def test_list_for_correct_index_of_none(self):
test_class = ClassList(3)
test_class.add_student('Larry')
test_class.add_student('Curly')
test_class.add_student('Moe')
self.assertEqual(None, test_class.index_of_student('Harry'))
self.assertEqual(None, test_class.index_of_student('Hermione'))
self.assertEqual(None, test_class.index_of_student('Ron'))
self.assertIsNone(test_class.index_of_student('Mike'))
def test_index_of_student_student_present(self):
test_class = ClassList(3)
test_class.add_student('Harry')
test_class.add_student('Hermione')
test_class.add_student('Ron')
self.assertEqual(1, test_class.index_of_student('Harry'))
self.assertEqual(2, test_class.index_of_student('Hermione'))
self.assertEqual(3, test_class.index_of_student('Ron'))
# This assert passes, but it's redundant - the first assert statement will fail if
# the method call returns None
self.assertIsNotNone(test_class.index_of_student('Harry'))
def test_index_of_student_returns_none_on_empty_list(self):
test_class = ClassList(3)
self.assertIsNone(test_class.index_of_student('Mike'))
def test_index_of_student_when_list_is_not_empty(self):
test_class = ClassList(2)
test_class.add_student('Student Number1')
test_class.add_student('Student Number2')
self.assertIsNone(test_class.index_of_student('Student Number3'))
def test_index_of_student_is_none_if_classlist_is_empty(self):
test_class = ClassList(2)
index = test_class.index_of_student('Test Student')
self.assertIsNone(index)