+ elif isinstance(expected, compat_str) and expected.startswith('contains:'):
+ got = got_dict.get(info_field)
+ contains_str = expected[len('contains:'):]
+ self.assertTrue(
+ isinstance(got, compat_str),
+ 'Expected a %s object, but got %s for field %s' % (
+ compat_str.__name__, type(got).__name__, info_field))
+ self.assertTrue(
+ contains_str in got,
+ 'field %s (value: %r) should contain %r' % (info_field, got, contains_str))