def test_get_old_filename(self):
parts = git_diff.get_parts(SAMPLE_DIFF)
old_filename = git_diff.get_old_filename(parts[0])
self.assertEqual(old_filename, 'group_vars/foo')
def test_get_old_filename_for_added_file(self):
parts = git_diff.get_parts(ADDED_FILE_DIFF)
old_filename = git_diff.get_old_filename(parts[0])
self.assertEqual(old_filename, '/dev/null')
