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import asyncio
import concurrent.futures
import threading
from wsgiref.validate import validator
from tornado.routing import RuleRouter
from tornado.testing import AsyncHTTPTestCase, gen_test
from tornado.wsgi import WSGIContainer
class WSGIAppMixin:
# TODO: Now that WSGIAdapter is gone, this is a pretty weak test.
def get_executor(self):
raise NotImplementedError()
def get_app(self):
executor = self.get_executor()
# The barrier test in DummyExecutorTest will always wait the full
# value of this timeout, so we don't want it to be too high.
self.barrier = threading.Barrier(2, timeout=0.3)
def make_container(app):
return WSGIContainer(validator(app), executor=executor)
return RuleRouter(
[
("/simple", make_container(self.simple_wsgi_app)),
("/barrier", make_container(self.barrier_wsgi_app)),
("/streaming_barrier", make_container(self.streaming_barrier_wsgi_app)),
]
)
def respond_plain(self, start_response):
status = "200 OK"
response_headers = [("Content-Type", "text/plain")]
start_response(status, response_headers)
def simple_wsgi_app(self, environ, start_response):
self.respond_plain(start_response)
return [b"Hello world!"]
def barrier_wsgi_app(self, environ, start_response):
self.respond_plain(start_response)
try:
n = self.barrier.wait()
except threading.BrokenBarrierError:
return [b"broken barrier"]
else:
return [b"ok %d" % n]
def streaming_barrier_wsgi_app(self, environ, start_response):
self.respond_plain(start_response)
yield b"ok "
try:
n = self.barrier.wait()
except threading.BrokenBarrierError:
yield b"broken barrier"
else:
yield b"%d" % n
class WSGIContainerDummyExecutorTest(WSGIAppMixin, AsyncHTTPTestCase):
def get_executor(self):
return None
def test_simple(self):
response = self.fetch("/simple")
self.assertEqual(response.body, b"Hello world!")
@gen_test
async def test_concurrent_barrier(self):
self.barrier.reset()
resps = await asyncio.gather(
self.http_client.fetch(self.get_url("/barrier")),
self.http_client.fetch(self.get_url("/barrier")),
)
for resp in resps:
self.assertEqual(resp.body, b"broken barrier")
@gen_test
async def test_concurrent_streaming_barrier(self):
self.barrier.reset()
resps = await asyncio.gather(
self.http_client.fetch(self.get_url("/streaming_barrier")),
self.http_client.fetch(self.get_url("/streaming_barrier")),
)
for resp in resps:
self.assertEqual(resp.body, b"ok broken barrier")
class WSGIContainerThreadPoolTest(WSGIAppMixin, AsyncHTTPTestCase):
def get_executor(self):
return concurrent.futures.ThreadPoolExecutor()
def test_simple(self):
response = self.fetch("/simple")
self.assertEqual(response.body, b"Hello world!")
@gen_test
async def test_concurrent_barrier(self):
self.barrier.reset()
resps = await asyncio.gather(
self.http_client.fetch(self.get_url("/barrier")),
self.http_client.fetch(self.get_url("/barrier")),
)
self.assertEqual([b"ok 0", b"ok 1"], sorted([resp.body for resp in resps]))
@gen_test
async def test_concurrent_streaming_barrier(self):
self.barrier.reset()
resps = await asyncio.gather(
self.http_client.fetch(self.get_url("/streaming_barrier")),
self.http_client.fetch(self.get_url("/streaming_barrier")),
)
self.assertEqual([b"ok 0", b"ok 1"], sorted([resp.body for resp in resps]))
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