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# Copyright 2019 The gRPC Authors. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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"""Tests behavior of the connectivity state.""" |
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import logging |
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import threading |
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import unittest |
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import time |
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import grpc |
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from grpc.experimental import aio |
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from src.proto.grpc.testing import messages_pb2 |
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from src.proto.grpc.testing import test_pb2_grpc |
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from tests.unit.framework.common import test_constants |
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from tests_aio.unit._test_server import start_test_server |
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from tests_aio.unit._test_base import AioTestBase |
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_INVALID_BACKEND_ADDRESS = '0.0.0.1:2' |
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class TestChannel(AioTestBase): |
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async def setUp(self): |
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self._server_address, self._server = await start_test_server() |
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async def tearDown(self): |
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await self._server.stop(None) |
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async def test_unavailable_backend(self): |
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channel = aio.insecure_channel(_INVALID_BACKEND_ADDRESS) |
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self.assertEqual(grpc.ChannelConnectivity.IDLE, |
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channel.check_connectivity_state(False)) |
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self.assertEqual(grpc.ChannelConnectivity.IDLE, |
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channel.check_connectivity_state(True)) |
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self.assertEqual( |
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grpc.ChannelConnectivity.CONNECTING, await |
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channel.watch_connectivity_state(grpc.ChannelConnectivity.IDLE)) |
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self.assertEqual( |
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grpc.ChannelConnectivity.TRANSIENT_FAILURE, await |
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channel.watch_connectivity_state(grpc.ChannelConnectivity.CONNECTING |
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)) |
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await channel.close() |
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async def test_normal_backend(self): |
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channel = aio.insecure_channel(self._server_address) |
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current_state = channel.check_connectivity_state(True) |
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self.assertEqual(grpc.ChannelConnectivity.IDLE, current_state) |
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deadline = time.time() + test_constants.SHORT_TIMEOUT |
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while current_state != grpc.ChannelConnectivity.READY: |
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current_state = await channel.watch_connectivity_state( |
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current_state, deadline - time.time()) |
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self.assertIsNotNone(current_state) |
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await channel.close() |
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async def test_timeout(self): |
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channel = aio.insecure_channel(self._server_address) |
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self.assertEqual(grpc.ChannelConnectivity.IDLE, |
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channel.check_connectivity_state(False)) |
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# If timed out, the function should return None. |
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self.assertIsNone(await channel.watch_connectivity_state( |
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grpc.ChannelConnectivity.IDLE, test_constants.SHORT_TIMEOUT)) |
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await channel.close() |
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async def test_shutdown(self): |
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channel = aio.insecure_channel(self._server_address) |
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self.assertEqual(grpc.ChannelConnectivity.IDLE, |
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channel.check_connectivity_state(False)) |
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await channel.close() |
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self.assertEqual(grpc.ChannelConnectivity.SHUTDOWN, |
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channel.check_connectivity_state(False)) |
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if __name__ == '__main__': |
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logging.basicConfig(level=logging.DEBUG) |
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unittest.main(verbosity=2) |
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