class MethodMessageSerializerTestCase(unittest.TestCase): def setUp(self): self.serializer = MethodMessageSerializer() def test_serialize(self): id = 'id' method = 'method' params = ['params'] message = MethodMessage(id, method, params) actual = self.serializer.serialize(message) expected = {'msg': 'method', 'id': id, 'method': method, 'params': params} self.assertEqual(actual, expected)