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# The MIT License (MIT)
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# t.i.reactor doesn't exist until we've imported it once, but we
# need it to exist so we can @patch it out in the tests ...
from twisted.internet import reactor # noqa
from unittest.mock import patch, Mock
from twisted.internet.defer import inlineCallbacks, succeed
from twisted.trial import unittest
from autobahn.twisted.wamp import ApplicationRunner
[docs]def raise_error(*args, **kw):
raise RuntimeError("we always fail")
[docs]class TestApplicationRunner(unittest.TestCase):
[docs] @patch('twisted.internet.reactor')
def test_runner_default(self, fakereactor):
fakereactor.connectTCP = Mock(side_effect=raise_error)
runner = ApplicationRunner('ws://fake:1234/ws', 'dummy realm')
# we should get "our" RuntimeError when we call run
self.assertRaises(RuntimeError, runner.run, raise_error)
# both reactor.run and reactor.stop should have been called
self.assertEqual(fakereactor.run.call_count, 1)
self.assertEqual(fakereactor.stop.call_count, 1)
[docs] @patch('twisted.internet.reactor')
@inlineCallbacks
def test_runner_no_run(self, fakereactor):
fakereactor.connectTCP = Mock(side_effect=raise_error)
runner = ApplicationRunner('ws://fake:1234/ws', 'dummy realm')
try:
yield runner.run(raise_error, start_reactor=False)
self.fail() # should have raise an exception, via Deferred
except RuntimeError as e:
# make sure it's "our" exception
self.assertEqual(e.args[0], "we always fail")
# neither reactor.run() NOR reactor.stop() should have been called
# (just connectTCP() will have been called)
self.assertEqual(fakereactor.run.call_count, 0)
self.assertEqual(fakereactor.stop.call_count, 0)
[docs] @patch('twisted.internet.reactor')
def test_runner_no_run_happypath(self, fakereactor):
proto = Mock()
fakereactor.connectTCP = Mock(return_value=succeed(proto))
runner = ApplicationRunner('ws://fake:1234/ws', 'dummy realm')
d = runner.run(Mock(), start_reactor=False)
# shouldn't have actually connected to anything
# successfully, and the run() call shouldn't have inserted
# any of its own call/errbacks. (except the cleanup handler)
self.assertFalse(d.called)
self.assertEqual(1, len(d.callbacks))
# neither reactor.run() NOR reactor.stop() should have been called
# (just connectTCP() will have been called)
self.assertEqual(fakereactor.run.call_count, 0)
self.assertEqual(fakereactor.stop.call_count, 0)
[docs] @patch('twisted.internet.reactor')
def test_runner_bad_proxy(self, fakereactor):
proxy = 'myproxy'
self.assertRaises(
AssertionError,
ApplicationRunner,
'ws://fake:1234/ws', 'dummy realm',
proxy=proxy
)
[docs] @patch('twisted.internet.reactor')
def test_runner_proxy(self, fakereactor):
proto = Mock()
fakereactor.connectTCP = Mock(return_value=succeed(proto))
proxy = {'host': 'myproxy', 'port': 3128}
runner = ApplicationRunner('ws://fake:1234/ws', 'dummy realm', proxy=proxy)
d = runner.run(Mock(), start_reactor=False)
# shouldn't have actually connected to anything
# successfully, and the run() call shouldn't have inserted
# any of its own call/errbacks. (except the cleanup handler)
self.assertFalse(d.called)
self.assertEqual(1, len(d.callbacks))
# neither reactor.run() NOR reactor.stop() should have been called
# (just connectTCP() will have been called)
self.assertEqual(fakereactor.run.call_count, 0)
self.assertEqual(fakereactor.stop.call_count, 0)