def test_given_unexpected_class_throws_value_error(self):
"""
Test that instantiating ConfigurationService raises exception on passing
a class which is not subclass of ConfigurationModel.
"""
with self.assertRaises(ValueError):
ConfigurationService(DummyUnexpected)
def test_configuration_service(self):
"""
Test the correct configuration on instantiating ConfigurationService.
"""
config_service = ConfigurationService(DummyConfig)
self.assertEqual(config_service.configuration, DummyConfig)
