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author | David Garcia Quintas <dgq@google.com> | 2016-07-06 15:34:42 -0700 |
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committer | David Garcia Quintas <dgq@google.com> | 2016-07-06 15:34:42 -0700 |
commit | f2e20c2d8cce4c5b36d2409b19213100b5a81bfb (patch) | |
tree | 8fe794d6813e68e6fa4baebd838a5d4ce63f0a56 /src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py | |
parent | fce332a4c46435537487fb1609b381bb8ea6e585 (diff) | |
parent | 2a16a028e019408e0670b82488458df20298760e (diff) |
Merge branch 'master' of github.com:grpc/grpc into bb_reader_error
Diffstat (limited to 'src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py')
-rw-r--r-- | src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py new file mode 100644 index 0000000000..b84bc0197a --- /dev/null +++ b/src/python/grpcio_tests/tests/unit/_channel_ready_future_test.py @@ -0,0 +1,103 @@ +# Copyright 2015, Google Inc. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following disclaimer +# in the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Google Inc. nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +"""Tests of grpc.channel_ready_future.""" + +import threading +import unittest +from concurrent import futures + +import grpc +from grpc import _channel +from grpc import _server +from tests.unit.framework.common import test_constants + + +class _Callback(object): + + def __init__(self): + self._condition = threading.Condition() + self._value = None + + def accept_value(self, value): + with self._condition: + self._value = value + self._condition.notify_all() + + def block_until_called(self): + with self._condition: + while self._value is None: + self._condition.wait() + return self._value + + +class ChannelReadyFutureTest(unittest.TestCase): + + def test_lonely_channel_connectivity(self): + channel = grpc.insecure_channel('localhost:12345') + callback = _Callback() + + ready_future = grpc.channel_ready_future(channel) + ready_future.add_done_callback(callback.accept_value) + with self.assertRaises(grpc.FutureTimeoutError): + ready_future.result(test_constants.SHORT_TIMEOUT) + self.assertFalse(ready_future.cancelled()) + self.assertFalse(ready_future.done()) + self.assertTrue(ready_future.running()) + ready_future.cancel() + value_passed_to_callback = callback.block_until_called() + self.assertIs(ready_future, value_passed_to_callback) + self.assertTrue(ready_future.cancelled()) + self.assertTrue(ready_future.done()) + self.assertFalse(ready_future.running()) + + def test_immediately_connectable_channel_connectivity(self): + server = _server.Server((), futures.ThreadPoolExecutor(max_workers=0)) + port = server.add_insecure_port('[::]:0') + server.start() + channel = grpc.insecure_channel('localhost:{}'.format(port)) + callback = _Callback() + + ready_future = grpc.channel_ready_future(channel) + ready_future.add_done_callback(callback.accept_value) + self.assertIsNone(ready_future.result(test_constants.SHORT_TIMEOUT)) + value_passed_to_callback = callback.block_until_called() + self.assertIs(ready_future, value_passed_to_callback) + self.assertFalse(ready_future.cancelled()) + self.assertTrue(ready_future.done()) + self.assertFalse(ready_future.running()) + # Cancellation after maturity has no effect. + ready_future.cancel() + self.assertFalse(ready_future.cancelled()) + self.assertTrue(ready_future.done()) + self.assertFalse(ready_future.running()) + + +if __name__ == '__main__': + unittest.main(verbosity=2) |