65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
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# Author: Ovidiu Predescu
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# Date: July 2011
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import unittest
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from tornado.testing import AsyncTestCase, gen_test
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try:
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from twisted.internet.defer import ( # type: ignore
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inlineCallbacks,
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returnValue,
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)
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have_twisted = True
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except ImportError:
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have_twisted = False
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else:
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# Not used directly but needed for `yield deferred` to work.
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import tornado.platform.twisted # noqa: F401
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skipIfNoTwisted = unittest.skipUnless(have_twisted, "twisted module not present")
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@skipIfNoTwisted
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class ConvertDeferredTest(AsyncTestCase):
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@gen_test
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def test_success(self):
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@inlineCallbacks
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def fn():
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if False:
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# inlineCallbacks doesn't work with regular functions;
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# must have a yield even if it's unreachable.
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yield
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returnValue(42)
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res = yield fn()
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self.assertEqual(res, 42)
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@gen_test
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def test_failure(self):
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@inlineCallbacks
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def fn():
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if False:
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yield
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1 / 0
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with self.assertRaises(ZeroDivisionError):
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yield fn()
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if __name__ == "__main__":
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unittest.main()
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