tobiko/tobiko/tests/unit/test_proxy.py

85 lines
2.8 KiB
Python

# Copyright 2021 Red Hat
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import absolute_import
import inspect
import typing
from unittest import mock
import tobiko
from tobiko.tests import unit
@tobiko.protocol
class MyProto:
# pylint: disable=unused-argument
def call_one(self, arg='a') -> int:
return 42
def call_two(self, *args) -> int:
return 42
def call_three(self, **kwargs) -> int:
return 42
class MyProtoHandler(tobiko.CallHandler):
protocol_class = MyProto
class ProxyTest(unit.TobikoUnitTest):
def handle_call(self, method: typing.Callable, *_args, **_kwargs):
self.assertTrue(inspect.isfunction(method))
def mock_handler(self) -> typing.Callable:
return typing.cast(typing.Callable,
mock.MagicMock(side_effect=self.handle_call))
def test_call_handler(self):
handler = self.mock_handler()
proxy = MyProtoHandler(handler).use_as(MyProto)
self.assertIsInstance(proxy, MyProto)
self.assertTrue(callable(proxy.call_one))
self.assertEqual(inspect.signature(MyProto.call_one),
inspect.signature(type(proxy).call_one))
self.assertIsNot(MyProto.call_one,
proxy.call_one)
proxy.call_one()
handler.assert_called_with(MyProto.call_one, 'a')
def test_call_proxy(self):
handler = self.mock_handler()
proxy = tobiko.call_proxy(MyProto, handler).use_as(MyProto)
self.assertIsInstance(proxy, MyProto)
self.assertTrue(callable(proxy.call_one))
self.assertEqual(inspect.signature(MyProto.call_one),
inspect.signature(type(proxy).call_one))
self.assertIsNot(MyProto.call_one,
proxy.call_one)
proxy.call_one()
handler.assert_called_with(MyProto.call_one, 'a')
proxy.call_one('b')
handler.assert_called_with(MyProto.call_one, 'b')
proxy.call_one(arg='c')
handler.assert_called_with(MyProto.call_one, 'c')
proxy.call_two(1, 2, 3)
handler.assert_called_with(MyProto.call_two, 1, 2, 3)
proxy.call_three(a='a', b='b')
handler.assert_called_with(MyProto.call_three, a='a', b='b')