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Migrate and restructure resources watson tests to JUnit 5 eclipse-pla…
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…tform#903

Migrates the tests in org.eclipse.core.tests.internal.watson to JUnit 5.
- Exchange JUnit 4 test annotations
- Replace JUnit 4 assertions with JUnit 5 or AssertJ assertions
- Restructure the tests: replace misused inheritance with helper class,
replace polymorphic with imperative behavior specification, and
parameterize tests

Contributes to
eclipse-platform#903
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@HeikoKlare @akurtakov
HeikoKlare authored and akurtakov committed Sep 30, 2024
1 parent 2f90d3c commit ee307c5
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75 changes: 23 additions & 52 deletions ....tests.resources/src/org/eclipse/core/tests/internal/watson/DeltaChainFlatteningTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,65 +13,36 @@
*******************************************************************************/
package org.eclipse.core.tests.internal.watson;

import java.io.*;
import org.eclipse.core.internal.watson.*;
import org.eclipse.core.runtime.IPath;
import org.junit.Before;
import org.junit.Test;

public class DeltaChainFlatteningTest extends ElementTreeSerializationTest {
protected ElementTree[] fDeltaChain;
protected ElementTree[] fRefriedDeltaChain;
import static org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.doPipeTest;

/**
* doRead method comment.
*/
@Override
public Object doRead(ElementTreeReader reader, DataInputStream input) throws IOException {
return reader.readDeltaChain(input);
}
import java.io.IOException;
import org.eclipse.core.internal.watson.DefaultElementComparator;
import org.eclipse.core.internal.watson.ElementTree;
import org.eclipse.core.internal.watson.ElementTreeReader;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.StreamReader;
import org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.StreamWriter;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ArgumentsSource;

public class DeltaChainFlatteningTest implements IPathConstants {
/**
* Runs a test for this class at a certain depth and path
* Tests the reading and writing of element deltas
*/
@Override
public void doTest(IPath path, int depth) {
fSubtreePath = path;
fDepth = depth;
fDeltaChain = TestUtil.doRoutineOperations(fTree, project1);
@ParameterizedTest
@ArgumentsSource(ElementTreeSerializationTestHelper.class)
public void test0(IPath path, int depth) throws IOException {
ElementTree tree = TestUtil.createTestElementTree();
ElementTree[] fDeltaChain = TestUtil.doRoutineOperations(tree, project1);
TestUtil.scramble(fDeltaChain);

ElementTree[] refried = (ElementTree[]) doPipeTest();
StreamWriter streamWriter = (writer, output) -> writer.writeDeltaChain(fDeltaChain, path, depth, output,
DefaultElementComparator.getComparator());
StreamReader streamReader = ElementTreeReader::readDeltaChain;
ElementTree[] refried = (ElementTree[]) doPipeTest(streamWriter, streamReader);

for (int j = 0; j < refried.length; j++) {
TestUtil.assertEqualTrees("Same after delta chain serialize", fDeltaChain[j], refried[j], fSubtreePath, fDepth);
TestUtil.assertEqualTrees("Same after delta chain serialize", fDeltaChain[j], refried[j], path, depth);
}
}

/**
* doWrite method comment.
*/
@Override
public void doWrite(ElementTreeWriter writer, DataOutputStream output) throws IOException {
writer.writeDeltaChain(fDeltaChain, fSubtreePath, fDepth, output, DefaultElementComparator.getComparator());
}

/**
* Sets up the delta chain to be serialized
*/
@Override
@Before
public void setUp() throws Exception {
super.setUp();
fTree = TestUtil.createTestElementTree();
/* do a bunch of operations on fTree to build a delta chain */
fDeltaChain = TestUtil.doManyRoutineOperations(fTree, project1);
}

/**
* Tests the reading and writing of element deltas
*/
@Test
public void test0() {
doExhaustiveTests();
}
}
104 changes: 44 additions & 60 deletions ....core.tests.resources/src/org/eclipse/core/tests/internal/watson/DeltaFlatteningTest.java
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Expand Up @@ -13,51 +13,22 @@
*******************************************************************************/
package org.eclipse.core.tests.internal.watson;

import java.io.*;
import org.eclipse.core.internal.watson.*;
import org.eclipse.core.runtime.IPath;
import org.junit.Before;
import org.junit.Test;

public class DeltaFlatteningTest extends ElementTreeSerializationTest {
protected ElementTree fNewTree;
protected IPath project3, folder5, file4, file5;

/**
* Performs the serialization activity for this test
*/
@Override
public Object doRead(ElementTreeReader reader, DataInputStream input) throws IOException {
return reader.readDelta(fNewTree, input);
}

/**
* Runs a test for this class at a certain depth and path
*/
@Override
public void doTest(IPath path, int depth) {
import static org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.doPipeTest;

/* Get an element tree from somewhere. */
fTree = TestUtil.createTestElementTree();
fSubtreePath = path;
fDepth = depth;
ElementTree newTree = (ElementTree) doPipeTest();
TestUtil.assertEqualTrees(this.getClass() + "test0", fTree, newTree, fSubtreePath, fDepth);
}
import java.io.IOException;
import org.eclipse.core.internal.watson.DefaultElementComparator;
import org.eclipse.core.internal.watson.ElementTree;
import org.eclipse.core.internal.watson.ElementTreeWriter;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.StreamReader;
import org.eclipse.core.tests.internal.watson.ElementTreeSerializationTestHelper.StreamWriter;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ArgumentsSource;

/**
* Performs the serialization activity for this test
*/
@Override
public void doWrite(ElementTreeWriter writer, DataOutputStream output) throws IOException {
writer.writeDelta(fTree, fNewTree, fSubtreePath, fDepth, output, DefaultElementComparator.getComparator());
}
public class DeltaFlatteningTest implements IPathConstants {

@Override
@Before
public void setUp() throws Exception {
super.setUp();
fTree = TestUtil.createTestElementTree();
private ElementTree prepareTreeForChange() {
ElementTree tree = TestUtil.createTestElementTree();
/**
* The following changes will be made to the base tree:
* - add project3
Expand All @@ -69,32 +40,45 @@ public void setUp() throws Exception {
* - delete folder3
*/

fNewTree = fTree.newEmptyDelta();
ElementTree newTree = tree.newEmptyDelta();

project3 = solution.append("project3");
folder5 = project3.append("folder5");
file4 = project2.append("file4");
file5 = folder1.append("file5");
IPath project3 = solution.append("project3");
IPath folder5 = project3.append("folder5");
IPath file4 = project2.append("file4");
IPath file5 = folder1.append("file5");

fNewTree.createElement(project3, "project3");
fNewTree.createElement(folder5, "folder5");
fNewTree.deleteElement(file1);
fNewTree.createElement(folder2, "ChangedData");
fNewTree.createElement(file4, "file4");
fNewTree.createElement(file5, "file5");
fNewTree.deleteElement(folder3);
fNewTree.immutable();
newTree.createElement(project3, "project3");
newTree.createElement(folder5, "folder5");
newTree.deleteElement(file1);
newTree.createElement(folder2, "ChangedData");
newTree.createElement(file4, "file4");
newTree.createElement(file5, "file5");
newTree.deleteElement(folder3);
newTree.immutable();

/* assert the new structure */
TestUtil.assertHasPaths(fNewTree, new IPath[] {solution, project1, project2, project3, file2, file4, file5, folder1, folder2, folder4, folder5});
TestUtil.assertNoPaths(fNewTree, new IPath[] {file1, file3, folder3});
TestUtil.assertHasPaths(newTree, new IPath[] { solution, project1, project2, project3, file2, file4, file5,
folder1, folder2, folder4, folder5 });
TestUtil.assertNoPaths(newTree, new IPath[] { file1, file3, folder3 });

return newTree;
}

/**
* Tests the reading and writing of element deltas
*/
@Test
public void test0() {
doExhaustiveTests();
@ParameterizedTest
@ArgumentsSource(ElementTreeSerializationTestHelper.class)
public void test0(IPath path, int depth) throws IOException {
ElementTree tree = TestUtil.createTestElementTree();
IPath testTreeRootPath = solution;
ElementTree treeForChange = prepareTreeForChange();

StreamReader streamReader = (reader, input) -> reader.readDelta(treeForChange, input);
StreamWriter streamWriter = (writer, output) -> writer.writeDelta(tree, treeForChange, testTreeRootPath,
ElementTreeWriter.D_INFINITE, output, DefaultElementComparator.getComparator());
ElementTree newTree = (ElementTree) doPipeTest(streamWriter, streamReader);

TestUtil.assertEqualTrees(this.getClass() + "test0", tree, newTree, path, depth);
}
}
82 changes: 23 additions & 59 deletions ...tests.resources/src/org/eclipse/core/tests/internal/watson/ElementTreeDeltaChainTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,46 +13,30 @@
*******************************************************************************/
package org.eclipse.core.tests.internal.watson;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.eclipse.core.internal.watson.ElementTree;
import org.eclipse.core.runtime.IPath;
import org.junit.Before;
import org.junit.Test;
import org.junit.jupiter.api.Test;

/**
* Tests the ElementTree.mergeDeltaChain() method.
*/
public class ElementTreeDeltaChainTest implements IPathConstants {
protected ElementTree fTree;
protected IPath project3;

@Before
public void setUp() throws Exception {
fTree = TestUtil.createTestElementTree();
project3 = solution.append("project3");
}
private static final IPath project3 = solution.append("project3");

/**
* Tries some bogus merges and makes sure an exception is thrown.
*/
@Test
public void testIllegalMerges() {
fTree = fTree.newEmptyDelta();
ElementTree tree = TestUtil.createTestElementTree().newEmptyDelta();

/* null trees */
boolean caught = false;
Exception ex = null;
try {
fTree.mergeDeltaChain(solution, null);
} catch (RuntimeException e) {
caught = true;
ex = e;
} finally {
assertTrue("", caught);
}
assertThrows(RuntimeException.class, () -> tree.mergeDeltaChain(solution, null));

/* create a tree with a whole bunch of operations in project3 */
ElementTree projectTree = new ElementTree();
Expand All @@ -64,45 +48,24 @@ public void testIllegalMerges() {
TestUtil.scramble(trees);

/* null handle */
caught = false;
try {
fTree.mergeDeltaChain(null, trees);
} catch (RuntimeException e) {
caught = true;
ex = e;
} finally {
assertTrue(ex.getMessage(), caught);
}
assertThrows(RuntimeException.class, () -> tree.mergeDeltaChain(null, trees));

/* non-existent handle */
caught = false;
try {
fTree.mergeDeltaChain(solution.append("bogosity"), trees);
} catch (RuntimeException e) {
caught = true;
ex = e;
} finally {
assertTrue(ex.getMessage(), caught);
}
assertThrows(RuntimeException.class, () -> tree.mergeDeltaChain(solution.append("bogosity"), trees));

/* immutable receiver */
caught = false;
try {
fTree.immutable();
fTree.mergeDeltaChain(solution, trees);
} catch (RuntimeException e) {
caught = true;
ex = e;
} finally {
assertTrue(ex.getMessage(), caught);
}
assertThrows(RuntimeException.class, () -> {
tree.immutable();
tree.mergeDeltaChain(solution, trees);
});
}

/**
* Tests the mergeDeltaChain method
*/
@Test
public void testMergeDeltaChain() {
ElementTree tree = TestUtil.createTestElementTree();
/* create a tree with a whole bunch of operations in project3 */
ElementTree projectTree = new ElementTree();
projectTree.createElement(solution, "Dummy");
Expand All @@ -119,13 +82,13 @@ public void testMergeDeltaChain() {
TestUtil.scramble(trees, copies);

/* do a bunch of operations on fTree to build a delta chain */
TestUtil.doRoutineOperations(fTree, solution);
fTree = fTree.newEmptyDelta();
TestUtil.doRoutineOperations(tree, solution);
tree = tree.newEmptyDelta();

/* merge the delta chains */
ElementTree newTree = fTree.mergeDeltaChain(project3, trees);
assertNotEquals("returned tree should be different", newTree, fTree);
assertFalse("returned tree should be open", newTree.isImmutable());
ElementTree newTree = tree.mergeDeltaChain(project3, trees);
assertNotEquals(newTree, tree);
assertFalse(newTree.isImmutable());

/* make sure old and new trees have same structure */
for (int i = 0; i < trees.length; i++) {
Expand All @@ -142,13 +105,14 @@ public void testMergeDeltaChain() {
*/
@Test
public void testMergeOverwrite() {
ElementTree tree = TestUtil.createTestElementTree();
/* create a tree with a whole bunch of operations in project3 */
ElementTree projectTree = new ElementTree();
projectTree.createElement(solution, "Dummy");
projectTree.createElement(project3, "project3");

/* form a delta chain on fTree */
ElementTree[] trees = TestUtil.doManyRoutineOperations(fTree, solution);
ElementTree[] trees = TestUtil.doManyRoutineOperations(tree, solution);

/* scramble the order of the project trees */
TestUtil.scramble(trees);
Expand All @@ -157,7 +121,7 @@ public void testMergeOverwrite() {
ElementTree newTree = projectTree.mergeDeltaChain(solution, trees);

assertNotEquals(newTree, projectTree);
assertTrue(newTree.getElementData(solution).equals("solution"));
assertEquals("solution", newTree.getElementData(solution));
TestUtil.assertTreeStructure(newTree);
}
}
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