Add phone validator

Ensure all phone numbers have 8 digits according to Singapore phone number format

src/main/java/seedu/address/model/person/Phone.java

@@ -11,8 +11,9 @@ public class Phone {
 
 
     public static final String MESSAGE_CONSTRAINTS =
-            "Phone numbers should only contain numbers, and it should be at least 3 digits long";
-    public static final String VALIDATION_REGEX = "\\d{3,}";
+            "Phone numbers should only contain numbers, and it should be 8 digits long "
+                    + "according to Singapore mobile number format";
+    public static final String VALIDATION_REGEX = "\\d{8}";
     public final String value;
 
     /**

src/test/data/JsonSerializableAddressBookTest/typicalPersonsAddressBook.json

@@ -55,7 +55,7 @@
     "metadata": "I like to play basketball."
   }, {
     "name" : "Elle Meyer",
-    "phone" : "9482224",
+    "phone" : "94822242",
     "email" : "[email protected]",
     "address" : "michegan ave",
     "roles" : [ ],
@@ -68,7 +68,7 @@
     "metadata": "I support Manchester United."
   }, {
     "name" : "Fiona Kunz",
-    "phone" : "9482427",
+    "phone" : "94824272",
     "email" : "[email protected]",
     "address" : "little tokyo",
     "roles" : [ ],
@@ -81,7 +81,7 @@
     "metadata": "I support Manchester United."
   }, {
     "name" : "George Best",
-    "phone" : "9482442",
+    "phone" : "94824422",
     "email" : "[email protected]",
     "address" : "4th street",
     "roles" : [ ],

src/test/java/seedu/address/logic/parser/ParserUtilTest.java

@@ -28,7 +28,7 @@ public class ParserUtilTest {
     private static final String INVALID_ROLE = "#friend";
 
     private static final String VALID_NAME = "Rachel Walker";
-    private static final String VALID_PHONE = "123456";
+    private static final String VALID_PHONE = "12345678";
     private static final String VALID_ADDRESS = "123 Main Street #0505";
     private static final String VALID_EMAIL = "[email protected]";
     private static final String VALID_ROLE_1 = "friend";

src/test/java/seedu/address/model/person/NameContainsKeywordsPredicateTest.java

@@ -69,8 +69,8 @@ public void test_nameDoesNotContainKeywords_returnsFalse() {
         assertFalse(predicate.test(new PersonBuilder().withName("Alice Bob").build()));
 
         // Keywords match phone, email and address, but does not match name
-        predicate = new NameContainsKeywordsPredicate(Arrays.asList("12345", "[email protected]", "Main", "Street"));
-        assertFalse(predicate.test(new PersonBuilder().withName("Alice").withPhone("12345")
+        predicate = new NameContainsKeywordsPredicate(Arrays.asList("12345678", "[email protected]", "Main", "Street"));
+        assertFalse(predicate.test(new PersonBuilder().withName("Alice").withPhone("12345678")
                 .withEmail("[email protected]").withAddress("Main Street").build()));
     }
 

src/test/java/seedu/address/model/person/PhoneTest.java

@@ -27,23 +27,22 @@ public void isValidPhone() {
         // invalid phone numbers
         assertFalse(Phone.isValidPhone("")); // empty string
         assertFalse(Phone.isValidPhone(" ")); // spaces only
-        assertFalse(Phone.isValidPhone("91")); // less than 3 numbers
+        assertFalse(Phone.isValidPhone("9190137")); // less than 38 numbers
         assertFalse(Phone.isValidPhone("phone")); // non-numeric
         assertFalse(Phone.isValidPhone("9011p041")); // alphabets within digits
         assertFalse(Phone.isValidPhone("9312 1534")); // spaces within digits
+        assertFalse(Phone.isValidPhone("17803682394326478")); // More than 8 number
 
         // valid phone numbers
-        assertTrue(Phone.isValidPhone("911")); // exactly 3 numbers
-        assertTrue(Phone.isValidPhone("93121534"));
-        assertTrue(Phone.isValidPhone("124293842033123")); // long phone numbers
+        assertTrue(Phone.isValidPhone("93121534")); // exactly 8 numbers
     }
 
     @Test
     public void equals() {
-        Phone phone = new Phone("999");
+        Phone phone = new Phone("99171577");
 
         // same values -> returns true
-        assertTrue(phone.equals(new Phone("999")));
+        assertTrue(phone.equals(new Phone("99171577")));
 
         // same object -> returns true
         assertTrue(phone.equals(phone));
@@ -55,6 +54,6 @@ public void equals() {
         assertFalse(phone.equals(5.0f));
 
         // different values -> returns false
-        assertFalse(phone.equals(new Phone("995")));
+        assertFalse(phone.equals(new Phone("99580770")));
     }
 }

src/test/java/seedu/address/testutil/TypicalPersons.java

@@ -56,23 +56,23 @@ public class TypicalPersons {
             .withAtt("0")
             .withSess("1")
             .withMetadata("I like to play basketball.").build();
-    public static final Person ELLE = new PersonBuilder().withName("Elle Meyer").withPhone("9482224")
+    public static final Person ELLE = new PersonBuilder().withName("Elle Meyer").withPhone("94822242")
             .withEmail("[email protected]").withAddress("michegan ave").withMetadata("I support Manchester United.")
             .build();
-    public static final Person FIONA = new PersonBuilder().withName("Fiona Kunz").withPhone("9482427")
+    public static final Person FIONA = new PersonBuilder().withName("Fiona Kunz").withPhone("94824272")
             .withEmail("[email protected]").withAddress("little tokyo")
             .withAmount("50.00")
             .withAtt("0")
             .withSess("1")
             .withMetadata("I support Manchester United.").build();
-    public static final Person GEORGE = new PersonBuilder().withName("George Best").withPhone("9482442")
+    public static final Person GEORGE = new PersonBuilder().withName("George Best").withPhone("94824422")
             .withEmail("[email protected]").withAddress("4th street").withMetadata("I support Manchester United.")
             .build();
 
     // Manually added
-    public static final Person HOON = new PersonBuilder().withName("Hoon Meier").withPhone("8482424")
+    public static final Person HOON = new PersonBuilder().withName("Hoon Meier").withPhone("84824242")
             .withEmail("[email protected]").withAddress("little india").build();
-    public static final Person IDA = new PersonBuilder().withName("Ida Mueller").withPhone("8482131")
+    public static final Person IDA = new PersonBuilder().withName("Ida Mueller").withPhone("84821312")
             .withEmail("[email protected]").withAddress("chicago ave").build();
 
     // Manually added - Person's details found in {@code CommandTestUtil}