Update AddPersonCommandTest.java

Author: jellymias

src/test/java/seedu/address/logic/commands/AddPersonCommandTest.java

@@ -20,6 +20,7 @@
 import seedu.address.model.Model;
 import seedu.address.model.ReadOnlyAddressBook;
 import seedu.address.model.ReadOnlyUserPrefs;
+import seedu.address.model.module.Assignment;
 import seedu.address.model.person.Person;
 import seedu.address.testutil.PersonBuilder;
 
@@ -148,6 +149,16 @@ public ObservableList<Person> getFilteredPersonList() {
         public void updateFilteredPersonList(Predicate<Person> predicate) {
             throw new AssertionError("This method should not be called.");
         }
+
+        @Override
+        public boolean hasAssignment(Assignment assignment) {
+            throw new AssertionError("This method should not be called.");
+        }
+
+        @Override
+        public void addAssignment(Assignment assignment) {
+            throw new AssertionError("This method should not be called.");
+        }
     }
 
     /**