEmpty($locations);
-        self::assertEquals(2, count($locations));
-        self::assertNotEmpty($locations[0]->getValue());
-
-        $physicalLocations = $locations[0]->getPhysicalLocations();
-        self::assertNotEmpty($physicalLocations);
-        self::assertEquals('marcorg', $physicalLocations[0]->getAuthority());
-        self::assertEquals('MnRM', $physicalLocations[0]->getValue());
-
-        $holdingSimple = $locations[0]->getHoldingSimple();
-        self::assertNotNull($holdingSimple);
-
-        $copyInformation = $holdingSimple->getCopyInformation();
-        self::assertNotEmpty($copyInformation);
-        self::assertNotEmpty($copyInformation[0]->getSubLocations());
-        self::assertEquals('Reading room', $copyInformation[0]->getSubLocations()[0]->getValue());
-        self::assertNotEmpty($copyInformation[0]->getShelfLocators());
-        self::assertEquals('QH511.A1J68', $copyInformation[0]->getShelfLocators()[0]->getValue());
-        self::assertEquals('1', $copyInformation[0]->getEnumerationAndChronologies()[0]->getUnitType());
-        self::assertEquals('v.1-v.2 1999-2002', $copyInformation[0]->getEnumerationAndChronologies()[0]->getValue());
-
-        $firstLocation = $this->bookReader->getFirstLocation();
-        self::assertEquals($locations[0], $firstLocation);
-
-        $lastLocation = $this->bookReader->getLastLocation();
-        self::assertEquals($locations[1], $lastLocation);
-    }
-
-    public function testGetLocationsByQueryForBookDocument()
-    {
-        $locations = $this->bookReader->getLocations('[@displayLabel="links"]');
-        self::assertNotEmpty($locations);
-        self::assertEquals(1, count($locations));
-        self::assertNotEmpty($locations[0]->getValue());
-
-        $urls = $locations[0]->getUrls();
-        self::assertNotEmpty($urls);
-        self::assertEquals(4, count($urls));
-        self::assertEquals('2024-01-27', $urls[0]->getDateLastAccessed());
-        self::assertEquals('http://www.slub-dresden.de/some-url', $urls[0]->getValue());
-        self::assertEquals('preview', $urls[1]->getAccess());
-        self::assertEquals('http://www.slub-dresden.de/some-url/SLO-0000', $urls[1]->getValue());
-
-        $this->expectException(IncorrectValueInAttributeException::class);
-        $urls[3]->getAccess();
-    }
-
-    public function testGetNoLocationsByQueryForBookDocument()
-    {
-        $locations = $this->bookReader->getLocations('[@displayLabel="random"]');
-        self::assertEmpty($locations);
-
-        $firstLocation = $this->bookReader->getFirstLocation('[@displayLabel="random"]');
-        self::assertNull($firstLocation);
-
-        $lastLocation = $this->bookReader->getLastLocation('[@displayLabel="random"]');
-        self::assertNull($lastLocation);
-    }
-
-    public function testGetLocationsForSerialDocument()
-    {
-        $locations = $this->serialReader->getLocations();
-        self::assertNotEmpty($locations);
-        self::assertEquals(2, count($locations));
-        self::assertNotEmpty($locations[0]->getUrls());
-        self::assertEquals('electronic resource', $locations[0]->getUrls()[0]->getDisplayLabel());
-        self::assertEquals('primaryDisplay', $locations[0]->getUrls()[0]->getUsage());
-        self::assertEquals('http://bibpurl.oclc.org/web/7085', $locations[0]->getUrls()[0]->getValue());
-    }
-
-    public function testGetLocationsByQueryForSerialDocument()
-    {
-        $locations = $this->serialReader->getLocations('[./mods:url[@usage="primaryDisplay"]]');
-        self::assertNotEmpty($locations);
-        self::assertEquals(1, count($locations));
-        self::assertNotEmpty($locations[0]->getUrls());
-        self::assertEquals('electronic resource', $locations[0]->getUrls()[0]->getDisplayLabel());
-        self::assertEquals('primaryDisplay', $locations[0]->getUrls()[0]->getUsage());
-        self::assertEquals('http://bibpurl.oclc.org/web/7085', $locations[0]->getUrls()[0]->getValue());
-    }
-
-    public function testNoGetLocationsByQueryForSerialDocument()
-    {
-        $locations = $this->serialReader->getLocations('[@usage="rad"]');
-        self::assertEmpty($locations);
-    }
-
-    public function testGetNamesForBookDocument()
-    {
-        $names = $this->bookReader->getNames();
-        self::assertNotEmpty($names);
-        self::assertEquals(2, count($names));
-        self::assertNotEmpty($names[0]->getType());
-        self::assertEquals('personal', $names[0]->getType());
-        self::assertNotEmpty($names[0]->getUsage());
-        self::assertEquals('primary', $names[0]->getUsage());
-        self::assertNotEmpty($names[0]->getValue());
-        self::assertNotEmpty($names[0]->getNameParts());
-        self::assertEquals('Alterman, Eric.', $names[0]->getNameParts()[0]->getValue());
-
-        $roles = $names[0]->getRoles();
-        self::assertNotEmpty($roles);
-        self::assertNotEmpty($roles[0]->getRoleTerms());
-        self::assertEquals('text', $roles[0]->getRoleTerms()[0]->getType());
-        self::assertEquals('marcrelator', $roles[0]->getRoleTerms()[0]->getAuthority());
-        self::assertEquals('creator', $roles[0]->getRoleTerms()[0]->getValue());
-
-        $firstName = $this->bookReader->getFirstName();
-        self::assertEquals($names[0], $firstName);
-
-        $lastName = $this->bookReader->getLastName();
-        self::assertEquals($names[1], $lastName);
-    }
-
-    public function testGetNamesByQueryForBookDocument()
-    {
-        $names = $this->bookReader->getNames('[@type="personal" and not(@usage="primary")]');
-        self::assertNotEmpty($names);
-        self::assertEquals(1, count($names));
-        self::assertNotEmpty($names[0]->getType());
-        self::assertEquals('personal', $names[0]->getType());
-        self::assertEmpty($names[0]->getUsage());
-        self::assertNotEmpty($names[0]->getValue());
-        self::assertNotEmpty($names[0]->getNameParts());
-        self::assertEquals(2, count($names[0]->getNameParts()));
-        self::assertEquals('given', $names[0]->getNameParts()[0]->getType());
-        self::assertEquals('Aron', $names[0]->getNameParts()[0]->getValue());
-
-        $roles = $names[0]->getRoles();
-        self::assertNotEmpty($roles);
-        self::assertNotEmpty($roles[0]->getRoleTerms());
-        self::assertEquals('text', $roles[0]->getRoleTerms()[0]->getType());
-        self::assertEquals('marcrelator', $roles[0]->getRoleTerms()[0]->getAuthority());
-        self::assertEquals('author', $roles[0]->getRoleTerms()[0]->getValue());
-    }
-
-    public function testGetNoNamesByQueryForBookDocument()
-    {
-        $names = $this->bookReader->getNames('[@type="corporate"]');
-        self::assertEmpty($names);
-
-        $firstName = $this->bookReader->getFirstName('[@type="corporate"]');
-        self::assertNull($firstName);
-
-        $lastName = $this->bookReader->getLastName('[@type="corporate"]');
-        self::assertNull($lastName);
-    }
-
-    public function testGetNamesForSerialDocument()
-    {
-        $names = $this->serialReader->getNames();
-        self::assertNotEmpty($names);
-        self::assertEquals(1, count($names));
-        self::assertNotEmpty($names[0]->getValue());
-        self::assertNotEmpty($names[0]->getNameParts());
-        self::assertEquals(1, count($names[0]->getNameParts()));
-        self::assertEquals('International Consortium for the Advancement of Academic Publication.', $names[0]->getNameParts()[0]->getValue());
-    }
-
-    public function testGetNamesByQueryForSerialDocument()
-    {
-        $names = $this->serialReader->getNames('[@type="corporate"]');
-        self::assertNotEmpty($names);
-        self::assertEquals(1, count($names));
-        self::assertNotEmpty($names[0]->getValue());
-        self::assertNotEmpty($names[0]->getNameParts());
-        self::assertEquals(1, count($names[0]->getNameParts()));
-        self::assertEquals('International Consortium for the Advancement of Academic Publication.', $names[0]->getNameParts()[0]->getValue());
-    }
-
-    public function testGetNoNamesByQueryForSerialDocument()
-    {
-        $names = $this->serialReader->getNames('[@type="personal"]');
-        self::assertEmpty($names);
-    }
-
-    public function testGetNotesForBookDocument()
-    {
-        $notes = $this->bookReader->getNotes();
-        self::assertNotEmpty($notes);
-        self::assertEquals(2, count($notes));
-        self::assertNotEmpty($notes[0]->getValue());
-        self::assertEquals('Eric Alterman.', $notes[0]->getValue());
-        self::assertNotEmpty($notes[0]->getType());
-        self::assertEquals('statement of responsibility', $notes[0]->getType());
-
-        $firstNote = $this->bookReader->getFirstNote();
-        self::assertEquals($notes[0], $firstNote);
-
-        $lastNote = $this->bookReader->getLastNote();
-        self::assertEquals($notes[1], $lastNote);
-    }
-
-    public function testGetNotesByQueryForBookDocument()
-    {
-        $notes = $this->bookReader->getNotes('[@type="bibliography"]');
-        self::assertNotEmpty($notes);
-        self::assertEquals(1, count($notes));
-        self::assertNotEmpty($notes[0]->getValue());
-        self::assertEquals('Includes bibliographical references (p. 291-312) and index.', $notes[0]->getValue());
-        self::assertNotEmpty($notes[0]->getType());
-        self::assertEquals('bibliography', $notes[0]->getType());
-    }
-
-    public function testGetNoNotesByQueryForBookDocument()
-    {
-        $notes = $this->bookReader->getNotes('[@type="xyz"]');
-        self::assertEmpty($notes);
-
-        $firstNote = $this->bookReader->getFirstNote('[@type="xyz"]');
-        self::assertNull($firstNote);
-
-        $lastNote = $this->bookReader->getLastNote('[@type="xyz"]');
-        self::assertNull($lastNote);
-    }
-
-    public function testGetNotesForSerialDocument()
-    {
-        $notes = $this->serialReader->getNotes();
-        self::assertNotEmpty($notes);
-        self::assertEquals(6, count($notes));
-        self::assertNotEmpty($notes[0]->getValue());
-        self::assertEquals('V. 3, no. 1/2 (winter 2002)-', $notes[0]->getValue());
-        self::assertNotEmpty($notes[0]->getType());
-        self::assertEquals('date/sequential designation', $notes[0]->getType());
-    }
-
-    public function testGetNotesByQueryForSerialDocument()
-    {
-        $notes = $this->serialReader->getNotes('[@type="system details"]');
-        self::assertNotEmpty($notes);
-        self::assertEquals(1, count($notes));
-        self::assertNotEmpty($notes[0]->getValue());
-        self::assertEquals('Mode of access: World Wide Web.', $notes[0]->getValue());
-        self::assertNotEmpty($notes[0]->getType());
-        self::assertEquals('system details', $notes[0]->getType());
-    }
-
-    public function testGetNoNotesByQueryForSerialDocument()
-    {
-        $notes = $this->serialReader->getNotes('[@type="xyz"]');
-        self::assertEmpty($notes);
-    }
-
-    public function testGetOriginInfosForBookDocument()
-    {
-        $originInfos = $this->bookReader->getOriginInfos();
-        self::assertNotEmpty($originInfos);
-        self::assertEquals(2, count($originInfos));
-        self::assertNotEmpty($originInfos[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getEventType());
-        self::assertEquals('publication', $originInfos[0]->getEventType());
-        self::assertNotEmpty($originInfos[0]->getPlaces());
-        self::assertEquals(2, count($originInfos[0]->getPlaces()));
-
-        $placeTerms = $originInfos[0]->getPlaces()[0]->getPlaceTerms();
-        self::assertNotEmpty($placeTerms);
-        self::assertEquals('marccountry', $placeTerms[0]->getAuthority());
-        self::assertEquals('code', $placeTerms[0]->getType());
-        self::assertEquals('nyu', $placeTerms[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuedDates());
-        self::assertEquals(2, count($originInfos[0]->getIssuedDates()));
-        self::assertEquals('marc', $originInfos[0]->getIssuedDates()[0]->getEncoding());
-        self::assertEquals('2000', $originInfos[0]->getIssuedDates()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuances());
-        self::assertEquals('monographic', $originInfos[0]->getIssuances()[0]->getValue());
-
-        $firstOriginInfo = $this->bookReader->getFirstOriginInfo();
-        self::assertEquals($originInfos[0], $firstOriginInfo);
-
-        $lastOriginInfo = $this->bookReader->getLastOriginInfo();
-        self::assertEquals($originInfos[1], $lastOriginInfo);
-    }
-
-    public function testGetOriginInfosByQueryForBookDocument()
-    {
-        $originInfos = $this->bookReader->getOriginInfos('[@eventType="redaction"]');
-        self::assertNotEmpty($originInfos);
-        self::assertEquals(1, count($originInfos));
-        self::assertNotEmpty($originInfos[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getEventType());
-        self::assertEquals('redaction', $originInfos[0]->getEventType());
-        self::assertNotEmpty($originInfos[0]->getPlaces());
-        self::assertEquals(2, count($originInfos[0]->getPlaces()));
-        $placeTerms = $originInfos[0]->getPlaces()[1]->getPlaceTerms();
-        self::assertNotEmpty($placeTerms);
-        self::assertEquals('text', $placeTerms[0]->getType());
-        self::assertEquals('Ithaca, N.Y', $placeTerms[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuedDates());
-        self::assertEquals(2, count($originInfos[0]->getIssuedDates()));
-        self::assertEquals('marc', $originInfos[0]->getIssuedDates()[0]->getEncoding());
-        self::assertEquals('1999', $originInfos[0]->getIssuedDates()[0]->getValue());
-        self::assertEmpty($originInfos[0]->getIssuances());
-    }
-
-    public function testGetNoOriginInfosByQueryForBookDocument()
-    {
-        $originInfos = $this->bookReader->getOriginInfos('[@eventType="xyz"]');
-        self::assertEmpty($originInfos);
-
-        $firstOriginInfo = $this->bookReader->getFirstOriginInfo('[@eventType="xyz"]');
-        self::assertNull($firstOriginInfo);
-
-        $lastOriginInfo = $this->bookReader->getLastOriginInfo('[@eventType="xyz"]');
-        self::assertNull($lastOriginInfo);
-    }
-
-    public function testGetOriginInfosForSerialDocument()
-    {
-        $originInfos = $this->serialReader->getOriginInfos();
-        self::assertNotEmpty($originInfos);
-        self::assertEquals(1, count($originInfos));
-        self::assertNotEmpty($originInfos[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getEventType());
-        self::assertEquals('publication', $originInfos[0]->getEventType());
-        self::assertNotEmpty($originInfos[0]->getPlaces());
-        self::assertEquals(2, count($originInfos[0]->getPlaces()));
-
-        $placeTerms = $originInfos[0]->getPlaces()[0]->getPlaceTerms();
-        self::assertNotEmpty($placeTerms);
-        self::assertEquals('marccountry', $placeTerms[0]->getAuthority());
-        self::assertEquals('code', $placeTerms[0]->getType());
-        self::assertEquals('abc', $placeTerms[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuedDates());
-        self::assertEquals(3, count($originInfos[0]->getIssuedDates()));
-        self::assertEquals('marc', $originInfos[0]->getIssuedDates()[0]->getEncoding());
-        self::assertEquals('start', $originInfos[0]->getIssuedDates()[0]->getPoint());
-        self::assertEquals('2002', $originInfos[0]->getIssuedDates()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuances());
-        self::assertEquals('serial', $originInfos[0]->getIssuances()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getFrequencies());
-        self::assertEquals(2, count($originInfos[0]->getFrequencies()));
-        self::assertEquals('Three times a year', $originInfos[0]->getFrequencies()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getAgents());
-        //self::assertNotEmpty($originInfos[0]->getAgents()[0]->getNamePart());
-    }
-
-    public function testGetOriginInfosByQueryForSerialDocument()
-    {
-        $originInfos = $this->serialReader->getOriginInfos('[@eventType="publication"]');
-        self::assertNotEmpty($originInfos);
-        self::assertEquals(1, count($originInfos));
-        self::assertNotEmpty($originInfos[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getEventType());
-        self::assertEquals('publication', $originInfos[0]->getEventType());
-        self::assertNotEmpty($originInfos[0]->getPlaces());
-        self::assertEquals(2, count($originInfos[0]->getPlaces()));
-
-        $placeTerms = $originInfos[0]->getPlaces()[0]->getPlaceTerms();
-        self::assertNotEmpty($placeTerms);
-        self::assertEquals('marccountry', $placeTerms[0]->getAuthority());
-        self::assertEquals('code', $placeTerms[0]->getType());
-        self::assertEquals('abc', $placeTerms[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuedDates());
-        self::assertEquals(3, count($originInfos[0]->getIssuedDates()));
-        self::assertEquals('marc', $originInfos[0]->getIssuedDates()[0]->getEncoding());
-        self::assertEquals('start', $originInfos[0]->getIssuedDates()[0]->getPoint());
-        self::assertEquals('2002', $originInfos[0]->getIssuedDates()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getIssuances());
-        self::assertEquals('serial', $originInfos[0]->getIssuances()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getFrequencies());
-        self::assertEquals(2, count($originInfos[0]->getFrequencies()));
-        self::assertEquals('Three times a year', $originInfos[0]->getFrequencies()[0]->getValue());
-        self::assertNotEmpty($originInfos[0]->getAgents());
-        //self::assertNotEmpty($originInfos[0]->getAgents()[0]->getNamePart());
-    }
-
-    public function testGetNoOriginInfosByQueryForSerialDocument()
-    {
-        $originInfos = $this->serialReader->getOriginInfos('[@eventType="xyz"]');
-        self::assertEmpty($originInfos);
-    }
-
-    public function testGetPartsForBookDocument()
-    {
-        $parts = $this->bookReader->getParts();
-        self::assertNotEmpty($parts);
-        self::assertEquals(2, count($parts));
-        self::assertNotEmpty($parts[0]->getValue());
-        self::assertNotEmpty($parts[0]->getType());
-        self::assertEquals('poem', $parts[0]->getType());
-        self::assertNotEmpty($parts[0]->getOrder());
-        self::assertEquals(1, $parts[0]->getOrder());
-        self::assertNotEmpty($parts[0]->getDetails());
-        self::assertNotEmpty($parts[0]->getDetails()[0]->getTitles());
-        self::assertEquals('Wayfarers', $parts[0]->getDetails()[0]->getTitles()[0]->getValue());
-        self::assertNotEmpty($parts[0]->getExtents());
-        self::assertEquals('pages', $parts[0]->getExtents()[0]->getUnit());
-        self::assertEquals('97', $parts[0]->getExtents()[0]->getStart()->getValue());
-        self::assertEquals('98', $parts[0]->getExtents()[0]->getEnd()->getValue());
-        self::assertNotEmpty($parts[0]->getDates());
-        self::assertEquals('marc', $parts[0]->getDates()[0]->getEncoding());
-        self::assertEquals('1989', $parts[0]->getDates()[0]->getValue());
-        self::assertNotEmpty($parts[0]->getTexts());
-        self::assertEquals('Some random text', $parts[0]->getTexts()[0]->getValue());
-
-        $firstPart = $this->bookReader->getFirstPart();
-        self::assertEquals($parts[0], $firstPart);
-
-        $lastPart = $this->bookReader->getLastPart();
-        self::assertEquals($parts[1], $lastPart);
-    }
-
-    public function testGetPartsByQueryForBookDocument()
-    {
-        $parts = $this->bookReader->getParts('[@order="2"]');
-        self::assertNotEmpty($parts);
-        self::assertEquals(1, count($parts));
-        self::assertNotEmpty($parts[0]->getValue());
-        self::assertNotEmpty($parts[0]->getType());
-        self::assertEquals('poem', $parts[0]->getType());
-        self::assertNotEmpty($parts[0]->getOrder());
-        self::assertEquals(2, $parts[0]->getOrder());
-        $details = $parts[0]->getDetails();
-        self::assertNotEmpty($details);
-        self::assertEquals(2, count($details));
-        self::assertEquals('begin', $details[0]->getType());
-        self::assertEquals(1, $details[0]->getLevel());
-        self::assertNotEmpty($details[0]->getTitles());
-        self::assertEquals('Vagabonds', $details[0]->getTitles()[0]->getValue());
-        self::assertNotEmpty($parts[0]->getExtents());
-        self::assertEquals('pages', $parts[0]->getExtents()[0]->getUnit());
-        self::assertEquals('99', $parts[0]->getExtents()[0]->getStart()->getValue());
-        self::assertEquals('100', $parts[0]->getExtents()[0]->getEnd()->getValue());
-        self::assertEquals(2, $parts[0]->getExtents()[0]->getTotal());
-    }
-
-    public function testGetNoPartsByQueryForBookDocument()
-    {
-        $parts = $this->bookReader->getParts('[@order="3"]');
-        self::assertEmpty($parts);
-
-        $firstPart = $this->bookReader->getFirstPart('[@order="3"]');
-        self::assertNull($firstPart);
-
-        $lastPart = $this->bookReader->getLastPart('[@order="3"]');
-        self::assertNull($lastPart);
-    }
-
-    public function testGetNoPartsForSerialDocument()
-    {
-        $parts = $this->serialReader->getParts();
-        self::assertEmpty($parts);
-    }
-
-    public function testGetPhysicalDescriptionsForBookDocument()
-    {
-        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions();
-        self::assertNotEmpty($physicalDescriptions);
-        self::assertEquals(1, count($physicalDescriptions));
-        self::assertNotEmpty($physicalDescriptions[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getForms());
-        self::assertEquals('marcform', $physicalDescriptions[0]->getForms()[0]->getAuthority());
-        self::assertEquals('print', $physicalDescriptions[0]->getForms()[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getExtents());
-        self::assertEquals('vii, 322 p. ; 23 cm.', $physicalDescriptions[0]->getExtents()[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getReformattingQualities());
-        self::assertEquals('replacement', $physicalDescriptions[0]->getReformattingQualities()[0]);
-        self::assertNotEmpty($physicalDescriptions[0]->getDigitalOrigins());
-        self::assertEquals('born digital', $physicalDescriptions[0]->getDigitalOrigins()[0]);
-        self::assertEmpty($physicalDescriptions[0]->getNotes());
-
-        $firstPhysicalDescription = $this->bookReader->getFirstPhysicalDescription();
-        self::assertEquals($physicalDescriptions[0], $firstPhysicalDescription);
-
-        $lastPhysicalDescription = $this->bookReader->getLastPhysicalDescription();
-        self::assertEquals($physicalDescriptions[0], $lastPhysicalDescription);
-    }
-
-    public function testGetPhysicalDescriptionsByQueryForBookDocument()
-    {
-        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="print"]');
-        self::assertNotEmpty($physicalDescriptions);
-        self::assertEquals(1, count($physicalDescriptions));
-        self::assertNotEmpty($physicalDescriptions[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getForms());
-        self::assertEquals('marcform', $physicalDescriptions[0]->getForms()[0]->getAuthority());
-        self::assertEquals('print', $physicalDescriptions[0]->getForms()[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getExtents());
-        self::assertEquals('vii, 322 p. ; 23 cm.', $physicalDescriptions[0]->getExtents()[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getReformattingQualities());
-        self::assertEquals('replacement', $physicalDescriptions[0]->getReformattingQualities()[0]);
-        self::assertNotEmpty($physicalDescriptions[0]->getDigitalOrigins());
-        self::assertEquals('born digital', $physicalDescriptions[0]->getDigitalOrigins()[0]);
-        self::assertEmpty($physicalDescriptions[0]->getNotes());
-    }
-
-    public function testGetNoPhysicalDescriptionsByQueryForBookDocument()
-    {
-        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="electronic"]');
-        self::assertEmpty($physicalDescriptions);
-
-        $firstPhysicalDescription = $this->bookReader->getFirstPhysicalDescription('[./mods:form[@authority="marcform"]="electronic"]');
-        self::assertNull($firstPhysicalDescription);
-
-        $lastPhysicalDescription = $this->bookReader->getLastPhysicalDescription('[./mods:form[@authority="marcform"]="electronic"]');
-        self::assertNull($lastPhysicalDescription);
-    }
-
-    public function testGetPhysicalDescriptionsForSerialDocument()
-    {
-        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions();
-        self::assertNotEmpty($physicalDescriptions);
-        self::assertEquals(1, count($physicalDescriptions));
-        self::assertNotEmpty($physicalDescriptions[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getForms());
-        self::assertEquals(2, count($physicalDescriptions[0]->getForms()));
-        self::assertEquals('gmd', $physicalDescriptions[0]->getForms()[1]->getAuthority());
-        self::assertEquals('electronic resource', $physicalDescriptions[0]->getForms()[1]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getInternetMediaTypes());
-        self::assertEquals('text/html', $physicalDescriptions[0]->getInternetMediaTypes()[0]->getValue());
-        self::assertEmpty($physicalDescriptions[0]->getExtents());
-        self::assertEmpty($physicalDescriptions[0]->getReformattingQualities());
-        self::assertEmpty($physicalDescriptions[0]->getDigitalOrigins());
-        self::assertEmpty($physicalDescriptions[0]->getNotes());
-    }
-
-    public function testGetPhysicalDescriptionsByQueryForSerialDocument()
-    {
-        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="electronic"]');
-        self::assertNotEmpty($physicalDescriptions);
-        self::assertEquals(1, count($physicalDescriptions));
-        self::assertNotEmpty($physicalDescriptions[0]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getForms());
-        self::assertEquals(2, count($physicalDescriptions[0]->getForms()));
-        self::assertEquals('gmd', $physicalDescriptions[0]->getForms()[1]->getAuthority());
-        self::assertEquals('electronic resource', $physicalDescriptions[0]->getForms()[1]->getValue());
-        self::assertNotEmpty($physicalDescriptions[0]->getInternetMediaTypes());
-        self::assertEquals('text/html', $physicalDescriptions[0]->getInternetMediaTypes()[0]->getValue());
-        self::assertEmpty($physicalDescriptions[0]->getExtents());
-        self::assertEmpty($physicalDescriptions[0]->getReformattingQualities());
-        self::assertEmpty($physicalDescriptions[0]->getDigitalOrigins());
-        self::assertEmpty($physicalDescriptions[0]->getNotes());
-    }
-
-    public function testGetNoPhysicalDescriptionsByQueryForSerialDocument()
-    {
-        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="print"]');
-        self::assertEmpty($physicalDescriptions);
-    }
-
-    public function testGetRecordInfosForBookDocument()
-    {
-        $recordInfos = $this->bookReader->getRecordInfos();
-        self::assertNotEmpty($recordInfos);
-        self::assertEquals(1, count($recordInfos));
-        self::assertNotEmpty($recordInfos[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
-        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
-        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
-        self::assertEquals('DLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
-        self::assertEquals('marc', $recordInfos[0]->getRecordCreationDates()[0]->getEncoding());
-        self::assertEquals('990730', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
-        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
-        self::assertEquals('20060801143536.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
-        self::assertEquals('DE-14', $recordInfos[0]->getRecordIdentifiers()[0]->getSource());
-        self::assertEquals('11761548', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordOrigins());
-        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
-
-        $firstRecordInfo = $this->bookReader->getFirstRecordInfo();
-        self::assertEquals($recordInfos[0], $firstRecordInfo);
-
-        $lastRecordInfo = $this->bookReader->getLastRecordInfo();
-        self::assertEquals($recordInfos[0], $lastRecordInfo);
-    }
-
-    public function testGetRecordInfosByQueryForBookDocument()
-    {
-        $recordInfos = $this->bookReader->getRecordInfos('[./mods:descriptionStandard="aacr"]');
-        self::assertNotEmpty($recordInfos);
-        self::assertEquals(1, count($recordInfos));
-        self::assertNotEmpty($recordInfos[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
-        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
-        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
-        self::assertEquals('DLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
-        self::assertEquals('marc', $recordInfos[0]->getRecordCreationDates()[0]->getEncoding());
-        self::assertEquals('990730', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
-        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
-        self::assertEquals('20060801143536.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
-        self::assertEquals('DE-14', $recordInfos[0]->getRecordIdentifiers()[0]->getSource());
-        self::assertEquals('11761548', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordOrigins());
-        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
-    }
-
-    public function testGetNoRecordInfosByQueryForBookDocument()
-    {
-        $recordInfos = $this->bookReader->getRecordInfos('[./mods:descriptionStandard="xyz"]');
-        self::assertEmpty($recordInfos);
-
-        $firstRecordInfo = $this->bookReader->getFirstRecordInfo('[./mods:descriptionStandard="xyz"]');
-        self::assertNull($firstRecordInfo);
-
-        $lastRecordInfo = $this->bookReader->getLastRecordInfo('[./mods:descriptionStandard="xyz"]');
-        self::assertNull($lastRecordInfo);
-    }
-
-    public function testGetRecordInfosForSerialDocument()
-    {
-        $recordInfos = $this->serialReader->getRecordInfos();
-        self::assertNotEmpty($recordInfos);
-        self::assertEquals(1, count($recordInfos));
-        self::assertNotEmpty($recordInfos[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
-        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
-        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
-        self::assertEquals('NLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
-
-        $this->expectException(IncorrectValueInAttributeException::class);
-        $recordInfos[0]->getRecordCreationDates()[0]->getEncoding();
-
-        self::assertEquals('021127', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
-        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
-        self::assertEquals('20080910160139.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
-        self::assertEquals('15446420', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
-        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordInfoNotes());
-        self::assertEquals(2, count($recordInfos[0]->getRecordInfoNotes()));
-        self::assertEquals('Some info', $recordInfos[0]->getRecordInfoNotes()[1]->getValue());
-
-        $languages = $recordInfos[0]->getLanguageOfCatalogings();
-        self::assertNotEmpty($languages);
-        self::assertNotNull($languages[0]->getLanguageTerm());
-        self::assertEquals('code', $languages[0]->getLanguageTerm()->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerm()->getAuthority());
-        self::assertEquals('eng', $languages[0]->getLanguageTerm()->getValue());
-        self::assertNotNull($languages[0]->getScriptTerm());
-        self::assertEquals('code', $languages[0]->getScriptTerm()->getType());
-        self::assertEquals('iso15924', $languages[0]->getScriptTerm()->getAuthority());
-        self::assertEquals('Latn', $languages[0]->getScriptTerm()->getValue());
-    }
-
-    public function testGetRecordInfosByQueryForSerialDocument()
-    {
-        $recordInfos = $this->serialReader->getRecordInfos('[./mods:descriptionStandard="aacr"]');
-        self::assertNotEmpty($recordInfos);
-        self::assertEquals(1, count($recordInfos));
-        self::assertNotEmpty($recordInfos[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
-        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
-        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
-        self::assertEquals('NLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
-
-        $this->expectException(IncorrectValueInAttributeException::class);
-        $recordInfos[0]->getRecordCreationDates()[0]->getEncoding();
-
-        self::assertEquals('021127', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
-        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
-        self::assertEquals('20080910160139.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
-        self::assertEquals('15446420', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
-        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
-        self::assertNotEmpty($recordInfos[0]->getRecordInfoNotes());
-        self::assertEquals(2, count($recordInfos[0]->getRecordInfoNotes()));
-        self::assertEquals('Some info', $recordInfos[0]->getRecordInfoNotes()[1]->getValue());
-
-        $languages = $recordInfos[0]->getLanguageOfCatalogings();
-        self::assertNotEmpty($languages);
-        self::assertNotNull($languages[0]->getLanguageTerm());
-        self::assertEquals('code', $languages[0]->getLanguageTerm()->getType());
-        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerm()->getAuthority());
-        self::assertEquals('eng', $languages[0]->getLanguageTerm()->getValue());
-        self::assertNotNull($languages[0]->getScriptTerm());
-        self::assertEquals('code', $languages[0]->getScriptTerm()->getType());
-        self::assertEquals('iso15924', $languages[0]->getScriptTerm()->getAuthority());
-        self::assertEquals('Latn', $languages[0]->getScriptTerm()->getValue());
-    }
-
-    public function testGetNoRecordInfosByQueryForSerialDocument()
-    {
-        $recordInfos = $this->serialReader->getRecordInfos('[./mods:descriptionStandard="xyz"]');
-        self::assertEmpty($recordInfos);
-    }
-
-    public function testGetNoRelatedItemsForBookDocument()
-    {
-        $relatedItems = $this->bookReader->getRelatedItems();
-        self::assertEmpty($relatedItems);
-
-        $firstRelatedItem = $this->bookReader->getFirstRelatedItem();
-        self::assertNull($firstRelatedItem);
-
-        $lastRelatedItem = $this->bookReader->getLastRelatedItem();
-        self::assertNull($lastRelatedItem);
-    }
-
-    public function testGetRelatedItemsForSerialDocument()
-    {
-        $relatedItems = $this->serialReader->getRelatedItems();
-        self::assertNotEmpty($relatedItems);
-        self::assertEquals(1, count($relatedItems));
-
-        $relatedItem = $relatedItems[0];
-        self::assertNotEmpty($relatedItem->getType());
-        self::assertEquals('preceding', $relatedItem->getType());
-        self::assertNotEmpty($relatedItem->getTitleInfos());
-        self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getTitleInfos()[0]->getTitle()->getValue());
-        self::assertNotEmpty($relatedItem->getOriginInfos());
-        //TODO: implement back compatibility for 'publisher' element
-        //self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getOriginInfos()[0]->getPublisher());
-        self::assertNotEmpty($relatedItem->getIdentifiers());
-        self::assertEquals(4, count($relatedItem->getIdentifiers()));
-        self::assertEquals('1525-321X', $relatedItem->getIdentifiers()[0]->getValue());
-
-        $localIdentifiers = $relatedItem->getIdentifiers('[@type="local"]');
-        self::assertNotEmpty($localIdentifiers);
-        self::assertEquals(3, count($localIdentifiers));
-        self::assertEquals('(OCoLC)41477508', $localIdentifiers[0]->getValue());
-
-        $firstRelatedItem = $this->serialReader->getFirstRelatedItem();
-        self::assertEquals($relatedItem, $firstRelatedItem);
-
-        $lastRelatedItem = $this->serialReader->getLastRelatedItem();
-        self::assertEquals($relatedItem, $lastRelatedItem);
-    }
-
-    public function testGetRelatedItemsByQueryForSerialDocument()
-    {
-        $relatedItems = $this->serialReader->getRelatedItems('[./mods:identifier="1525-321X"]');
-        self::assertNotEmpty($relatedItems);
-        self::assertEquals(1, count($relatedItems));
-
-        $relatedItem = $relatedItems[0];
-        self::assertNotEmpty($relatedItem->getType());
-        self::assertEquals('preceding', $relatedItem->getType());
-        self::assertNotEmpty($relatedItem->getTitleInfos());
-        self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getTitleInfos()[0]->getTitle()->getValue());
-        self::assertNotEmpty($relatedItem->getOriginInfos());
-        //TODO: implement back compatibility for 'publisher' element
-        //self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getOriginInfos()[0]->getPublisher());
-        self::assertNotEmpty($relatedItem->getIdentifiers());
-        self::assertEquals(4, count($relatedItem->getIdentifiers()));
-        self::assertEquals('1525-321X', $relatedItem->getIdentifiers()[0]->getValue());
-
-        $localIdentifiers = $relatedItem->getIdentifiers('[@type="local"]');
-        self::assertNotEmpty($localIdentifiers);
-        self::assertEquals(3, count($localIdentifiers));
-        self::assertEquals('(OCoLC)41477508', $localIdentifiers[0]->getValue());
-    }
-
-    public function testGetNoRelatedItemsByQueryForSerialDocument()
-    {
-        $relatedItems = $this->serialReader->getRelatedItems('[./mods:identifier="15-32"]');
-        self::assertEmpty($relatedItems);
-    }
-
-    public function testGetSubjectsForBookDocument()
-    {
-        $subjects = $this->bookReader->getSubjects();
-        self::assertNotEmpty($subjects);
-        self::assertEquals(8, count($subjects));
-        self::assertNotEmpty($subjects[0]->getValue());
-        $hierarchicalGeographics = $subjects[0]->getHierarchicalGeographics();
-        self::assertNotEmpty($hierarchicalGeographics);
-        self::assertNotEmpty($hierarchicalGeographics[0]->getCountries());
-        self::assertEquals(2, count($hierarchicalGeographics[0]->getCountries()));
-        self::assertEquals(1, $hierarchicalGeographics[0]->getCountries()[0]->getLevel());
-        self::assertEquals('United Kingdom', $hierarchicalGeographics[0]->getCountries()[0]->getValue());
-        self::assertNotEmpty($hierarchicalGeographics[0]->getRegions());
-        self::assertEquals('North West', $hierarchicalGeographics[0]->getRegions()[0]->getValue());
-        self::assertNotEmpty($hierarchicalGeographics[0]->getCounties());
-        self::assertEquals('Cumbria', $hierarchicalGeographics[0]->getCounties()[0]->getValue());
-        self::assertNotEmpty($hierarchicalGeographics[0]->getCities());
-        self::assertEquals('Providence', $hierarchicalGeographics[0]->getCities()[0]->getValue());
-
-        $citySections = $hierarchicalGeographics[0]->getCitySections();
-        self::assertNotEmpty($citySections);
-        self::assertEquals(2, count($citySections));
-        self::assertEquals('neighborhood', $citySections[0]->getType());
-        self::assertEquals(1, $citySections[0]->getLevel());
-        self::assertEquals('East Side', $citySections[0]->getValue());
-
-        $areas = $hierarchicalGeographics[0]->getAreas();
-        self::assertNotEmpty($areas);
-        self::assertEquals('national park', $areas[0]->getType());
-        self::assertEquals('Lake District', $areas[0]->getValue());
-
-        $firstSubject = $this->bookReader->getFirstSubject();
-        self::assertEquals($subjects[0], $firstSubject);
-
-        $lastSubject = $this->bookReader->getLastSubject();
-        self::assertEquals($subjects[7], $lastSubject);
-    }
-
-    public function testGetSubjectsByQueryForBookDocument()
-    {
-        $subjects = $this->bookReader->getSubjects('[./mods:topic="Mass media"]');
-        self::assertNotEmpty($subjects);
-        self::assertEquals(1, count($subjects));
-        self::assertNotEmpty($subjects[0]->getAuthority());
-        self::assertEquals('lcsh', $subjects[0]->getAuthority());
-        self::assertNotEmpty($subjects[0]->getValue());
-        self::assertNotEmpty($subjects[0]->getTopics());
-        self::assertEquals(2, count($subjects[0]->getTopics()));
-        self::assertEquals('Political aspects', $subjects[0]->getTopics()[1]->getValue());
-        self::assertNotEmpty($subjects[0]->getGeographics());
-        self::assertEquals(1, count($subjects[0]->getGeographics()));
-        self::assertEquals('United States', $subjects[0]->getGeographics()[0]->getValue());
-    }
-
-    public function testGetNoSubjectsByQueryForBookDocument()
-    {
-        $subjects = $this->bookReader->getSubjects('[./mods:topic="Unknown"]');
-        self::assertEmpty($subjects);
-
-        $firstSubject = $this->bookReader->getFirstSubject('[./mods:topic="Unknown"]');
-        self::assertNull($firstSubject);
-
-        $lastSubject = $this->bookReader->getLastSubject('[./mods:topic="Unknown"]');
-        self::assertNull($lastSubject);
-    }
-
-    public function testGetSubjectsForSerialDocument()
-    {
-        $subjects = $this->serialReader->getSubjects();
-        self::assertNotEmpty($subjects);
-        self::assertEquals(7, count($subjects));
-        self::assertNotEmpty($subjects[0]->getValue());
-        self::assertNotEmpty($subjects[0]->getCartographics());
-
-        // TODO: implement reading of cartographics
-        /*self::assertNotEmpty($subjects[0]->getCartographics()[0]->getCoordinates());
-        self::assertEquals('', $subjects[0]->getCartographics()[0]->getCoordinates()[0]->getValue());
-        self::assertNotEmpty($subjects[0]->getCartographics()[0]->getScale());
-        self::assertNotEmpty($subjects[0]->getCartographics()[0]->getProjection());*/
-    }
-
-    public function testGetSubjectsByQueryForSerialDocument()
-    {
-        $subjects = $this->serialReader->getSubjects('[./mods:genre="Directories"]');
-        self::assertNotEmpty($subjects);
-        self::assertEquals(1, count($subjects));
-        self::assertNotEmpty($subjects[0]->getValue());
-        self::assertNotEmpty($subjects[0]->getTopics());
-        self::assertEquals('Web sites', $subjects[0]->getTopics()[0]->getValue());
-        self::assertNotEmpty($subjects[0]->getGenres());
-        self::assertEquals('Directories', $subjects[0]->getGenres()[0]->getValue());
-    }
-
-    public function testGetNoSubjectsByQueryForSerialDocument()
-    {
-        $subjects = $this->serialReader->getSubjects('[./mods:topic="Unknown"]');
-        self::assertEmpty($subjects);
-    }
-
-    public function testGetTableOfContentsForBookDocument()
-    {
-        $tableOfContents = $this->bookReader->getTableOfContents();
-        self::assertNotEmpty($tableOfContents);
-        self::assertEquals(1, count($tableOfContents));
-        self::assertNotEmpty($tableOfContents[0]->getValue());
-        self::assertEquals('Bluegrass odyssey -- Hills of Tennessee -- Sassafrass -- Muddy river -- Take your shoes off Moses -- Let Smokey Mountain smoke get in your eyes -- Farewell party -- Faded love', $tableOfContents[0]->getValue());
-        self::assertNotEmpty($tableOfContents[0]->getDisplayLabel());
-        self::assertEquals('Chapters', $tableOfContents[0]->getDisplayLabel());
-
-        // TODO: implement reading of elements
-    }
-
-    public function testGetTableOfContentsByQueryForBookDocument()
-    {
-        $tableOfContents = $this->bookReader->getTableOfContents('[@displayLabel="Chapters"]');
-        self::assertNotEmpty($tableOfContents);
-        self::assertEquals(1, count($tableOfContents));
-        self::assertNotEmpty($tableOfContents[0]->getValue());
-        self::assertEquals('Bluegrass odyssey -- Hills of Tennessee -- Sassafrass -- Muddy river -- Take your shoes off Moses -- Let Smokey Mountain smoke get in your eyes -- Farewell party -- Faded love', $tableOfContents[0]->getValue());
-        self::assertNotEmpty($tableOfContents[0]->getDisplayLabel());
-        self::assertEquals('Chapters', $tableOfContents[0]->getDisplayLabel());
-
-        // TODO: implement reading of elements
-    }
-
-    public function testGetNoTableOfContentsByQueryForBookDocument()
-    {
-        $tableOfContents = $this->bookReader->getTableOfContents('[@displayLabel="Pages"]');
-        self::assertEmpty($tableOfContents);
-    }
-
-    public function testGetNoTableOfContentsForSerialDocument()
-    {
-        $tableOfContents = $this->serialReader->getTableOfContents();
-        self::assertEmpty($tableOfContents);
-    }
-
-    public function testGetTitleInfosForBookDocument()
-    {
-        $titleInfos = $this->bookReader->getTitleInfos();
-        self::assertNotEmpty($titleInfos);
-        self::assertEquals(2, count($titleInfos));
-        self::assertNotEmpty($titleInfos[0]->getValue());
-        self::assertEquals('Sound and fury', $titleInfos[0]->getTitle()->getValue());
-        self::assertEquals('the making of the punditocracy', $titleInfos[0]->getSubTitle()->getValue());
-    }
-
-    public function testGetTitleInfosByQueryForBookDocument()
-    {
-        $titleInfos = $this->bookReader->getTitleInfos('[@xml:lang="fr"]');
-        self::assertNotEmpty($titleInfos);
-        self::assertEquals(1, count($titleInfos));
-        self::assertNotEmpty($titleInfos[0]->getValue());
-        self::assertNotEmpty($titleInfos[0]->getType());
-        self::assertEquals('translated', $titleInfos[0]->getType());
-        self::assertNotEmpty($titleInfos[0]->getNonSort());
-        self::assertEquals('Le', $titleInfos[0]->getNonSort()->getValue());
-        self::assertNotEmpty($titleInfos[0]->getTitle());
-        self::assertEquals('bruit et la fureur', $titleInfos[0]->getTitle()->getValue());
-        self::assertNotEmpty($titleInfos[0]->getSubTitle());
-        self::assertEquals('la création de la punditocratie', $titleInfos[0]->getSubTitle()->getValue());
-    }
-
-    public function testGetTitleInfosForSerialDocument()
-    {
-        $titleInfos = $this->serialReader->getTitleInfos();
-        self::assertNotEmpty($titleInfos);
-        self::assertEquals(3, count($titleInfos));
-        self::assertNotEmpty($titleInfos[0]->getValue());
-        self::assertNotEmpty($titleInfos[0]->getTitle());
-        self::assertEquals('E-JASL', $titleInfos[0]->getTitle()->getValue());
-        self::assertNotEmpty($titleInfos[0]->getSubTitle());
-        self::assertEquals('the electronic journal of academic and special librarianship', $titleInfos[0]->getSubTitle()->getValue());
-    }
-
-    public function testGetTitleInfosByQueryForSerialDocument()
-    {
-        $titleInfos = $this->serialReader->getTitleInfos('[@type="abbreviated"]');
-        self::assertNotEmpty($titleInfos);
-        self::assertEquals(1, count($titleInfos));
-        self::assertNotEmpty($titleInfos[0]->getValue());
-        self::assertEquals('E-JASL', $titleInfos[0]->getTitle()->getValue());
-        self::assertNotEmpty($titleInfos[0]->getSubTitle());
-        self::assertEquals('(Athabasca)', $titleInfos[0]->getSubTitle()->getValue());
-    }
-
-    public function testGetNoTitleInfosByQueryForSerialDocument()
-    {
-        $titleInfos = $this->serialReader->getTitleInfos('[@type="uniform"]');
-        self::assertEmpty($titleInfos);
-    }
-
-    public function testGetTypeOfResourceForBookDocument()
-    {
-        $typeOfResource = $this->bookReader->getTypeOfResource();
-        self::assertNotNull($typeOfResource);
-        self::assertNotEmpty($typeOfResource->getDisplayLabel());
-        self::assertEquals('format', $typeOfResource->getDisplayLabel());
-        self::assertNotEmpty($typeOfResource->getValue());
-        self::assertEquals('text', $typeOfResource->getValue());
-    }
-
-    public function testGetTypeOfResourceByQueryForBookDocument()
-    {
-        $typeOfResource = $this->bookReader->getTypeOfResource('[@displayLabel="format"]');
-        self::assertNotNull($typeOfResource);
-        self::assertNotEmpty($typeOfResource->getDisplayLabel());
-        self::assertEquals('format', $typeOfResource->getDisplayLabel());
-        self::assertNotEmpty($typeOfResource->getValue());
-        self::assertEquals('text', $typeOfResource->getValue());
-    }
-
-    public function testGetNoTypeOfResourceByQueryForBookDocument()
-    {
-        $typeOfResource = $this->bookReader->getTypeOfResource('[@displayLabel="random"]');
-        self::assertNull($typeOfResource);
-    }
-
-    public function testGetTypeOfResourceForSerialDocument()
-    {
-        $typeOfResource = $this->serialReader->getTypeOfResource();
-        self::assertNotNull($typeOfResource);
-        self::assertEmpty($typeOfResource->getDisplayLabel());
-        self::assertNotEmpty($typeOfResource->getValue());
-        self::assertEquals('text', $typeOfResource->getValue());
-    }
-
-    public function testGetNoTypeOfResourceByQueryForSerialDocument()
-    {
-        $abstract = $this->serialReader->getAbstract('[@displayForm="format"]');
-        self::assertNull($abstract);
-    }
 }
diff --git a/tests/Mods/Reader/AbstractReaderTest.php b/tests/Mods/Reader/AbstractReaderTest.php
new file mode 100644
index 0000000..29eb202
--- /dev/null
+++ b/tests/Mods/Reader/AbstractReaderTest.php
@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Abstract element
+ */
+class AbstractReaderTest extends ModsReaderTest
+{
+
+    public function testGetAbstractForBookDocument()
+    {
+        $abstract = $this->bookReader->getAbstract();
+        self::assertNotNull($abstract);
+        self::assertNotEmpty($abstract->getDisplayLabel());
+        self::assertEquals('Content description', $abstract->getDisplayLabel());
+        self::assertNotEmpty($abstract->getValue());
+        self::assertEquals('Test description for document which contains display label.', $abstract->getValue());
+        self::assertTrue($abstract->isShareable());
+    }
+
+    public function testGetAbstractByQueryForBookDocument()
+    {
+        $abstract = $this->bookReader->getAbstract('[@displayLabel="Content description"]');
+        self::assertNotNull($abstract);
+        self::assertNotEmpty($abstract->getDisplayLabel());
+        self::assertEquals('Content description', $abstract->getDisplayLabel());
+        self::assertNotEmpty($abstract->getValue());
+        self::assertEquals('Test description for document which contains display label.', $abstract->getValue());
+        self::assertTrue($abstract->isShareable());
+    }
+
+    public function testGetNoAbstractByQueryForBookDocument()
+    {
+        $abstract = $this->bookReader->getAbstract('[@displayLabel="Random"]');
+        self::assertNull($abstract);
+    }
+
+    public function testGetAbstractForSerialDocument()
+    {
+        $abstract = $this->serialReader->getAbstract();
+        self::assertNotNull($abstract);
+        self::assertEmpty($abstract->getDisplayLabel());
+        self::assertNotEmpty($abstract->getValue());
+        self::assertEquals('Test description for non shareable document.', $abstract->getValue());
+        self::assertFalse($abstract->isShareable());
+    }
+
+    public function testGetAbstractByQueryForSerialDocument()
+    {
+        $abstract = $this->serialReader->getAbstract('[@shareable="no"]');
+        self::assertNotNull($abstract);
+        self::assertEmpty($abstract->getDisplayLabel());
+        self::assertNotEmpty($abstract->getValue());
+        self::assertEquals('Test description for non shareable document.', $abstract->getValue());
+        self::assertFalse($abstract->isShareable());
+    }
+
+    public function testGetNoAbstractByQueryForSerialDocument()
+    {
+        $abstract = $this->serialReader->getAbstract('[@shareable="yes"]');
+        self::assertNull($abstract);
+    }
+}
diff --git a/tests/Mods/Reader/AccessConditionReaderTest.php b/tests/Mods/Reader/AccessConditionReaderTest.php
new file mode 100644
index 0000000..7bc29bc
--- /dev/null
+++ b/tests/Mods/Reader/AccessConditionReaderTest.php
@@ -0,0 +1,137 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\AccessCondition;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading AccessCondition element
+ */
+class AccessConditionReaderTest extends ModsReaderTest
+{
+
+    public function testGetAccessConditionsForBookDocument()
+    {
+        $accessConditions = $this->bookReader->getAccessConditions();
+        self::assertNotEmpty($accessConditions);
+        self::assertEquals(1, count($accessConditions));
+        self::assertAccessConditionForBookDocument($accessConditions[0]);
+    }
+
+    public function testGetAccessConditionForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getAccessCondition(0);
+        self::assertAccessConditionForBookDocument($accessCondition);
+    }
+
+    public function testGetFirstAccessConditionForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getFirstAccessCondition();
+        self::assertAccessConditionForBookDocument($accessCondition);
+    }
+
+    public function testGetLastAccessConditionForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getLastAccessCondition();
+        self::assertAccessConditionForBookDocument($accessCondition);
+    }
+
+    public function testGetAccessConditionsByQueryForBookDocument()
+    {
+        $accessConditions = $this->bookReader->getAccessConditions('[@type="use and reproduction"]');
+        self::assertNotEmpty($accessConditions);
+        self::assertEquals(1, count($accessConditions));
+        self::assertAccessConditionForBookDocument($accessConditions[0]);
+    }
+
+    public function testGetFirstAccessConditionByQueryForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getFirstAccessCondition('[@type="use and reproduction"]');
+        self::assertAccessConditionForBookDocument($accessCondition);
+    }
+
+    public function testGetLastAccessConditionByQueryForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getLastAccessCondition('[@type="use and reproduction"]');
+        self::assertAccessConditionForBookDocument($accessCondition);
+    }
+
+    public function testGetNoAccessConditionsByQueryForBookDocument()
+    {
+        $accessConditions = $this->bookReader->getAccessConditions('[@type="restriction on access"]');
+        self::assertEmpty($accessConditions);
+    }
+
+    public function testGetNoAccessConditionByQueryForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getAccessCondition(1, '[@type="restriction on access"]');
+        self::assertNull($accessCondition);
+    }
+
+    public function testGetNoFirstAccessConditionsByQueryForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getFirstAccessCondition('[@type="restriction on access"]');
+        self::assertNull($accessCondition);
+    }
+
+    public function testGetNoLastAccessConditionsByQueryForBookDocument()
+    {
+        $accessCondition = $this->bookReader->getLastAccessCondition('[@type="restriction on access"]');
+        self::assertNull($accessCondition);
+    }
+
+    public function testGetAccessConditionsForSerialDocument()
+    {
+        $accessConditions = $this->serialReader->getAccessConditions();
+        self::assertNotEmpty($accessConditions);
+        self::assertEquals(1, count($accessConditions));
+        self::assertAccessConditionForSerialDocument($accessConditions[0]);
+    }
+
+    public function testGetAccessConditionsByQueryForSerialDocument()
+    {
+        $accessConditions = $this->serialReader->getAccessConditions('[@type="restriction on access"]');
+        self::assertNotEmpty($accessConditions);
+        self::assertEquals(1, count($accessConditions));
+        self::assertAccessConditionForSerialDocument($accessConditions[0]);
+    }
+
+    public function testGetNoAccessConditionsByQueryForSerialDocument()
+    {
+        $accessConditions = $this->serialReader->getAccessConditions('[@type="use and reproduction"]');
+        self::assertEmpty($accessConditions);
+    }
+
+    private static function assertAccessConditionForBookDocument(AccessCondition $accessCondition)
+    {
+        self::assertNotEmpty($accessCondition->getValue());
+        self::assertEquals('Use of this public-domain resource is unrestricted.', $accessCondition->getValue());
+        self::assertNotEmpty($accessCondition->getType());
+        self::assertEquals('use and reproduction', $accessCondition->getType());
+        self::assertEmpty($accessCondition->getDisplayLabel());
+        self::assertEmpty($accessCondition->getXlinkHref());
+    }
+
+    private static function assertAccessConditionForSerialDocument(AccessCondition $accessCondition)
+    {
+        self::assertNotEmpty($accessCondition->getValue());
+        self::assertEquals('Open Access', $accessCondition->getValue());
+        self::assertNotEmpty($accessCondition->getType());
+        self::assertEquals('restriction on access', $accessCondition->getType());
+        self::assertNotEmpty($accessCondition->getDisplayLabel());
+        self::assertEquals('Access Status', $accessCondition->getDisplayLabel());
+        // TODO: check out xlink
+        //self::assertEquals('http://purl.org/eprint/accessRights/OpenAccess', $accessCondition->getXlinkHref());
+    }
+}
diff --git a/tests/Mods/Reader/ClassificationReaderTest.php b/tests/Mods/Reader/ClassificationReaderTest.php
new file mode 100644
index 0000000..80e961a
--- /dev/null
+++ b/tests/Mods/Reader/ClassificationReaderTest.php
@@ -0,0 +1,138 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Classification;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Classification element
+ */
+class ClassificationReaderTest extends ModsReaderTest
+{
+
+    public function testGetClassificationsForBookDocument()
+    {
+        $classifications = $this->bookReader->getClassifications();
+        self::assertNotEmpty($classifications);
+        self::assertEquals(2, count($classifications));
+        self::assertFirstClassificationForBookDocument($classifications[0]);
+    }
+
+    public function testGetClassificationForBookDocument()
+    {
+        $classification = $this->bookReader->getClassification(0);
+        self::assertFirstClassificationForBookDocument($classification);
+    }
+
+    public function testGetFirstClassificationForBookDocument()
+    {
+        $classification = $this->bookReader->getFirstClassification();
+        self::assertFirstClassificationForBookDocument($classification);
+    }
+
+    public function testGetLastClassificationForBookDocument()
+    {
+        $classification = $this->bookReader->getLastClassification();
+        self::assertSecondClassificationForBookDocument($classification);
+    }
+
+    public function testGetClassificationsByQueryForBookDocument()
+    {
+        $classifications = $this->bookReader->getClassifications('[@authority="ddc"]');
+        self::assertNotEmpty($classifications);
+        self::assertEquals(1, count($classifications));
+        self::assertSecondClassificationForBookDocument($classifications[0]);
+    }
+
+    public function testGetNoClassificationsByQueryForBookDocument()
+    {
+        $classifications = $this->bookReader->getClassifications('[@generator="xyz"]');
+        self::assertEmpty($classifications);
+    }
+
+    public function testGetNoClassificationByQueryForBookDocument()
+    {
+        $classification = $this->bookReader->getClassification(1, '[@generator="xyz"]');
+        self::assertNull($classification);
+    }
+
+    public function testGetNoFirstClassificationByQueryForBookDocument()
+    {
+        $classification = $this->bookReader->getFirstClassification('[@generator="xyz"]');
+        self::assertNull($classification);
+
+        $lastClassification = $this->bookReader->getLastClassification('[@generator="xyz"]');
+        self::assertNull($lastClassification);
+    }
+
+    public function testGetNoLastClassificationByQueryForBookDocument()
+    {
+        $classification = $this->bookReader->getLastClassification('[@generator="xyz"]');
+        self::assertNull($classification);
+    }
+
+    public function testGetClassificationsForSerialDocument()
+    {
+        $classifications = $this->serialReader->getClassifications();
+        self::assertNotEmpty($classifications);
+        self::assertEquals(1, count($classifications));
+        self::assertClassificationForSerialDocument($classifications[0]);
+    }
+
+    public function testGetClassificationsByQueryForSerialDocument()
+    {
+        $classifications = $this->serialReader->getClassifications('[@authority="ddc"]');
+        self::assertNotEmpty($classifications);
+        self::assertEquals(1, count($classifications));
+        self::assertClassificationForSerialDocument($classifications[0]);
+    }
+
+    public function testGetNoClassificationsByQueryForSerialDocument()
+    {
+        $classifications = $this->serialReader->getClassifications('[@edition="22"]');
+        self::assertEmpty($classifications);
+    }
+
+    private static function assertFirstClassificationForBookDocument(Classification $classification)
+    {
+        self::assertNotEmpty($classification->getValue());
+        self::assertEquals('PN4888.P6 A48 1999', $classification->getValue());
+        self::assertNotEmpty($classification->getAuthority());
+        self::assertEquals('lcc', $classification->getAuthority());
+        self::assertEmpty($classification->getId());
+        self::assertEmpty($classification->getUsage());
+    }
+
+    private static function assertSecondClassificationForBookDocument(Classification $classification)
+    {
+        self::assertNotEmpty($classification->getValue());
+        self::assertEquals('071/.3', $classification->getValue());
+        self::assertNotEmpty($classification->getEdition());
+        self::assertEquals('21', $classification->getEdition());
+        self::assertEmpty($classification->getDisplayLabel());
+        self::assertEmpty($classification->getGenerator());
+    }
+
+    private static function assertClassificationForSerialDocument(Classification $classification)
+    {
+        self::assertNotEmpty($classification->getValue());
+        self::assertEquals('027.7/05', $classification->getValue());
+        self::assertNotEmpty($classification->getAuthority());
+        self::assertEquals('ddc', $classification->getAuthority());
+        self::assertNotEmpty($classification->getEdition());
+        self::assertEquals('21', $classification->getEdition());
+        self::assertEmpty($classification->getDisplayLabel());
+        self::assertEmpty($classification->getGenerator());
+    }
+}
diff --git a/tests/Mods/Reader/ExtensionReaderTest.php b/tests/Mods/Reader/ExtensionReaderTest.php
new file mode 100644
index 0000000..b5fd3d1
--- /dev/null
+++ b/tests/Mods/Reader/ExtensionReaderTest.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Extension element
+ */
+class ExtensionReaderTest extends ModsReaderTest
+{
+
+    public function testGetExtensionsForBookDocument()
+    {
+        $extensions = $this->bookReader->getExtensions();
+
+        $this->assertTrue(true, 'WIP');
+    }
+
+    public function testGetExtensionsForSerialDocument()
+    {
+        $extensions = $this->serialReader->getExtensions();
+
+        $this->assertTrue(true, 'WIP');
+    }
+}
diff --git a/tests/Mods/Reader/GenreReaderTest.php b/tests/Mods/Reader/GenreReaderTest.php
new file mode 100644
index 0000000..1848f9c
--- /dev/null
+++ b/tests/Mods/Reader/GenreReaderTest.php
@@ -0,0 +1,183 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Genre;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Genre element
+ */
+class GenreReaderTest extends ModsReaderTest
+{
+
+    public function testGetGenresForBookDocument()
+    {
+        $genres = $this->bookReader->getGenres();
+        self::assertNotEmpty($genres);
+        self::assertEquals(1, count($genres));
+        self::assertGenreForBookDocument($genres[0]);
+    }
+
+    public function testGetGenreForBookDocument()
+    {
+        $genre = $this->bookReader->getGenre(0);
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetFirstGenreForBookDocument()
+    {
+        $genre = $this->bookReader->getFirstGenre();
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetLastGenreForBookDocument()
+    {
+        $genre = $this->bookReader->getLastGenre();
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetGenresByQueryForBookDocument()
+    {
+        $genres = $this->bookReader->getGenres('[@authority="marcgt"]');
+        self::assertNotEmpty($genres);
+        self::assertEquals(1, count($genres));
+        self::assertGenreForBookDocument($genres[0]);
+    }
+
+    public function testGetGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getGenre(0, '[@authority="marcgt"]');
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetFirstGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getFirstGenre('[@authority="marcgt"]');
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetLastGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getLastGenre('[@authority="marcgt"]');
+        self::assertGenreForBookDocument($genre);
+    }
+
+    public function testGetNoGenresByQueryForBookDocument()
+    {
+        $genres = $this->bookReader->getGenres('[@authority="merc"]');
+        self::assertEmpty($genres);
+
+        $firstGenre = $this->bookReader->getFirstGenre('[@authority="merc"]');
+        self::assertNull($firstGenre);
+
+        $lastGenre = $this->bookReader->getLastGenre('[@authority="merc"]');
+        self::assertNull($lastGenre);
+    }
+
+    public function testGetNoGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getGenre(0, '[@authority="merc"]');
+        self::assertNull($genre);
+    }
+
+    public function testGetNoFirstGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getFirstGenre('[@authority="merc"]');
+        self::assertNull($genre);
+
+        $lastGenre = $this->bookReader->getLastGenre('[@authority="merc"]');
+        self::assertNull($lastGenre);
+    }
+
+    public function testGetNoLastGenreByQueryForBookDocument()
+    {
+        $genre = $this->bookReader->getLastGenre('[@authority="merc"]');
+        self::assertNull($genre);
+    }
+
+    public function testGetGenresForSerialDocument()
+    {
+        $genres = $this->serialReader->getGenres();
+        self::assertNotEmpty($genres);
+        self::assertEquals(2, count($genres));
+        self::assertFirstGenreForSerialDocument($genres[0]);
+
+        $firstGenre = $this->serialReader->getFirstGenre();
+        self::assertEquals($genres[0], $firstGenre);
+
+        $lastGenre = $this->serialReader->getLastGenre();
+        self::assertEquals($genres[1], $lastGenre);
+    }
+
+    public function testGetGenreForSerialDocument()
+    {
+        $genre = $this->serialReader->getGenre(0);
+        self::assertFirstGenreForSerialDocument($genre);
+    }
+
+    public function testGetFirstGenreForSerialDocument()
+    {
+        $genre = $this->serialReader->getFirstGenre();
+        self::assertFirstGenreForSerialDocument($genre);
+    }
+
+    public function testGetLastGenreForSerialDocument()
+    {
+        $genre = $this->serialReader->getLastGenre();
+        self::assertSecondGenreForSerialDocument($genre);
+    }
+
+    public function testGetGenresByQueryForSerialDocument()
+    {
+        $genres = $this->serialReader->getGenres('[@usage="primary"]');
+        self::assertNotEmpty($genres);
+        self::assertEquals(1, count($genres));
+        self::assertFirstGenreForSerialDocument($genres[0]);
+    }
+
+    public function testGetNoGenresByQueryForSerialDocument()
+    {
+        $genres = $this->serialReader->getGenres('[@type="xyz"]');
+        self::assertEmpty($genres);
+    }
+
+    private static function assertGenreForBookDocument(Genre $genre)
+    {
+        self::assertNotEmpty($genre->getValue());
+        self::assertEquals('bibliography', $genre->getValue());
+        self::assertNotEmpty($genre->getAuthority());
+        self::assertEquals('marcgt', $genre->getAuthority());
+        self::assertEmpty($genre->getLang());
+        self::assertEmpty($genre->getScript());
+    }
+
+    private static function assertFirstGenreForSerialDocument(Genre $genre)
+    {
+        self::assertNotEmpty($genre->getValue());
+        self::assertEquals('periodical', $genre->getValue());
+        self::assertNotEmpty($genre->getUsage());
+        self::assertEquals('primary', $genre->getUsage());
+        self::assertEmpty($genre->getDisplayLabel());
+        self::assertEmpty($genre->getTransliteration());
+    }
+
+    private static function assertSecondGenreForSerialDocument(Genre $genre)
+    {
+        self::assertNotEmpty($genre->getValue());
+        self::assertEquals('series', $genre->getValue());
+        self::assertEmpty($genre->getUsage());
+        self::assertEmpty($genre->getDisplayLabel());
+        self::assertEmpty($genre->getTransliteration());
+    }
+}
diff --git a/tests/Mods/Reader/IdentifierReaderTest.php b/tests/Mods/Reader/IdentifierReaderTest.php
new file mode 100644
index 0000000..010ab24
--- /dev/null
+++ b/tests/Mods/Reader/IdentifierReaderTest.php
@@ -0,0 +1,241 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Identifier;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Identifier element
+ */
+class IdentifierReaderTest extends ModsReaderTest
+{
+
+    public function testGetIdentifiersForBookDocument()
+    {
+        $identifiers = $this->bookReader->getIdentifiers();
+        self::assertNotEmpty($identifiers);
+        self::assertEquals(2, count($identifiers));
+        self::assertFirstIdentifierForBookDocument($identifiers[0]);
+    }
+
+    public function testGetIdentifierForBookDocument()
+    {
+        $identifier = $this->bookReader->getIdentifier(0);
+        self::assertFirstIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetFirstIdentifierForBookDocument()
+    {
+        $identifier = $this->bookReader->getFirstIdentifier();
+        self::assertFirstIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetLastIdentifierForBookDocument()
+    {
+        $identifier = $this->bookReader->getLastIdentifier();
+        self::assertSecondIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetIdentifiersByQueryForBookDocument()
+    {
+        $identifiers = $this->bookReader->getIdentifiers('[@type="lccn"]');
+        self::assertNotEmpty($identifiers);
+        self::assertEquals(1, count($identifiers));
+        self::assertSecondIdentifierForBookDocument($identifiers[0]);
+    }
+
+    public function testGetIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getIdentifier(0, '[@type="lccn"]');
+        self::assertSecondIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetFirstIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getFirstIdentifier('[@type="lccn"]');
+        self::assertSecondIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetLastIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getLastIdentifier('[@type="lccn"]');
+        self::assertSecondIdentifierForBookDocument($identifier);
+    }
+
+    public function testGetNoIdentifiersByQueryForBookDocument()
+    {
+        $identifiers = $this->bookReader->getIdentifiers('[@type="xyz"]');
+        self::assertEmpty($identifiers);
+    }
+
+    public function testGetNoIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getIdentifier(5, '[@type="lccn"]');
+        self::assertNull($identifier);
+    }
+
+    public function testGetNoFirstIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getFirstIdentifier('[@type="xyz"]');
+        self::assertNull($identifier);
+    }
+
+    public function testGetNoLastIdentifierByQueryForBookDocument()
+    {
+        $identifier = $this->bookReader->getLastIdentifier('[@type="xyz"]');
+        self::assertNull($identifier);
+    }
+
+    public function testGetIdentifiersForSerialDocument()
+    {
+        $identifiers = $this->serialReader->getIdentifiers();
+        self::assertNotEmpty($identifiers);
+        self::assertEquals(4, count($identifiers));
+        self::assertFirstIdentifierForSerialDocument($identifiers[0]);
+    }
+
+    public function testGetIdentifierForSerialDocument()
+    {
+        $identifier = $this->serialReader->getIdentifier(2);
+        self::assertThirdIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetFirstIdentifierForSerialDocument()
+    {
+        $identifier = $this->serialReader->getFirstIdentifier();
+        self::assertFirstIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetLastIdentifierForSerialDocument()
+    {
+        $identifier = $this->serialReader->getLastIdentifier();
+        self::assertFourthIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetIdentifiersByQueryForSerialDocument()
+    {
+        $identifiers = $this->serialReader->getIdentifiers('[@type="issn"]');
+        self::assertNotEmpty($identifiers);
+        self::assertEquals(2, count($identifiers));
+        self::assertSecondIdentifierForSerialDocument($identifiers[1]);
+    }
+
+    public function testGetIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getIdentifier(0, '[@type="issn"]');
+        self::assertFirstIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetFirstIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getFirstIdentifier('[@type="lccn"]');
+        self::assertThirdIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetLastIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getLastIdentifier('[@type="lccn"]');
+        self::assertThirdIdentifierForSerialDocument($identifier);
+    }
+
+    public function testGetNoIdentifiersByQueryForSerialDocument()
+    {
+        $identifiers = $this->serialReader->getIdentifiers('[@type="xyz"]');
+        self::assertEmpty($identifiers);
+    }
+
+    public function testGetNoIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getIdentifier(2, '[@type="xyz"]');
+        self::assertNull($identifier);
+    }
+
+    public function testGetNoFirstIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getFirstIdentifier('[@type="xyz"]');
+        self::assertNull($identifier);
+    }
+
+    public function testGetNoLastIdentifierByQueryForSerialDocument()
+    {
+        $identifier = $this->serialReader->getLastIdentifier('[@type="xyz"]');
+        self::assertNull($identifier);
+    }
+
+    private static function assertFirstIdentifierForBookDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('0801486394 (pbk. : acid-free, recycled paper)', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('isbn', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertFalse($identifier->isInvalid());
+    }
+
+    private static function assertSecondIdentifierForBookDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('99042030', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('lccn', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertFalse($identifier->isInvalid());
+    }
+
+    private static function assertFirstIdentifierForSerialDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('1704-8532', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('issn', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertFalse($identifier->isInvalid());
+    }
+
+    private static function assertSecondIdentifierForSerialDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('1525-321X', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('issn', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertTrue($identifier->isInvalid());
+    }
+
+    private static function assertThirdIdentifierForSerialDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('cn2002301668', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('lccn', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertFalse($identifier->isInvalid());
+    }
+
+    private static function assertFourthIdentifierForSerialDocument(Identifier $identifier)
+    {
+        self::assertNotEmpty($identifier->getValue());
+        self::assertEquals('ocm51090366', $identifier->getValue());
+        self::assertNotEmpty($identifier->getType());
+        self::assertEquals('oclc', $identifier->getType());
+        self::assertEmpty($identifier->getDisplayLabel());
+        self::assertEmpty($identifier->getLang());
+        self::assertFalse($identifier->isInvalid());
+    }
+}
diff --git a/tests/Mods/Reader/LanguageReaderTest.php b/tests/Mods/Reader/LanguageReaderTest.php
new file mode 100644
index 0000000..05ca84d
--- /dev/null
+++ b/tests/Mods/Reader/LanguageReaderTest.php
@@ -0,0 +1,175 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Language;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Language element
+ */
+class LanguageReaderTest extends ModsReaderTest
+{
+
+    public function testGetLanguagesForBookDocument()
+    {
+        $languages = $this->bookReader->getLanguages();
+        self::assertNotEmpty($languages);
+        self::assertEquals(2, count($languages));
+        self::assertFirstLanguageForBookDocument($languages[0]);
+    }
+
+    public function testGetLanguageForBookDocument()
+    {
+        $language = $this->bookReader->getLanguage(0);
+        self::assertFirstLanguageForBookDocument($language);
+    }
+
+    public function testGetFirstLanguageForBookDocument()
+    {
+        $language = $this->bookReader->getFirstLanguage();
+        self::assertFirstLanguageForBookDocument($language);
+    }
+
+    public function testGetLastLanguageForBookDocument()
+    {
+        $language = $this->bookReader->getLastLanguage();
+        self::assertSecondLanguageForBookDocument($language);
+    }
+
+    public function testGetLanguagesByQueryForBookDocument()
+    {
+        $languages = $this->bookReader->getLanguages('[@objectPart="summary"]');
+        self::assertNotEmpty($languages);
+        self::assertEquals(1, count($languages));
+        self::assertSecondLanguageForBookDocument($languages[0]);
+    }
+
+    public function testGetLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getLanguage(0, '[@objectPart="summary"]');
+        self::assertSecondLanguageForBookDocument($language);
+    }
+
+    public function testGetFirstLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getFirstLanguage('[@objectPart="summary"]');
+        self::assertSecondLanguageForBookDocument($language);
+    }
+
+    public function testGetLastLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getLastLanguage('[@objectPart="summary"]');
+        self::assertSecondLanguageForBookDocument($language);
+    }
+
+    public function testGetNoLanguagesByQueryForBookDocument()
+    {
+        $languages = $this->bookReader->getLanguages('[@objectPart="abstract"]');
+        self::assertEmpty($languages);
+    }
+
+    public function testGetNoLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getLanguage(0, '[@objectPart="abstract"]');
+        self::assertNull($language);
+    }
+
+    public function testGetNoFirstLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getFirstLanguage('[@objectPart="abstract"]');
+        self::assertNull($language);
+    }
+
+    public function testGetNoLastLanguageByQueryForBookDocument()
+    {
+        $language = $this->bookReader->getLastLanguage('[@objectPart="abstract"]');
+        self::assertNull($language);
+    }
+
+    public function testGetLanguagesForSerialDocument()
+    {
+        $languages = $this->serialReader->getLanguages();
+        self::assertNotEmpty($languages);
+        self::assertEquals(1, count($languages));
+        self::assertLanguageForSerialDocument($languages[0]);
+    }
+
+    public function testGetLanguagesByQueryForSerialDocument()
+    {
+        $languages = $this->serialReader->getLanguages('[./mods:languageTerm[@type="code"]]');
+        self::assertNotEmpty($languages);
+        self::assertEquals(1, count($languages));
+        self::assertLanguageForSerialDocument($languages[0]);
+    }
+
+    public function testGetNoLanguagesByQueryForSerialDocument()
+    {
+        $languages = $this->serialReader->getLanguages('[@objectPart="summary"]');
+        self::assertEmpty($languages);
+    }
+
+    private static function assertFirstLanguageForBookDocument(Language $language)
+    {
+        self::assertEmpty($language->getObjectPart());
+        self::assertNotEmpty($language->getValue());
+
+        $languageTerms = $language->getLanguageTerms();
+        self::assertNotEmpty($languageTerms);
+        self::assertNotEmpty($languageTerms[0]->getValue());
+        self::assertEquals('code', $languageTerms[0]->getType());
+        self::assertEquals('iso639-2b', $languageTerms[0]->getAuthority());
+        self::assertEquals('eng', $languageTerms[0]->getValue());
+
+        $scriptTerms = $language->getScriptTerms();
+        self::assertNotEmpty($scriptTerms);
+        self::assertEquals('code', $scriptTerms[0]->getType());
+        self::assertEquals('iso15924', $scriptTerms[0]->getAuthority());
+        self::assertEquals('Latn', $scriptTerms[0]->getValue());
+    }
+
+    private static function assertSecondLanguageForBookDocument(Language $language)
+    {
+        self::assertNotEmpty($language->getObjectPart());
+        self::assertEquals('summary', $language->getObjectPart());
+        self::assertNotEmpty($language->getValue());
+
+        $languageTerms = $language->getLanguageTerms();
+        self::assertNotEmpty($languageTerms);
+        self::assertNotEmpty($languageTerms[0]->getValue());
+        self::assertEquals('code', $languageTerms[0]->getType());
+        self::assertEquals('iso639-2b', $languageTerms[0]->getAuthority());
+        self::assertEquals('spa', $languageTerms[0]->getValue());
+
+        $scriptTerms = $language->getScriptTerms();
+        self::assertNotEmpty($language->getScriptTerms());
+        self::assertEquals('code', $scriptTerms[0]->getType());
+        self::assertEquals('iso15924', $scriptTerms[0]->getAuthority());
+        self::assertEquals('Latn', $scriptTerms[0]->getValue());
+    }
+
+    private static function assertLanguageForSerialDocument(Language $language)
+    {
+        self::assertEmpty($language->getObjectPart());
+        self::assertNotEmpty($language->getValue());
+
+        $languageTerms = $language->getLanguageTerms();
+        self::assertNotEmpty($languageTerms);
+        self::assertNotEmpty($languageTerms[0]->getValue());
+        self::assertEquals('code', $languageTerms[0]->getType());
+        self::assertEquals('iso639-2b', $languageTerms[0]->getAuthority());
+        self::assertEquals('eng', $languageTerms[0]->getValue());
+
+        self::assertEmpty($language->getScriptTerms());
+    }
+}
diff --git a/tests/Mods/Reader/LocationReaderTest.php b/tests/Mods/Reader/LocationReaderTest.php
new file mode 100644
index 0000000..1971002
--- /dev/null
+++ b/tests/Mods/Reader/LocationReaderTest.php
@@ -0,0 +1,169 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Location;
+use Slub\Mods\Exception\IncorrectValueInAttributeException;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Location element
+ */
+class LocationReaderTest extends ModsReaderTest
+{
+
+    public function testGetLocationsForBookDocument()
+    {
+        $locations = $this->bookReader->getLocations();
+        self::assertNotEmpty($locations);
+        self::assertEquals(2, count($locations));
+        self::assertFirstLocationForBookDocument($locations[0]);
+    }
+
+    public function testGetLocationForBookDocument()
+    {
+        $location = $this->bookReader->getLocation(1);
+        self::assertSecondLocationForBookDocument($location);
+    }
+
+    public function testGetFirstLocationForBookDocument()
+    {
+        $location = $this->bookReader->getFirstLocation();
+        self::assertFirstLocationForBookDocument($location);
+    }
+
+    public function testGetLastLocationForBookDocument()
+    {
+        $location = $this->bookReader->getLastLocation();
+        self::assertSecondLocationForBookDocument($location);
+    }
+
+    public function testGetLocationsByQueryForBookDocument()
+    {
+        $locations = $this->bookReader->getLocations('[@displayLabel="links"]');
+        self::assertNotEmpty($locations);
+        self::assertEquals(1, count($locations));
+        self::assertSecondLocationForBookDocument($locations[0]);
+
+        $this->expectException(IncorrectValueInAttributeException::class);
+        $locations[0]->getUrls()[3]->getAccess();
+    }
+
+    public function testGetLocationByQueryForBookDocument()
+    {
+        $location = $this->bookReader->getLocation(0, '[@displayLabel="links"]');
+        self::assertSecondLocationForBookDocument($location);
+    }
+
+    public function testGetFirstLocationByQueryForBookDocument()
+    {
+        $location = $this->bookReader->getFirstLocation('[@displayLabel="links"]');
+        self::assertSecondLocationForBookDocument($location);
+    }
+
+    public function testGetLastLocationForByQueryBookDocument()
+    {
+        $location = $this->bookReader->getLastLocation('[@displayLabel="links"]');
+        self::assertSecondLocationForBookDocument($location);
+    }
+
+    public function testGetNoLocationsByQueryForBookDocument()
+    {
+        $locations = $this->bookReader->getLocations('[@displayLabel="random"]');
+        self::assertEmpty($locations);
+    }
+
+    public function testGetNoLocationByQueryForBookDocument()
+    {
+        $location = $this->bookReader->getLocation(6, '[@displayLabel="links"]');
+        self::assertNull($location);
+    }
+
+    public function testGetNoFirstLocationByQueryForBookDocument()
+    {
+        $location = $this->bookReader->getFirstLocation('[@displayLabel="random"]');
+        self::assertNull($location);
+    }
+
+    public function testGetNoLastLocationByQueryForBookDocument()
+    {
+        $location = $this->bookReader->getLastLocation('[@displayLabel="random"]');
+        self::assertNull($location);
+    }
+
+    public function testGetLocationsForSerialDocument()
+    {
+        $locations = $this->serialReader->getLocations();
+        self::assertNotEmpty($locations);
+        self::assertEquals(2, count($locations));
+        self::assertLocationForSerialDocument($locations[0]);
+    }
+
+    public function testGetLocationsByQueryForSerialDocument()
+    {
+        $locations = $this->serialReader->getLocations('[./mods:url[@usage="primaryDisplay"]]');
+        self::assertNotEmpty($locations);
+        self::assertEquals(1, count($locations));
+        self::assertLocationForSerialDocument($locations[0]);
+    }
+
+    public function testNoGetLocationsByQueryForSerialDocument()
+    {
+        $locations = $this->serialReader->getLocations('[@usage="rad"]');
+        self::assertEmpty($locations);
+    }
+
+    private static function assertFirstLocationForBookDocument(Location $location)
+    {
+        self::assertNotEmpty($location->getValue());
+
+        $physicalLocations = $location->getPhysicalLocations();
+        self::assertNotEmpty($physicalLocations);
+        self::assertEquals('marcorg', $physicalLocations[0]->getAuthority());
+        self::assertEquals('MnRM', $physicalLocations[0]->getValue());
+
+        $holdingSimple = $location->getHoldingSimple();
+        self::assertNotNull($holdingSimple);
+
+        $copyInformation = $holdingSimple->getCopyInformation();
+        self::assertNotEmpty($copyInformation);
+        self::assertNotEmpty($copyInformation[0]->getSubLocations());
+        self::assertEquals('Reading room', $copyInformation[0]->getSubLocations()[0]->getValue());
+        self::assertNotEmpty($copyInformation[0]->getShelfLocators());
+        self::assertEquals('QH511.A1J68', $copyInformation[0]->getShelfLocators()[0]->getValue());
+        self::assertEquals('1', $copyInformation[0]->getEnumerationAndChronologies()[0]->getUnitType());
+        self::assertEquals('v.1-v.2 1999-2002', $copyInformation[0]->getEnumerationAndChronologies()[0]->getValue());
+    }
+
+    private static function assertSecondLocationForBookDocument(Location $location)
+    {
+        self::assertNotEmpty($location->getValue());
+
+        $urls = $location->getUrls();
+        self::assertNotEmpty($urls);
+        self::assertEquals(4, count($urls));
+        self::assertEquals('2024-01-27', $urls[0]->getDateLastAccessed());
+        self::assertEquals('http://www.slub-dresden.de/some-url', $urls[0]->getValue());
+        self::assertEquals('preview', $urls[1]->getAccess());
+        self::assertEquals('http://www.slub-dresden.de/some-url/SLO-0000', $urls[1]->getValue());
+    }
+
+    private static function assertLocationForSerialDocument(Location $location)
+    {
+        $urls = $location->getUrls();
+        self::assertNotEmpty($urls);
+        self::assertEquals('electronic resource', $urls[0]->getDisplayLabel());
+        self::assertEquals('primaryDisplay', $urls[0]->getUsage());
+        self::assertEquals('http://bibpurl.oclc.org/web/7085', $urls[0]->getValue());
+    }
+}
diff --git a/tests/Mods/Reader/NameReaderTest.php b/tests/Mods/Reader/NameReaderTest.php
new file mode 100644
index 0000000..02f7d4b
--- /dev/null
+++ b/tests/Mods/Reader/NameReaderTest.php
@@ -0,0 +1,183 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Name;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Name element
+ */
+class NameReaderTest extends ModsReaderTest
+{
+
+    public function testGetNamesForBookDocument()
+    {
+        $names = $this->bookReader->getNames();
+        self::assertNotEmpty($names);
+        self::assertEquals(2, count($names));
+        self::assertFirstNameForBookDocument($names[0]);
+
+        $firstName = $this->bookReader->getFirstName();
+        self::assertEquals($names[0], $firstName);
+
+        $lastName = $this->bookReader->getLastName();
+        self::assertEquals($names[1], $lastName);
+    }
+
+    public function testGetNameForBookDocument()
+    {
+        $name = $this->bookReader->getName(1);
+        self::assertSecondNameForBookDocument($name);
+
+    }
+
+    public function testGetFirstNameForBookDocument()
+    {
+        $name = $this->bookReader->getFirstName();
+        self::assertFirstNameForBookDocument($name);
+    }
+
+    public function testGetLastNameForBookDocument()
+    {
+        $name = $this->bookReader->getLastName();
+        self::assertSecondNameForBookDocument($name);
+    }
+
+    public function testGetNamesByQueryForBookDocument()
+    {
+        $names = $this->bookReader->getNames('[@type="personal" and not(@usage="primary")]');
+        self::assertNotEmpty($names);
+        self::assertEquals(1, count($names));
+        self::assertSecondNameForBookDocument($names[0]);
+    }
+
+    public function testGetNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getName(0, '[@type="personal" and not(@usage="primary")]');
+        self::assertSecondNameForBookDocument($name);
+    }
+
+    public function testGetFirstNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getFirstName('[@type="personal" and not(@usage="primary")]');
+        self::assertSecondNameForBookDocument($name);
+    }
+
+    public function testGetLastNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getLastName('[@type="personal" and not(@usage="primary")]');
+        self::assertSecondNameForBookDocument($name);
+    }
+
+    public function testGetNoNamesByQueryForBookDocument()
+    {
+        $names = $this->bookReader->getNames('[@type="corporate"]');
+        self::assertEmpty($names);
+    }
+
+    public function testGetNoNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getName(3, '[@type="corporate"]');
+        self::assertNull($name);
+    }
+
+    public function testGetNoFirstNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getFirstName('[@type="corporate"]');
+        self::assertNull($name);
+    }
+
+    public function testGetNoLastNameByQueryForBookDocument()
+    {
+        $name = $this->bookReader->getLastName('[@type="corporate"]');
+        self::assertNull($name);
+    }
+
+    public function testGetNamesForSerialDocument()
+    {
+        $names = $this->serialReader->getNames();
+        self::assertNotEmpty($names);
+        self::assertEquals(1, count($names));
+        self::assertNameForSerialDocument($names[0]);
+    }
+
+    public function testGetNamesByQueryForSerialDocument()
+    {
+        $names = $this->serialReader->getNames('[@type="corporate"]');
+        self::assertNotEmpty($names);
+        self::assertEquals(1, count($names));
+        self::assertNameForSerialDocument($names[0]);
+    }
+
+    public function testGetNoNamesByQueryForSerialDocument()
+    {
+        $names = $this->serialReader->getNames('[@type="personal"]');
+        self::assertEmpty($names);
+    }
+
+    private static function assertFirstNameForBookDocument(Name $name)
+    {
+        self::assertNotEmpty($name->getType());
+        self::assertEquals('personal', $name->getType());
+        self::assertNotEmpty($name->getUsage());
+        self::assertEquals('primary', $name->getUsage());
+        self::assertNotEmpty($name->getValue());
+
+        $nameParts = $name->getNameParts();
+        self::assertNotEmpty($nameParts);
+        self::assertEquals('Alterman, Eric.', $nameParts[0]->getValue());
+
+        $roles = $name->getRoles();
+        self::assertNotEmpty($roles);
+
+        $roleTerms = $roles[0]->getRoleTerms();
+        self::assertNotEmpty($roleTerms);
+        self::assertEquals('text', $roleTerms[0]->getType());
+        self::assertEquals('marcrelator', $roleTerms[0]->getAuthority());
+        self::assertEquals('creator', $roleTerms[0]->getValue());
+    }
+
+    private static function assertSecondNameForBookDocument(Name $name)
+    {
+        self::assertNotEmpty($name->getType());
+        self::assertEquals('personal', $name->getType());
+        self::assertEmpty($name->getUsage());
+        self::assertNotEmpty($name->getValue());
+
+        $nameParts = $name->getNameParts();
+        self::assertNotEmpty($name->getNameParts());
+        self::assertEquals(2, count($nameParts));
+        self::assertEquals('given', $nameParts[0]->getType());
+        self::assertEquals('Aron', $nameParts[0]->getValue());
+
+        $roles = $name->getRoles();
+        self::assertNotEmpty($roles);
+
+        $roleTerms = $roles[0]->getRoleTerms();
+        self::assertNotEmpty($roleTerms);
+        self::assertEquals('text', $roleTerms[0]->getType());
+        self::assertEquals('marcrelator', $roleTerms[0]->getAuthority());
+        self::assertEquals('author', $roleTerms[0]->getValue());
+    }
+
+    private static function assertNameForSerialDocument(Name $name)
+    {
+        self::assertNotEmpty($name->getValue());
+
+        $nameParts = $name->getNameParts();
+        self::assertNotEmpty($name->getNameParts());
+        self::assertEquals(1, count($nameParts));
+        self::assertEquals('International Consortium for the Advancement of Academic Publication.', $nameParts[0]->getValue());
+    }
+}
diff --git a/tests/Mods/Reader/NoteReaderTest.php b/tests/Mods/Reader/NoteReaderTest.php
new file mode 100644
index 0000000..9210b95
--- /dev/null
+++ b/tests/Mods/Reader/NoteReaderTest.php
@@ -0,0 +1,178 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Note;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Note element
+ */
+class NoteReaderTest extends ModsReaderTest
+{
+
+    public function testGetNotesForBookDocument()
+    {
+        $notes = $this->bookReader->getNotes();
+        self::assertNotEmpty($notes);
+        self::assertEquals(2, count($notes));
+        self::assertFirstNoteForBookDocument($notes[0]);
+    }
+
+    public function testGetNoteForBookDocument()
+    {
+        $note = $this->bookReader->getNote(1);
+        self::assertSecondNoteForBookDocument($note);
+    }
+
+    public function testGetFirstNoteForBookDocument()
+    {
+        $note = $this->bookReader->getFirstNote();
+        self::assertFirstNoteForBookDocument($note);
+    }
+
+    public function testGetLastNoteForBookDocument()
+    {
+        $note = $this->bookReader->getLastNote();
+        self::assertSecondNoteForBookDocument($note);
+    }
+
+    public function testGetNotesByQueryForBookDocument()
+    {
+        $notes = $this->bookReader->getNotes('[@type="bibliography"]');
+        self::assertNotEmpty($notes);
+        self::assertEquals(1, count($notes));
+        self::assertSecondNoteForBookDocument($notes[0]);
+    }
+
+    public function testGetNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getNote(0, '[@type="bibliography"]');
+        self::assertFirstNoteForBookDocument($note);
+    }
+
+    public function testGetFirstNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getFirstNote('[@type="bibliography"]');
+        self::assertFirstNoteForBookDocument($note);
+    }
+
+    public function testGetLastNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getLastNote('[@type="bibliography"]');
+        self::assertFirstNoteForBookDocument($note);
+    }
+
+    public function testGetNoNotesByQueryForBookDocument()
+    {
+        $notes = $this->bookReader->getNotes('[@type="xyz"]');
+        self::assertEmpty($notes);
+    }
+
+    public function testGetNoNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getNote(0, '[@type="xyz"]');
+        self::assertNull($note);
+    }
+
+    public function testGetNoFirstNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getFirstNote('[@type="xyz"]');
+        self::assertNull($note);
+    }
+
+    public function testGetNoLastNoteByQueryForBookDocument()
+    {
+        $note = $this->bookReader->getLastNote('[@type="xyz"]');
+        self::assertNull($note);
+    }
+
+    public function testGetNotesForSerialDocument()
+    {
+        $notes = $this->serialReader->getNotes();
+        self::assertNotEmpty($notes);
+        self::assertEquals(6, count($notes));
+        self::assertFirstNoteForBookDocument($notes[0]);
+    }
+
+    public function testGetNoteForSerialDocument()
+    {
+        $note = $this->serialReader->getNote(5);
+        self::assertSixthNoteForSerialDocument($note);
+    }
+
+    public function testGetFirstNoteForSerialDocument()
+    {
+        $note = $this->serialReader->getFirstNote();
+        self::assertFirstNoteForSerialDocument($note);
+    }
+
+    public function testGetLastNoteForSerialDocument()
+    {
+        $note = $this->serialReader->getLastNote();
+        self::assertSixthNoteForSerialDocument($note);
+    }
+
+    public function testGetNotesByQueryForSerialDocument()
+    {
+        $notes = $this->serialReader->getNotes('[@type="system details"]');
+        self::assertNotEmpty($notes);
+        self::assertEquals(1, count($notes));
+        self::assertFifthNoteForSerialDocument($notes[0]);
+    }
+
+    public function testGetNoNotesByQueryForSerialDocument()
+    {
+        $notes = $this->serialReader->getNotes('[@type="xyz"]');
+        self::assertEmpty($notes);
+    }
+
+    private static function assertFirstNoteForBookDocument(Note $note)
+    {
+        self::assertNotEmpty($note->getValue());
+        self::assertEquals('Eric Alterman.', $note->getValue());
+        self::assertNotEmpty($note->getType());
+        self::assertEquals('statement of responsibility', $note->getType());
+    }
+
+    private static function assertSecondNoteForBookDocument(Note $note)
+    {
+        self::assertNotEmpty($note->getValue());
+        self::assertEquals('Includes bibliographical references (p. 291-312) and index.', $note->getValue());
+        self::assertNotEmpty($note->getType());
+        self::assertEquals('bibliography', $note->getType());
+    }
+
+    private static function assertFirstNoteForSerialDocument(Note $note)
+    {
+        self::assertNotEmpty($note->getValue());
+        self::assertEquals('V. 3, no. 1/2 (winter 2002)-', $note->getValue());
+        self::assertNotEmpty($note->getType());
+        self::assertEquals('date/sequential designation', $note->getType());
+    }
+
+    private static function assertFifthNoteForSerialDocument(Note $note)
+    {
+        self::assertNotEmpty($note->getValue());
+        self::assertEquals('Mode of access: World Wide Web.', $note->getValue());
+        self::assertNotEmpty($note->getType());
+        self::assertEquals('system details', $note->getType());
+    }
+
+    private static function assertSixthNoteForSerialDocument(Note $note)
+    {
+        self::assertNotEmpty($note->getValue());
+        self::assertEquals('Electronic serial in HTML format.', $note->getValue());
+        self::assertEmpty($note->getType());
+    }
+}
diff --git a/tests/Mods/Reader/OriginInfoReaderTest.php b/tests/Mods/Reader/OriginInfoReaderTest.php
new file mode 100644
index 0000000..bdfc313
--- /dev/null
+++ b/tests/Mods/Reader/OriginInfoReaderTest.php
@@ -0,0 +1,198 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\OriginInfo;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading OriginInfo element
+ */
+class OriginInfoReaderTest extends ModsReaderTest
+{
+
+    public function testGetOriginInfosForBookDocument()
+    {
+        $originInfos = $this->bookReader->getOriginInfos();
+        self::assertNotEmpty($originInfos);
+        self::assertEquals(2, count($originInfos));
+        self::assertFirstOriginInfoForBookDocument($originInfos[0]);
+    }
+
+    public function testGetOriginInfoForBookDocument()
+    {
+        $originInfo = $this->bookReader->getOriginInfo(1);
+        self::assertSecondOriginInfoForBookDocument($originInfo);
+    }
+
+    public function testGetFirstOriginInfoForBookDocument()
+    {
+        $originInfo = $this->bookReader->getFirstOriginInfo();
+        self::assertFirstOriginInfoForBookDocument($originInfo);
+    }
+
+    public function testGetLastOriginInfoForBookDocument()
+    {
+        $originInfo = $this->bookReader->getLastOriginInfo();
+        self::assertSecondOriginInfoForBookDocument($originInfo);
+    }
+
+    public function testGetOriginInfosByQueryForBookDocument()
+    {
+        $originInfos = $this->bookReader->getOriginInfos('[@eventType="redaction"]');
+        self::assertNotEmpty($originInfos);
+        self::assertEquals(1, count($originInfos));
+        self::assertSecondOriginInfoForBookDocument($originInfos[0]);
+    }
+
+    public function testGetNoOriginInfosByQueryForBookDocument()
+    {
+        $originInfos = $this->bookReader->getOriginInfos('[@eventType="xyz"]');
+        self::assertEmpty($originInfos);
+
+        $firstOriginInfo = $this->bookReader->getFirstOriginInfo('[@eventType="xyz"]');
+        self::assertNull($firstOriginInfo);
+
+        $lastOriginInfo = $this->bookReader->getLastOriginInfo('[@eventType="xyz"]');
+        self::assertNull($lastOriginInfo);
+    }
+
+    public function testGetNoOriginInfoByQueryForBookDocument()
+    {
+        $originInfo = $this->bookReader->getOriginInfo(4, '[@eventType="xyz"]');
+        self::assertNull($originInfo);
+    }
+
+    public function testGetNoFirstOriginInfoByQueryForBookDocument()
+    {
+        $originInfo = $this->bookReader->getFirstOriginInfo('[@eventType="xyz"]');
+        self::assertNull($originInfo);
+    }
+
+    public function testGetNoLastOriginInfoByQueryForBookDocument()
+    {
+        $originInfo = $this->bookReader->getLastOriginInfo('[@eventType="xyz"]');
+        self::assertNull($originInfo);
+    }
+
+    public function testGetOriginInfosForSerialDocument()
+    {
+        $originInfos = $this->serialReader->getOriginInfos();
+        self::assertNotEmpty($originInfos);
+        self::assertEquals(1, count($originInfos));
+        self::assertOriginInfoForSerialDocument($originInfos[0]);
+    }
+
+    public function testGetOriginInfosByQueryForSerialDocument()
+    {
+        $originInfos = $this->serialReader->getOriginInfos('[@eventType="publication"]');
+        self::assertNotEmpty($originInfos);
+        self::assertEquals(1, count($originInfos));
+        self::assertOriginInfoForSerialDocument($originInfos[0]);
+    }
+
+    public function testGetNoOriginInfosByQueryForSerialDocument()
+    {
+        $originInfos = $this->serialReader->getOriginInfos('[@eventType="xyz"]');
+        self::assertEmpty($originInfos);
+    }
+
+    private static function assertFirstOriginInfoForBookDocument(OriginInfo $originInfo)
+    {
+        self::assertNotEmpty($originInfo->getValue());
+        self::assertNotEmpty($originInfo->getEventType());
+        self::assertEquals('publication', $originInfo->getEventType());
+
+        $places = $originInfo->getPlaces();
+        self::assertNotEmpty($places);
+        self::assertEquals(2, count($places));
+
+        $placeTerms = $places[0]->getPlaceTerms();
+        self::assertNotEmpty($placeTerms);
+        self::assertEquals('marccountry', $placeTerms[0]->getAuthority());
+        self::assertEquals('code', $placeTerms[0]->getType());
+        self::assertEquals('nyu', $placeTerms[0]->getValue());
+
+        $issuedDates = $originInfo->getIssuedDates();
+        self::assertNotEmpty($issuedDates);
+        self::assertEquals(2, count($issuedDates));
+        self::assertEquals('marc', $issuedDates[0]->getEncoding());
+        self::assertEquals('2000', $issuedDates[0]->getValue());
+
+        $issuances = $originInfo->getIssuances();
+        self::assertNotEmpty($issuances);
+        self::assertEquals('monographic', $issuances[0]->getValue());
+    }
+
+    private static function assertSecondOriginInfoForBookDocument(OriginInfo $originInfo)
+    {
+        self::assertNotEmpty($originInfo->getValue());
+        self::assertNotEmpty($originInfo->getEventType());
+        self::assertEquals('redaction', $originInfo->getEventType());
+
+        $places = $originInfo->getPlaces();
+        self::assertNotEmpty($places);
+        self::assertEquals(2, count($places));
+
+        $placeTerms = $places[1]->getPlaceTerms();
+        self::assertNotEmpty($placeTerms);
+        self::assertEquals('text', $placeTerms[0]->getType());
+        self::assertEquals('Ithaca, N.Y', $placeTerms[0]->getValue());
+
+        $issuedDates = $originInfo->getIssuedDates();
+        self::assertNotEmpty($issuedDates);
+        self::assertEquals(2, count($issuedDates));
+        self::assertEquals('marc', $issuedDates[0]->getEncoding());
+        self::assertEquals('1999', $issuedDates[0]->getValue());
+
+        self::assertEmpty($originInfo->getIssuances());
+    }
+
+    private static function assertOriginInfoForSerialDocument(OriginInfo $originInfo)
+    {
+        self::assertNotEmpty($originInfo->getValue());
+        self::assertNotEmpty($originInfo->getEventType());
+        self::assertEquals('publication', $originInfo->getEventType());
+
+        $places = $originInfo->getPlaces();
+        self::assertNotEmpty($places);
+        self::assertEquals(2, count($places));
+
+        $placeTerms = $places[0]->getPlaceTerms();
+        self::assertNotEmpty($placeTerms);
+        self::assertEquals('marccountry', $placeTerms[0]->getAuthority());
+        self::assertEquals('code', $placeTerms[0]->getType());
+        self::assertEquals('abc', $placeTerms[0]->getValue());
+
+        $issuedDates = $originInfo->getIssuedDates();
+        self::assertNotEmpty($issuedDates);
+        self::assertEquals(3, count($issuedDates));
+        self::assertEquals('marc', $issuedDates[0]->getEncoding());
+        self::assertEquals('start', $issuedDates[0]->getPoint());
+        self::assertEquals('2002', $issuedDates[0]->getValue());
+
+        $issuances = $originInfo->getIssuances();
+        self::assertNotEmpty($issuances);
+        self::assertEquals('serial', $issuances[0]->getValue());
+
+        $frequencies = $originInfo->getFrequencies();
+        self::assertNotEmpty($frequencies);
+        self::assertEquals(2, count($frequencies));
+        self::assertEquals('Three times a year', $frequencies[0]->getValue());
+
+        $agents = $originInfo->getAgents();
+        self::assertNotEmpty($agents);
+        // TODO: extend agent with name
+        //self::assertNotEmpty($agents[0]->getNamePart());
+    }
+}
diff --git a/tests/Mods/Reader/PartReaderTest.php b/tests/Mods/Reader/PartReaderTest.php
new file mode 100644
index 0000000..f8bd103
--- /dev/null
+++ b/tests/Mods/Reader/PartReaderTest.php
@@ -0,0 +1,144 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Element\Part;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Part element
+ */
+class PartReaderTest extends ModsReaderTest
+{
+
+    public function testGetPartsForBookDocument()
+    {
+        $parts = $this->bookReader->getParts();
+        self::assertNotEmpty($parts);
+        self::assertEquals(2, count($parts));
+        self::assertFirstPartForBookDocument($parts[0]);
+    }
+
+    public function testGetPartForBookDocument()
+    {
+        $part = $this->bookReader->getPart(1);
+        self::assertSecondPartForBookDocument($part);
+
+    }
+
+    public function testGetFirstPartForBookDocument()
+    {
+        $part = $this->bookReader->getFirstPart();
+        self::assertFirstPartForBookDocument($part);
+    }
+
+    public function testGetLastPartForBookDocument()
+    {
+        $part = $this->bookReader->getLastPart();
+        self::assertSecondPartForBookDocument($part);
+
+    }
+
+    public function testGetPartsByQueryForBookDocument()
+    {
+        $parts = $this->bookReader->getParts('[@order="2"]');
+        self::assertNotEmpty($parts);
+        self::assertEquals(1, count($parts));
+        self::assertSecondPartForBookDocument($parts[0]);
+    }
+
+    public function testGetNoPartsByQueryForBookDocument()
+    {
+        $parts = $this->bookReader->getParts('[@order="3"]');
+        self::assertEmpty($parts);
+    }
+
+    public function testGetNoPartByQueryForBookDocument()
+    {
+        $part = $this->bookReader->getPart(0, '[@order="3"]');
+        self::assertNull($part);
+    }
+
+    public function testGetNoFirstPartByQueryForBookDocument()
+    {
+        $part = $this->bookReader->getFirstPart('[@order="3"]');
+        self::assertNull($part);
+    }
+
+    public function testGetNoLastPartByQueryForBookDocument()
+    {
+        $part = $this->bookReader->getLastPart('[@order="3"]');
+        self::assertNull($part);
+    }
+
+    public function testGetNoPartsForSerialDocument()
+    {
+        $parts = $this->serialReader->getParts();
+        self::assertEmpty($parts);
+    }
+
+    private static function assertFirstPartForBookDocument(Part $part)
+    {
+        self::assertNotEmpty($part->getValue());
+        self::assertNotEmpty($part->getType());
+        self::assertEquals('poem', $part->getType());
+        self::assertNotEmpty($part->getOrder());
+        self::assertEquals(1, $part->getOrder());
+
+        $details = $part->getDetails();
+        self::assertNotEmpty($details);
+
+        $titles = $details[0]->getTitles();
+        self::assertNotEmpty($titles);
+        self::assertEquals('Wayfarers', $titles[0]->getValue());
+
+        $extents = $part->getExtents();
+        self::assertNotEmpty($extents);
+        self::assertEquals('pages', $extents[0]->getUnit());
+        self::assertEquals('97', $extents[0]->getStart()->getValue());
+        self::assertEquals('98', $extents[0]->getEnd()->getValue());
+
+        $dates = $part->getDates();
+        self::assertNotEmpty($dates);
+        self::assertEquals('marc', $dates[0]->getEncoding());
+        self::assertEquals('1989', $dates[0]->getValue());
+
+        $texts = $part->getTexts();
+        self::assertNotEmpty($texts);
+        self::assertEquals('Some random text', $texts[0]->getValue());
+    }
+
+    private static function assertSecondPartForBookDocument(Part $part)
+    {
+        self::assertNotEmpty($part->getValue());
+        self::assertNotEmpty($part->getType());
+        self::assertEquals('poem', $part->getType());
+        self::assertNotEmpty($part->getOrder());
+        self::assertEquals(2, $part->getOrder());
+
+        $details = $part->getDetails();
+        self::assertNotEmpty($details);
+        self::assertEquals(2, count($details));
+        self::assertEquals('begin', $details[0]->getType());
+        self::assertEquals(1, $details[0]->getLevel());
+        self::assertNotEmpty($details[0]->getTitles());
+        self::assertEquals('Vagabonds', $details[0]->getTitles()[0]->getValue());
+
+        $extents = $part->getExtents();
+        self::assertNotEmpty($extents);
+        self::assertEquals('pages', $extents[0]->getUnit());
+        self::assertEquals('99', $extents[0]->getStart()->getValue());
+        self::assertEquals('100', $extents[0]->getEnd()->getValue());
+        self::assertEquals(2, $extents[0]->getTotal());
+    }
+}
diff --git a/tests/Mods/Reader/PhysicalDescriptionReaderTest.php b/tests/Mods/Reader/PhysicalDescriptionReaderTest.php
new file mode 100644
index 0000000..8a8c531
--- /dev/null
+++ b/tests/Mods/Reader/PhysicalDescriptionReaderTest.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading PhysicalDescription element
+ */
+class PhysicalDescriptionReaderTest extends ModsReaderTest
+{
+
+    public function testGetPhysicalDescriptionsForBookDocument()
+    {
+        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions();
+        self::assertNotEmpty($physicalDescriptions);
+        self::assertEquals(1, count($physicalDescriptions));
+        self::assertNotEmpty($physicalDescriptions[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getForms());
+        self::assertEquals('marcform', $physicalDescriptions[0]->getForms()[0]->getAuthority());
+        self::assertEquals('print', $physicalDescriptions[0]->getForms()[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getExtents());
+        self::assertEquals('vii, 322 p. ; 23 cm.', $physicalDescriptions[0]->getExtents()[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getReformattingQualities());
+        self::assertEquals('replacement', $physicalDescriptions[0]->getReformattingQualities()[0]);
+        self::assertNotEmpty($physicalDescriptions[0]->getDigitalOrigins());
+        self::assertEquals('born digital', $physicalDescriptions[0]->getDigitalOrigins()[0]);
+        self::assertEmpty($physicalDescriptions[0]->getNotes());
+
+        $firstPhysicalDescription = $this->bookReader->getFirstPhysicalDescription();
+        self::assertEquals($physicalDescriptions[0], $firstPhysicalDescription);
+
+        $lastPhysicalDescription = $this->bookReader->getLastPhysicalDescription();
+        self::assertEquals($physicalDescriptions[0], $lastPhysicalDescription);
+    }
+
+    public function testGetPhysicalDescriptionsByQueryForBookDocument()
+    {
+        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="print"]');
+        self::assertNotEmpty($physicalDescriptions);
+        self::assertEquals(1, count($physicalDescriptions));
+        self::assertNotEmpty($physicalDescriptions[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getForms());
+        self::assertEquals('marcform', $physicalDescriptions[0]->getForms()[0]->getAuthority());
+        self::assertEquals('print', $physicalDescriptions[0]->getForms()[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getExtents());
+        self::assertEquals('vii, 322 p. ; 23 cm.', $physicalDescriptions[0]->getExtents()[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getReformattingQualities());
+        self::assertEquals('replacement', $physicalDescriptions[0]->getReformattingQualities()[0]);
+        self::assertNotEmpty($physicalDescriptions[0]->getDigitalOrigins());
+        self::assertEquals('born digital', $physicalDescriptions[0]->getDigitalOrigins()[0]);
+        self::assertEmpty($physicalDescriptions[0]->getNotes());
+    }
+
+    public function testGetNoPhysicalDescriptionsByQueryForBookDocument()
+    {
+        $physicalDescriptions = $this->bookReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="electronic"]');
+        self::assertEmpty($physicalDescriptions);
+
+        $firstPhysicalDescription = $this->bookReader->getFirstPhysicalDescription('[./mods:form[@authority="marcform"]="electronic"]');
+        self::assertNull($firstPhysicalDescription);
+
+        $lastPhysicalDescription = $this->bookReader->getLastPhysicalDescription('[./mods:form[@authority="marcform"]="electronic"]');
+        self::assertNull($lastPhysicalDescription);
+    }
+
+    public function testGetPhysicalDescriptionsForSerialDocument()
+    {
+        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions();
+        self::assertNotEmpty($physicalDescriptions);
+        self::assertEquals(1, count($physicalDescriptions));
+        self::assertNotEmpty($physicalDescriptions[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getForms());
+        self::assertEquals(2, count($physicalDescriptions[0]->getForms()));
+        self::assertEquals('gmd', $physicalDescriptions[0]->getForms()[1]->getAuthority());
+        self::assertEquals('electronic resource', $physicalDescriptions[0]->getForms()[1]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getInternetMediaTypes());
+        self::assertEquals('text/html', $physicalDescriptions[0]->getInternetMediaTypes()[0]->getValue());
+        self::assertEmpty($physicalDescriptions[0]->getExtents());
+        self::assertEmpty($physicalDescriptions[0]->getReformattingQualities());
+        self::assertEmpty($physicalDescriptions[0]->getDigitalOrigins());
+        self::assertEmpty($physicalDescriptions[0]->getNotes());
+    }
+
+    public function testGetPhysicalDescriptionsByQueryForSerialDocument()
+    {
+        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="electronic"]');
+        self::assertNotEmpty($physicalDescriptions);
+        self::assertEquals(1, count($physicalDescriptions));
+        self::assertNotEmpty($physicalDescriptions[0]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getForms());
+        self::assertEquals(2, count($physicalDescriptions[0]->getForms()));
+        self::assertEquals('gmd', $physicalDescriptions[0]->getForms()[1]->getAuthority());
+        self::assertEquals('electronic resource', $physicalDescriptions[0]->getForms()[1]->getValue());
+        self::assertNotEmpty($physicalDescriptions[0]->getInternetMediaTypes());
+        self::assertEquals('text/html', $physicalDescriptions[0]->getInternetMediaTypes()[0]->getValue());
+        self::assertEmpty($physicalDescriptions[0]->getExtents());
+        self::assertEmpty($physicalDescriptions[0]->getReformattingQualities());
+        self::assertEmpty($physicalDescriptions[0]->getDigitalOrigins());
+        self::assertEmpty($physicalDescriptions[0]->getNotes());
+    }
+
+    public function testGetNoPhysicalDescriptionsByQueryForSerialDocument()
+    {
+        $physicalDescriptions = $this->serialReader->getPhysicalDescriptions('[./mods:form[@authority="marcform"]="print"]');
+        self::assertEmpty($physicalDescriptions);
+    }
+}
diff --git a/tests/Mods/Reader/RecordInfoReaderTest.php b/tests/Mods/Reader/RecordInfoReaderTest.php
new file mode 100644
index 0000000..6ade386
--- /dev/null
+++ b/tests/Mods/Reader/RecordInfoReaderTest.php
@@ -0,0 +1,173 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\Exception\IncorrectValueInAttributeException;
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading RecordInfo element
+ */
+class RecordInfoReaderTest extends ModsReaderTest
+{
+
+    public function testGetRecordInfosForBookDocument()
+    {
+        $recordInfos = $this->bookReader->getRecordInfos();
+        self::assertNotEmpty($recordInfos);
+        self::assertEquals(1, count($recordInfos));
+        self::assertNotEmpty($recordInfos[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
+        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
+        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
+        self::assertEquals('DLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
+        self::assertEquals('marc', $recordInfos[0]->getRecordCreationDates()[0]->getEncoding());
+        self::assertEquals('990730', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
+        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
+        self::assertEquals('20060801143536.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
+        self::assertEquals('DE-14', $recordInfos[0]->getRecordIdentifiers()[0]->getSource());
+        self::assertEquals('11761548', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordOrigins());
+        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
+
+        $firstRecordInfo = $this->bookReader->getFirstRecordInfo();
+        self::assertEquals($recordInfos[0], $firstRecordInfo);
+
+        $lastRecordInfo = $this->bookReader->getLastRecordInfo();
+        self::assertEquals($recordInfos[0], $lastRecordInfo);
+    }
+
+    public function testGetRecordInfosByQueryForBookDocument()
+    {
+        $recordInfos = $this->bookReader->getRecordInfos('[./mods:descriptionStandard="aacr"]');
+        self::assertNotEmpty($recordInfos);
+        self::assertEquals(1, count($recordInfos));
+        self::assertNotEmpty($recordInfos[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
+        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
+        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
+        self::assertEquals('DLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
+        self::assertEquals('marc', $recordInfos[0]->getRecordCreationDates()[0]->getEncoding());
+        self::assertEquals('990730', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
+        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
+        self::assertEquals('20060801143536.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
+        self::assertEquals('DE-14', $recordInfos[0]->getRecordIdentifiers()[0]->getSource());
+        self::assertEquals('11761548', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordOrigins());
+        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
+    }
+
+    public function testGetNoRecordInfosByQueryForBookDocument()
+    {
+        $recordInfos = $this->bookReader->getRecordInfos('[./mods:descriptionStandard="xyz"]');
+        self::assertEmpty($recordInfos);
+
+        $firstRecordInfo = $this->bookReader->getFirstRecordInfo('[./mods:descriptionStandard="xyz"]');
+        self::assertNull($firstRecordInfo);
+
+        $lastRecordInfo = $this->bookReader->getLastRecordInfo('[./mods:descriptionStandard="xyz"]');
+        self::assertNull($lastRecordInfo);
+    }
+
+    public function testGetRecordInfosForSerialDocument()
+    {
+        $recordInfos = $this->serialReader->getRecordInfos();
+        self::assertNotEmpty($recordInfos);
+        self::assertEquals(1, count($recordInfos));
+        self::assertNotEmpty($recordInfos[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
+        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
+        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
+        self::assertEquals('NLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
+
+        $this->expectException(IncorrectValueInAttributeException::class);
+        $recordInfos[0]->getRecordCreationDates()[0]->getEncoding();
+
+        self::assertEquals('021127', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
+        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
+        self::assertEquals('20080910160139.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
+        self::assertEquals('15446420', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
+        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordInfoNotes());
+        self::assertEquals(2, count($recordInfos[0]->getRecordInfoNotes()));
+        self::assertEquals('Some info', $recordInfos[0]->getRecordInfoNotes()[1]->getValue());
+
+        $languages = $recordInfos[0]->getLanguageOfCatalogings();
+        self::assertNotEmpty($languages);
+        self::assertNotNull($languages[0]->getLanguageTerm());
+        self::assertEquals('code', $languages[0]->getLanguageTerm()->getType());
+        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerm()->getAuthority());
+        self::assertEquals('eng', $languages[0]->getLanguageTerm()->getValue());
+        self::assertNotNull($languages[0]->getScriptTerm());
+        self::assertEquals('code', $languages[0]->getScriptTerm()->getType());
+        self::assertEquals('iso15924', $languages[0]->getScriptTerm()->getAuthority());
+        self::assertEquals('Latn', $languages[0]->getScriptTerm()->getValue());
+    }
+
+    public function testGetRecordInfosByQueryForSerialDocument()
+    {
+        $recordInfos = $this->serialReader->getRecordInfos('[./mods:descriptionStandard="aacr"]');
+        self::assertNotEmpty($recordInfos);
+        self::assertEquals(1, count($recordInfos));
+        self::assertNotEmpty($recordInfos[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getDescriptionStandards());
+        self::assertEquals('aacr', $recordInfos[0]->getDescriptionStandards()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordContentSources());
+        self::assertEquals('marcorg', $recordInfos[0]->getRecordContentSources()[0]->getAuthority());
+        self::assertEquals('NLC', $recordInfos[0]->getRecordContentSources()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordCreationDates());
+
+        $this->expectException(IncorrectValueInAttributeException::class);
+        $recordInfos[0]->getRecordCreationDates()[0]->getEncoding();
+
+        self::assertEquals('021127', $recordInfos[0]->getRecordCreationDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordChangeDates());
+        self::assertEquals('iso8601', $recordInfos[0]->getRecordChangeDates()[0]->getEncoding());
+        self::assertEquals('20080910160139.0', $recordInfos[0]->getRecordChangeDates()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordIdentifiers());
+        self::assertEquals('15446420', $recordInfos[0]->getRecordIdentifiers()[0]->getValue());
+        self::assertStringContainsString('Converted from MARCXML to MODS', $recordInfos[0]->getRecordOrigins()[0]->getValue());
+        self::assertNotEmpty($recordInfos[0]->getRecordInfoNotes());
+        self::assertEquals(2, count($recordInfos[0]->getRecordInfoNotes()));
+        self::assertEquals('Some info', $recordInfos[0]->getRecordInfoNotes()[1]->getValue());
+
+        $languages = $recordInfos[0]->getLanguageOfCatalogings();
+        self::assertNotEmpty($languages);
+        self::assertNotNull($languages[0]->getLanguageTerm());
+        self::assertEquals('code', $languages[0]->getLanguageTerm()->getType());
+        self::assertEquals('iso639-2b', $languages[0]->getLanguageTerm()->getAuthority());
+        self::assertEquals('eng', $languages[0]->getLanguageTerm()->getValue());
+        self::assertNotNull($languages[0]->getScriptTerm());
+        self::assertEquals('code', $languages[0]->getScriptTerm()->getType());
+        self::assertEquals('iso15924', $languages[0]->getScriptTerm()->getAuthority());
+        self::assertEquals('Latn', $languages[0]->getScriptTerm()->getValue());
+    }
+
+    public function testGetNoRecordInfosByQueryForSerialDocument()
+    {
+        $recordInfos = $this->serialReader->getRecordInfos('[./mods:descriptionStandard="xyz"]');
+        self::assertEmpty($recordInfos);
+    }
+}
diff --git a/tests/Mods/Reader/RelatedItemReaderTest.php b/tests/Mods/Reader/RelatedItemReaderTest.php
new file mode 100644
index 0000000..58dd24e
--- /dev/null
+++ b/tests/Mods/Reader/RelatedItemReaderTest.php
@@ -0,0 +1,94 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading RelatedItem element
+ */
+class RelatedItemReaderTest extends ModsReaderTest
+{
+
+    public function testGetNoRelatedItemsForBookDocument()
+    {
+        $relatedItems = $this->bookReader->getRelatedItems();
+        self::assertEmpty($relatedItems);
+
+        $firstRelatedItem = $this->bookReader->getFirstRelatedItem();
+        self::assertNull($firstRelatedItem);
+
+        $lastRelatedItem = $this->bookReader->getLastRelatedItem();
+        self::assertNull($lastRelatedItem);
+    }
+
+    public function testGetRelatedItemsForSerialDocument()
+    {
+        $relatedItems = $this->serialReader->getRelatedItems();
+        self::assertNotEmpty($relatedItems);
+        self::assertEquals(1, count($relatedItems));
+
+        $relatedItem = $relatedItems[0];
+        self::assertNotEmpty($relatedItem->getType());
+        self::assertEquals('preceding', $relatedItem->getType());
+        self::assertNotEmpty($relatedItem->getTitleInfos());
+        self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getTitleInfos()[0]->getTitle()->getValue());
+        self::assertNotEmpty($relatedItem->getOriginInfos());
+        //TODO: implement back compatibility for 'publisher' element
+        //self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getOriginInfos()[0]->getPublisher());
+        self::assertNotEmpty($relatedItem->getIdentifiers());
+        self::assertEquals(4, count($relatedItem->getIdentifiers()));
+        self::assertEquals('1525-321X', $relatedItem->getIdentifiers()[0]->getValue());
+
+        $localIdentifiers = $relatedItem->getIdentifiers('[@type="local"]');
+        self::assertNotEmpty($localIdentifiers);
+        self::assertEquals(3, count($localIdentifiers));
+        self::assertEquals('(OCoLC)41477508', $localIdentifiers[0]->getValue());
+
+        $firstRelatedItem = $this->serialReader->getFirstRelatedItem();
+        self::assertEquals($relatedItem, $firstRelatedItem);
+
+        $lastRelatedItem = $this->serialReader->getLastRelatedItem();
+        self::assertEquals($relatedItem, $lastRelatedItem);
+    }
+
+    public function testGetRelatedItemsByQueryForSerialDocument()
+    {
+        $relatedItems = $this->serialReader->getRelatedItems('[./mods:identifier="1525-321X"]');
+        self::assertNotEmpty($relatedItems);
+        self::assertEquals(1, count($relatedItems));
+
+        $relatedItem = $relatedItems[0];
+        self::assertNotEmpty($relatedItem->getType());
+        self::assertEquals('preceding', $relatedItem->getType());
+        self::assertNotEmpty($relatedItem->getTitleInfos());
+        self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getTitleInfos()[0]->getTitle()->getValue());
+        self::assertNotEmpty($relatedItem->getOriginInfos());
+        //TODO: implement back compatibility for 'publisher' element
+        //self::assertEquals('Journal of southern academic and special librarianship', $relatedItem->getOriginInfos()[0]->getPublisher());
+        self::assertNotEmpty($relatedItem->getIdentifiers());
+        self::assertEquals(4, count($relatedItem->getIdentifiers()));
+        self::assertEquals('1525-321X', $relatedItem->getIdentifiers()[0]->getValue());
+
+        $localIdentifiers = $relatedItem->getIdentifiers('[@type="local"]');
+        self::assertNotEmpty($localIdentifiers);
+        self::assertEquals(3, count($localIdentifiers));
+        self::assertEquals('(OCoLC)41477508', $localIdentifiers[0]->getValue());
+    }
+
+    public function testGetNoRelatedItemsByQueryForSerialDocument()
+    {
+        $relatedItems = $this->serialReader->getRelatedItems('[./mods:identifier="15-32"]');
+        self::assertEmpty($relatedItems);
+    }
+}
diff --git a/tests/Mods/Reader/SubjectReaderTest.php b/tests/Mods/Reader/SubjectReaderTest.php
new file mode 100644
index 0000000..de3f0c3
--- /dev/null
+++ b/tests/Mods/Reader/SubjectReaderTest.php
@@ -0,0 +1,121 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading Subject element
+ */
+class SubjectReaderTest extends ModsReaderTest
+{
+
+    public function testGetSubjectsForBookDocument()
+    {
+        $subjects = $this->bookReader->getSubjects();
+        self::assertNotEmpty($subjects);
+        self::assertEquals(8, count($subjects));
+        self::assertNotEmpty($subjects[0]->getValue());
+        $hierarchicalGeographics = $subjects[0]->getHierarchicalGeographics();
+        self::assertNotEmpty($hierarchicalGeographics);
+        self::assertNotEmpty($hierarchicalGeographics[0]->getCountries());
+        self::assertEquals(2, count($hierarchicalGeographics[0]->getCountries()));
+        self::assertEquals(1, $hierarchicalGeographics[0]->getCountries()[0]->getLevel());
+        self::assertEquals('United Kingdom', $hierarchicalGeographics[0]->getCountries()[0]->getValue());
+        self::assertNotEmpty($hierarchicalGeographics[0]->getRegions());
+        self::assertEquals('North West', $hierarchicalGeographics[0]->getRegions()[0]->getValue());
+        self::assertNotEmpty($hierarchicalGeographics[0]->getCounties());
+        self::assertEquals('Cumbria', $hierarchicalGeographics[0]->getCounties()[0]->getValue());
+        self::assertNotEmpty($hierarchicalGeographics[0]->getCities());
+        self::assertEquals('Providence', $hierarchicalGeographics[0]->getCities()[0]->getValue());
+
+        $citySections = $hierarchicalGeographics[0]->getCitySections();
+        self::assertNotEmpty($citySections);
+        self::assertEquals(2, count($citySections));
+        self::assertEquals('neighborhood', $citySections[0]->getType());
+        self::assertEquals(1, $citySections[0]->getLevel());
+        self::assertEquals('East Side', $citySections[0]->getValue());
+
+        $areas = $hierarchicalGeographics[0]->getAreas();
+        self::assertNotEmpty($areas);
+        self::assertEquals('national park', $areas[0]->getType());
+        self::assertEquals('Lake District', $areas[0]->getValue());
+
+        $firstSubject = $this->bookReader->getFirstSubject();
+        self::assertEquals($subjects[0], $firstSubject);
+
+        $lastSubject = $this->bookReader->getLastSubject();
+        self::assertEquals($subjects[7], $lastSubject);
+    }
+
+    public function testGetSubjectsByQueryForBookDocument()
+    {
+        $subjects = $this->bookReader->getSubjects('[./mods:topic="Mass media"]');
+        self::assertNotEmpty($subjects);
+        self::assertEquals(1, count($subjects));
+        self::assertNotEmpty($subjects[0]->getAuthority());
+        self::assertEquals('lcsh', $subjects[0]->getAuthority());
+        self::assertNotEmpty($subjects[0]->getValue());
+        self::assertNotEmpty($subjects[0]->getTopics());
+        self::assertEquals(2, count($subjects[0]->getTopics()));
+        self::assertEquals('Political aspects', $subjects[0]->getTopics()[1]->getValue());
+        self::assertNotEmpty($subjects[0]->getGeographics());
+        self::assertEquals(1, count($subjects[0]->getGeographics()));
+        self::assertEquals('United States', $subjects[0]->getGeographics()[0]->getValue());
+    }
+
+    public function testGetNoSubjectsByQueryForBookDocument()
+    {
+        $subjects = $this->bookReader->getSubjects('[./mods:topic="Unknown"]');
+        self::assertEmpty($subjects);
+
+        $firstSubject = $this->bookReader->getFirstSubject('[./mods:topic="Unknown"]');
+        self::assertNull($firstSubject);
+
+        $lastSubject = $this->bookReader->getLastSubject('[./mods:topic="Unknown"]');
+        self::assertNull($lastSubject);
+    }
+
+    public function testGetSubjectsForSerialDocument()
+    {
+        $subjects = $this->serialReader->getSubjects();
+        self::assertNotEmpty($subjects);
+        self::assertEquals(7, count($subjects));
+        self::assertNotEmpty($subjects[0]->getValue());
+        self::assertNotEmpty($subjects[0]->getCartographics());
+
+        // TODO: implement reading of cartographics
+        /*self::assertNotEmpty($subjects[0]->getCartographics()[0]->getCoordinates());
+        self::assertEquals('', $subjects[0]->getCartographics()[0]->getCoordinates()[0]->getValue());
+        self::assertNotEmpty($subjects[0]->getCartographics()[0]->getScale());
+        self::assertNotEmpty($subjects[0]->getCartographics()[0]->getProjection());*/
+    }
+
+    public function testGetSubjectsByQueryForSerialDocument()
+    {
+        $subjects = $this->serialReader->getSubjects('[./mods:genre="Directories"]');
+        self::assertNotEmpty($subjects);
+        self::assertEquals(1, count($subjects));
+        self::assertNotEmpty($subjects[0]->getValue());
+        self::assertNotEmpty($subjects[0]->getTopics());
+        self::assertEquals('Web sites', $subjects[0]->getTopics()[0]->getValue());
+        self::assertNotEmpty($subjects[0]->getGenres());
+        self::assertEquals('Directories', $subjects[0]->getGenres()[0]->getValue());
+    }
+
+    public function testGetNoSubjectsByQueryForSerialDocument()
+    {
+        $subjects = $this->serialReader->getSubjects('[./mods:topic="Unknown"]');
+        self::assertEmpty($subjects);
+    }
+}
diff --git a/tests/Mods/Reader/TableOfContentsReaderTest.php b/tests/Mods/Reader/TableOfContentsReaderTest.php
new file mode 100644
index 0000000..69aa737
--- /dev/null
+++ b/tests/Mods/Reader/TableOfContentsReaderTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading TableOfContents element
+ */
+class TableOfContentsReaderTest extends ModsReaderTest
+{
+
+    public function testGetTablesOfContentsForBookDocument()
+    {
+        $tableOfContents = $this->bookReader->getTablesOfContents();
+        self::assertNotEmpty($tableOfContents);
+        self::assertEquals(1, count($tableOfContents));
+        self::assertNotEmpty($tableOfContents[0]->getValue());
+        self::assertEquals('Bluegrass odyssey -- Hills of Tennessee -- Sassafrass -- Muddy river -- Take your shoes off Moses -- Let Smokey Mountain smoke get in your eyes -- Farewell party -- Faded love', $tableOfContents[0]->getValue());
+        self::assertNotEmpty($tableOfContents[0]->getDisplayLabel());
+        self::assertEquals('Chapters', $tableOfContents[0]->getDisplayLabel());
+
+        // TODO: implement reading of elements
+    }
+
+    public function testGetTablesOfContentsByQueryForBookDocument()
+    {
+        $tableOfContents = $this->bookReader->getTablesOfContents('[@displayLabel="Chapters"]');
+        self::assertNotEmpty($tableOfContents);
+        self::assertEquals(1, count($tableOfContents));
+        self::assertNotEmpty($tableOfContents[0]->getValue());
+        self::assertEquals('Bluegrass odyssey -- Hills of Tennessee -- Sassafrass -- Muddy river -- Take your shoes off Moses -- Let Smokey Mountain smoke get in your eyes -- Farewell party -- Faded love', $tableOfContents[0]->getValue());
+        self::assertNotEmpty($tableOfContents[0]->getDisplayLabel());
+        self::assertEquals('Chapters', $tableOfContents[0]->getDisplayLabel());
+
+        // TODO: implement reading of elements
+    }
+
+    public function testGetNoTablesOfContentsByQueryForBookDocument()
+    {
+        $tableOfContents = $this->bookReader->getTablesOfContents('[@displayLabel="Pages"]');
+        self::assertEmpty($tableOfContents);
+    }
+
+    public function testGetNoTablesOfContentsForSerialDocument()
+    {
+        $tableOfContents = $this->serialReader->getTablesOfContents();
+        self::assertEmpty($tableOfContents);
+    }
+}
diff --git a/tests/Mods/Reader/TitleInfoReader.php b/tests/Mods/Reader/TitleInfoReader.php
new file mode 100644
index 0000000..3cf32c7
--- /dev/null
+++ b/tests/Mods/Reader/TitleInfoReader.php
@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading TitleInfo element
+ */
+class TitleInfoReaderTest extends ModsReaderTest
+{
+
+    public function testGetTitleInfosForBookDocument()
+    {
+        $titleInfos = $this->bookReader->getTitleInfos();
+        self::assertNotEmpty($titleInfos);
+        self::assertEquals(2, count($titleInfos));
+        self::assertNotEmpty($titleInfos[0]->getValue());
+        self::assertEquals('Sound and fury', $titleInfos[0]->getTitle()->getValue());
+        self::assertEquals('the making of the punditocracy', $titleInfos[0]->getSubTitle()->getValue());
+    }
+
+    public function testGetTitleInfosByQueryForBookDocument()
+    {
+        $titleInfos = $this->bookReader->getTitleInfos('[@xml:lang="fr"]');
+        self::assertNotEmpty($titleInfos);
+        self::assertEquals(1, count($titleInfos));
+        self::assertNotEmpty($titleInfos[0]->getValue());
+        self::assertNotEmpty($titleInfos[0]->getType());
+        self::assertEquals('translated', $titleInfos[0]->getType());
+        self::assertNotEmpty($titleInfos[0]->getNonSort());
+        self::assertEquals('Le', $titleInfos[0]->getNonSort()->getValue());
+        self::assertNotEmpty($titleInfos[0]->getTitle());
+        self::assertEquals('bruit et la fureur', $titleInfos[0]->getTitle()->getValue());
+        self::assertNotEmpty($titleInfos[0]->getSubTitle());
+        self::assertEquals('la création de la punditocratie', $titleInfos[0]->getSubTitle()->getValue());
+    }
+
+    public function testGetTitleInfosForSerialDocument()
+    {
+        $titleInfos = $this->serialReader->getTitleInfos();
+        self::assertNotEmpty($titleInfos);
+        self::assertEquals(3, count($titleInfos));
+        self::assertNotEmpty($titleInfos[0]->getValue());
+        self::assertNotEmpty($titleInfos[0]->getTitle());
+        self::assertEquals('E-JASL', $titleInfos[0]->getTitle()->getValue());
+        self::assertNotEmpty($titleInfos[0]->getSubTitle());
+        self::assertEquals('the electronic journal of academic and special librarianship', $titleInfos[0]->getSubTitle()->getValue());
+    }
+
+    public function testGetTitleInfosByQueryForSerialDocument()
+    {
+        $titleInfos = $this->serialReader->getTitleInfos('[@type="abbreviated"]');
+        self::assertNotEmpty($titleInfos);
+        self::assertEquals(1, count($titleInfos));
+        self::assertNotEmpty($titleInfos[0]->getValue());
+        self::assertEquals('E-JASL', $titleInfos[0]->getTitle()->getValue());
+        self::assertNotEmpty($titleInfos[0]->getSubTitle());
+        self::assertEquals('(Athabasca)', $titleInfos[0]->getSubTitle()->getValue());
+    }
+
+    public function testGetNoTitleInfosByQueryForSerialDocument()
+    {
+        $titleInfos = $this->serialReader->getTitleInfos('[@type="uniform"]');
+        self::assertEmpty($titleInfos);
+    }
+}
diff --git a/tests/Mods/Reader/TypeOfResourceTest.php b/tests/Mods/Reader/TypeOfResourceTest.php
new file mode 100644
index 0000000..fbce62c
--- /dev/null
+++ b/tests/Mods/Reader/TypeOfResourceTest.php
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * Copyright (C) 2024 Saxon State and University Library Dresden
+ *
+ * This file is part of the php-mods-reader.
+ *
+ * @license GNU General Public License version 3 or later.
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+namespace Slub\Mods\Reader;
+
+use Slub\Mods\ModsReaderTest;
+
+/**
+ * Tests for reading TypeOfResource element
+ */
+class TypeOfResourceReaderTest extends ModsReaderTest
+{
+
+    public function testGetTypeOfResourceForBookDocument()
+    {
+        $typeOfResource = $this->bookReader->getTypeOfResource();
+        self::assertNotNull($typeOfResource);
+        self::assertNotEmpty($typeOfResource->getDisplayLabel());
+        self::assertEquals('format', $typeOfResource->getDisplayLabel());
+        self::assertNotEmpty($typeOfResource->getValue());
+        self::assertEquals('text', $typeOfResource->getValue());
+    }
+
+    public function testGetTypeOfResourceByQueryForBookDocument()
+    {
+        $typeOfResource = $this->bookReader->getTypeOfResource('[@displayLabel="format"]');
+        self::assertNotNull($typeOfResource);
+        self::assertNotEmpty($typeOfResource->getDisplayLabel());
+        self::assertEquals('format', $typeOfResource->getDisplayLabel());
+        self::assertNotEmpty($typeOfResource->getValue());
+        self::assertEquals('text', $typeOfResource->getValue());
+    }
+
+    public function testGetNoTypeOfResourceByQueryForBookDocument()
+    {
+        $typeOfResource = $this->bookReader->getTypeOfResource('[@displayLabel="random"]');
+        self::assertNull($typeOfResource);
+    }
+
+    public function testGetTypeOfResourceForSerialDocument()
+    {
+        $typeOfResource = $this->serialReader->getTypeOfResource();
+        self::assertNotNull($typeOfResource);
+        self::assertEmpty($typeOfResource->getDisplayLabel());
+        self::assertNotEmpty($typeOfResource->getValue());
+        self::assertEquals('text', $typeOfResource->getValue());
+    }
+
+    public function testGetNoTypeOfResourceByQueryForSerialDocument()
+    {
+        $abstract = $this->serialReader->getAbstract('[@displayForm="format"]');
+        self::assertNull($abstract);
+    }
+}