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import pytest
import threading
import random
import logging
from contextlib import contextmanager
from wsgiref.simple_server import make_server
from wsgiref.simple_server import WSGIRequestHandler
from wsgiref.simple_server import WSGIServer
from wsgiref.simple_server import ServerHandler
log = logging.getLogger(__name__)
ServerHandler.handle_error = lambda: None
class QuietHandler(WSGIRequestHandler):
def log_request(self, *args):
pass
class QuietServer(WSGIServer):
def handle_error(self, req, addr):
pass
def _make_test_server(app):
maxport = (1 << 16) - 1
# we'll make 3 attempts to find a free port
for i in range(3, 0, -1):
try:
port = random.randint(maxport // 2, maxport)
server = make_server(
"localhost",
port,
app,
server_class=QuietServer,
handler_class=QuietHandler,
)
server.timeout = 5
return server
except BaseException:
if i == 1:
raise
@pytest.fixture
def serve():
@contextmanager
def _serve(app):
server = _make_test_server(app)
try:
worker = threading.Thread(target=server.serve_forever)
worker.setDaemon(True)
worker.start()
server.url = "http://localhost:%d" % server.server_port
log.debug("server started on %s", server.url)
yield server
finally:
log.debug("shutting server down")
server.shutdown()
worker.join(1)
if worker.isAlive():
log.warning("worker is hanged")
else:
log.debug("server stopped")
return _serve
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