class ReactorTestCase(unittest.TestCase):
def setUp(self):
self._saved_signals = save_signal_handlers()
self._io_loop = IOLoop()
self._reactor = TornadoReactor(self._io_loop)
def tearDown(self):
self._io_loop.close(all_fds=True)
restore_signal_handlers(self._saved_signals)
def test_add_callback_from_signal_other_thread(self):
# Very crude test, just to make sure that we cover this case.
# This also happens to be the first test where we run an IOLoop in
# a non-main thread.
other_ioloop = IOLoop()
thread = threading.Thread(target=other_ioloop.start)
thread.start()
other_ioloop.add_callback_from_signal(other_ioloop.stop)
thread.join()
other_ioloop.close()
class TestIOLoopCurrent(unittest.TestCase):
def setUp(self):
self.io_loop = IOLoop()
def tearDown(self):
self.io_loop.close()
def test_current(self):
def f():
self.current_io_loop = IOLoop.current()
self.io_loop.stop()
self.io_loop.add_callback(f)
self.io_loop.start()
self.assertIs(self.current_io_loop, self.io_loop)
class SyncHTTPClientTest(unittest.TestCase):
def setUp(self):
if IOLoop.configured_class().__name__ in ('TwistedIOLoop',
'AsyncIOMainLoop'):
# TwistedIOLoop only supports the global reactor, so we can't have
# separate IOLoops for client and server threads.
# AsyncIOMainLoop doesn't work with the default policy
# (although it could with some tweaks to this test and a
# policy that created loops for non-main threads).
raise unittest.SkipTest(
'Sync HTTPClient not compatible with TwistedIOLoop or '
'AsyncIOMainLoop')
self.server_ioloop = IOLoop()
sock, self.port = bind_unused_port()
app = Application([('/', HelloWorldHandler)])
self.server = HTTPServer(app, io_loop=self.server_ioloop)
self.server.add_socket(sock)
self.server_thread = threading.Thread(target=self.server_ioloop.start)
self.server_thread.start()
self.http_client = HTTPClient()
def tearDown(self):
def stop_server():
self.server.stop()
self.server_ioloop.stop()
self.server_ioloop.add_callback(stop_server)
self.server_thread.join()
self.http_client.close()
self.server_ioloop.close(all_fds=True)
def get_url(self, path):
return 'http://localhost:%d%s' % (self.port, path)
def test_sync_client(self):
response = self.http_client.fetch(self.get_url('/'))
self.assertEqual(b'Hello world!', response.body)
def test_sync_client_error(self):
# Synchronous HTTPClient raises errors directly; no need for
# response.rethrow()
with self.assertRaises(HTTPError) as assertion:
self.http_client.fetch(self.get_url('/notfound'))
self.assertEqual(assertion.exception.code, 404)
class HTTPClient(object):
"""A blocking HTTP client.
This interface is provided for convenience and testing; most applications
that are running an IOLoop will want to use `AsyncHTTPClient` instead.
Typical usage looks like this::
http_client = httpclient.HTTPClient()
try:
response = http_client.fetch("http://www.google.com/")
print response.body
except httpclient.HTTPError as e:
print "Error:", e
http_client.close()
"""
def __init__(self, async_client_class=None, **kwargs):
self._io_loop = IOLoop()
if async_client_class is None:
async_client_class = AsyncHTTPClient
self._async_client = async_client_class(self._io_loop, **kwargs)
self._closed = False
def __del__(self):
self.close()
def close(self):
"""Closes the HTTPClient, freeing any resources used."""
if not self._closed:
self._async_client.close()
self._io_loop.close()
self._closed = True
def fetch(self, request, **kwargs):
"""Executes a request, returning an `HTTPResponse`.
The request may be either a string URL or an `HTTPRequest` object.
If it is a string, we construct an `HTTPRequest` using any additional
kwargs: ``HTTPRequest(request, **kwargs)``
If an error occurs during the fetch, we raise an `HTTPError`.
"""
response = self._io_loop.run_sync(functools.partial(
self._async_client.fetch, request, **kwargs))
response.rethrow()
return response
class TestIOLoopRunSync(unittest.TestCase):
def setUp(self):
self.io_loop = IOLoop()
def tearDown(self):
self.io_loop.close()
def test_sync_result(self):
self.assertEqual(self.io_loop.run_sync(lambda: 42), 42)
def test_sync_exception(self):
with self.assertRaises(ZeroDivisionError):
self.io_loop.run_sync(lambda: 1 / 0)
def test_async_result(self):
@gen.coroutine
def f():
yield gen.Task(self.io_loop.add_callback)
raise gen.Return(42)
self.assertEqual(self.io_loop.run_sync(f), 42)
def test_async_exception(self):
@gen.coroutine
def f():
yield gen.Task(self.io_loop.add_callback)
1 / 0
with self.assertRaises(ZeroDivisionError):
self.io_loop.run_sync(f)
def test_current(self):
def f():
self.assertIs(IOLoop.current(), self.io_loop)
self.io_loop.run_sync(f)
def test_timeout(self):
@gen.coroutine
def f():
yield gen.Task(self.io_loop.add_timeout, self.io_loop.time() + 1)
self.assertRaises(TimeoutError, self.io_loop.run_sync, f, timeout=0.01)
class CompatibilityTests(unittest.TestCase):
def setUp(self):
self.saved_signals = save_signal_handlers()
self.io_loop = IOLoop()
self.io_loop.make_current()
self.reactor = TornadoReactor(self.io_loop)
def tearDown(self):
self.reactor.disconnectAll()
self.io_loop.clear_current()
self.io_loop.close(all_fds=True)
restore_signal_handlers(self.saved_signals)
def start_twisted_server(self):
class HelloResource(Resource):
isLeaf = True
def render_GET(self, request):
return "Hello from twisted!"
site = Site(HelloResource())
port = self.reactor.listenTCP(0, site, interface='127.0.0.1')
self.twisted_port = port.getHost().port
def start_tornado_server(self):
class HelloHandler(RequestHandler):
def get(self):
self.write("Hello from webalchemy.tornado!")
app = Application([('/', HelloHandler)],
log_function=lambda x: None)
server = HTTPServer(app, io_loop=self.io_loop)
sock, self.tornado_port = bind_unused_port()
server.add_sockets([sock])
def run_ioloop(self):
self.stop_loop = self.io_loop.stop
self.io_loop.start()
self.reactor.fireSystemEvent('shutdown')
def run_reactor(self):
self.stop_loop = self.reactor.stop
self.stop = self.reactor.stop
self.reactor.run()
def tornado_fetch(self, url, runner):
responses = []
client = AsyncHTTPClient(self.io_loop)
def callback(response):
responses.append(response)
self.stop_loop()
client.fetch(url, callback=callback)
runner()
self.assertEqual(len(responses), 1)
responses[0].rethrow()
return responses[0]
def twisted_fetch(self, url, runner):
# http://twistedmatrix.com/documents/current/web/howto/client.html
chunks = []
client = Agent(self.reactor)
d = client.request('GET', url)
class Accumulator(Protocol):
def __init__(self, finished):
self.finished = finished
def dataReceived(self, data):
chunks.append(data)
def connectionLost(self, reason):
self.finished.callback(None)
def callback(response):
finished = Deferred()
response.deliverBody(Accumulator(finished))
return finished
d.addCallback(callback)
def shutdown(ignored):
self.stop_loop()
d.addBoth(shutdown)
runner()
self.assertTrue(chunks)
return ''.join(chunks)
def testTwistedServerTornadoClientIOLoop(self):
self.start_twisted_server()
response = self.tornado_fetch(
'http://localhost:%d' % self.twisted_port, self.run_ioloop)
self.assertEqual(response.body, 'Hello from twisted!')
def testTwistedServerTornadoClientReactor(self):
self.start_twisted_server()
response = self.tornado_fetch(
'http://localhost:%d' % self.twisted_port, self.run_reactor)
self.assertEqual(response.body, 'Hello from twisted!')
def testTornadoServerTwistedClientIOLoop(self):
self.start_tornado_server()
response = self.twisted_fetch(
'http://localhost:%d' % self.tornado_port, self.run_ioloop)
self.assertEqual(response, 'Hello from webalchemy.tornado!')
def testTornadoServerTwistedClientReactor(self):
self.start_tornado_server()
response = self.twisted_fetch(
'http://localhost:%d' % self.tornado_port, self.run_reactor)
self.assertEqual(response, 'Hello from webalchemy.tornado!')
