# coding: utf-8 # Copyright 2017 Elisey Zanko # # 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. import unittest from tenacity import RetryError, retry, stop_after_attempt from tenacity import tornadoweb from tenacity.tests.test_tenacity import NoIOErrorAfterCount from tornado import gen from tornado import testing @retry @gen.coroutine def _retryable_coroutine(thing): yield gen.sleep(0.00001) thing.go() @retry(stop=stop_after_attempt(2)) @gen.coroutine def _retryable_coroutine_with_2_attempts(thing): yield gen.sleep(0.00001) thing.go() class TestTornado(testing.AsyncTestCase): @testing.gen_test def test_retry(self): assert gen.is_coroutine_function(_retryable_coroutine) thing = NoIOErrorAfterCount(5) yield _retryable_coroutine(thing) assert thing.counter == thing.count @testing.gen_test def test_stop_after_attempt(self): assert gen.is_coroutine_function(_retryable_coroutine) thing = NoIOErrorAfterCount(2) try: yield _retryable_coroutine_with_2_attempts(thing) except RetryError: assert thing.counter == 2 def test_repr(self): repr(tornadoweb.TornadoRetrying()) def test_old_tornado(self): old_attr = gen.is_coroutine_function try: del gen.is_coroutine_function # is_coroutine_function was introduced in tornado 4.5; # verify that we don't *completely* fall over on old versions @retry def retryable(thing): pass finally: gen.is_coroutine_function = old_attr if __name__ == '__main__': unittest.main()