def test_song_validate_argument_raises_exception_if_argument_type_not_str(
self):
test = 5
exc = None
try:
Song.validate_argument(test)
except Exception as err:
exc = err
self.assertIsNotNone(exc)
self.assertEqual(str(exc), 'All arguments must be of "str" type.')
def test_song_validate_argument_raises_exception_if_argument_is_empty_string(
self):
test = ''
exc = None
try:
Song.validate_argument(test)
except Exception as err:
exc = err
self.assertIsNotNone(exc)
self.assertEqual(str(exc), 'Empty string cannot be an argument.')
def test_song_validate_argument_passes_with_correct_input(self):
test = 'Test'
Song.validate_argument(test)
