def tester(request):
"""Tester fixture."""
class Handler(RequestHandler):
def get(self):
self.write('Hello')
app = Application([url('/hello', Handler)])
tester = Tester(app)
tester.setup()
request.addfinalizer(tester.teardown)
return tester
def test_reuse():
"""Tester is not reusable."""
class Handler(RequestHandler):
def get(self):
self.write('Hello')
app = Application([url('/hello', Handler)])
tester = Tester(app)
with tester:
response = yield tester.http_client.fetch(tester.url_for('/hello'))
assert 'Hello' == text_body(response)
with pytest.raises(RuntimeError):
tester.setup()
def test_another_loop():
"""We can handle only one I/O loop per test."""
class Handler(RequestHandler):
def get(self):
self.write('Hello')
app = Application([url('/hello', Handler)])
tester1 = Tester(app)
with tester1:
response = yield tester1.http_client.fetch(
tester1.url_for('/hello'))
assert 'Hello' == text_body(response)
tester2 = Tester(app)
with tester2:
with pytest.raises(RuntimeError):
yield tester2.http_client.fetch(
tester2.url_for('/hello'))
def test_shared_loop():
"""But, we can use same I/O loop in multiple testers."""
class Handler(RequestHandler):
def get(self):
self.write('Hello')
app = Application([url('/hello', Handler)])
io_loop = tornado.ioloop.IOLoop()
tester1 = Tester(app, io_loop=io_loop)
with tester1:
response = yield tester1.http_client.fetch(
tester1.url_for('/hello'))
assert 'Hello' == text_body(response)
tester2 = Tester(app, io_loop=io_loop)
with tester2:
response = yield tester2.http_client.fetch(
tester2.url_for('/hello'))
assert 'Hello' == text_body(response)
def test_fixture(tester: Tester):
"""Test tester fixture."""
response = yield tester.http_client.fetch(tester.url_for('/hello'))
assert 'Hello' == text_body(response)