'Ensure fields with \'source\' applied do get still get model validation.'

def test_renamed_fields_are_model_validated(self):

    serializer = ShouldValidateModelSerializer(data={u'renamed': u''})
    assert (serializer.is_valid() is False)
    assert (u'renamed' in serializer.errors)
    assert (u'should_validate_field' not in serializer.errors)
