def test_null_untranscribed_morph_tier_method_empty_string(self):
"""Test null_untranscribed_morph_tier with empty string."""
actual_output = CreeCleaner.null_untranscribed_morph_tier('')
desired_output = ''
self.assertEqual(actual_output, desired_output)
def test_null_untranscribed_morph_tier_method_standard_case(self):
"""Test null_untranscribed_morph_tier with standard case (*)."""
actual_output = CreeCleaner.null_untranscribed_morph_tier('*')
desired_output = ''
self.assertEqual(actual_output, desired_output)