Modify validation of names and related tests

src/main/java/seedu/address/model/patient/Name.java

@@ -10,13 +10,14 @@
 public class Name {
 
     public static final String MESSAGE_CONSTRAINTS =
-            "Names should only contain alphanumeric characters and spaces, and it should not be blank";
+            "Names should not be blank, and can only contain letters or a special character (space, "
+                    + "slash \nor dash) surrounded by letters.";
 
     /*
      * The first character of the address must not be a whitespace,
      * otherwise " " (a blank string) becomes a valid input.
      */
-    public static final String VALIDATION_REGEX = "[\\p{Alnum}][\\p{Alnum} ]*";
+    public static final String VALIDATION_REGEX = "[A-Za-z](([ -/\\\\][A-Za-z])|[A-Za-z])*";
 
     public final String fullName;
 

src/test/java/seedu/address/model/patient/NameTest.java

@@ -27,15 +27,14 @@ public void isValidName() {
         // invalid name
         assertFalse(Name.isValidName("")); // empty string
         assertFalse(Name.isValidName(" ")); // spaces only
-        assertFalse(Name.isValidName("^")); // only non-alphanumeric characters
-        assertFalse(Name.isValidName("peter*")); // contains non-alphanumeric characters
+        assertFalse(Name.isValidName("^")); // only non-alphabets
+        assertFalse(Name.isValidName("peter*")); // contains disallowed character
 
         // valid name
         assertTrue(Name.isValidName("peter jack")); // alphabets only
-        assertTrue(Name.isValidName("12345")); // numbers only
-        assertTrue(Name.isValidName("peter the 2nd")); // alphanumeric characters
+        assertTrue(Name.isValidName("peter-jack")); // - between alphabets
         assertTrue(Name.isValidName("Capital Tan")); // with capital letters
-        assertTrue(Name.isValidName("David Roger Jackson Ray Jr 2nd")); // long names
+        assertTrue(Name.isValidName("David Roger Jackson Ray Jr The Almighty")); // long names
     }
 
     @Test

src/test/java/seedu/address/model/patient/PatientTest.java

@@ -38,11 +38,6 @@ public void isSamePerson() {
         // name differs in case, all other attributes same -> returns false
         Patient editedBob = new PatientBuilder(BOB).withName(VALID_NAME_BOB.toLowerCase()).build();
         assertFalse(BOB.isSamePatient(editedBob));
-
-        // name has trailing spaces, all other attributes same -> returns false
-        String nameWithTrailingSpaces = VALID_NAME_BOB + " ";
-        editedBob = new PatientBuilder(BOB).withName(nameWithTrailingSpaces).build();
-        assertFalse(BOB.isSamePatient(editedBob));
     }
 
     @Test