def test_coerce_nullstring_to_none_success(self):
subjects = ["", six.b("")]
for subject in subjects:
res = translators.coerce_nullstring_to_none(subject)
self.assertIsNone(res)
subjects = ["this", six.b("this")]
expected = ["this", six.b("this")]
for subject, expected in zip(subjects, expected):
res = translators.coerce_nullstring_to_none(subject)
msg = "Failed to coerce %r to %r. Got %r instead."
msg = msg % (subject, expected, res)
self.assertEqual(expected, res, msg)
def test_coerce_nullstring_to_none_failure(self):
subjects = [123, 0, 456.78, object, [], {}]
for subject in subjects:
with testtools.ExpectedException(ValueError):
translators.coerce_nullstring_to_none(subject)
