async def test_default_options(test_client):
headers = {hdrs.ACCESS_CONTROL_REQUEST_HEADERS: hdrs.AUTHORIZATION}
request = make_request('OPTIONS', '/', headers=headers)
router = TreeUrlDispatcher()
mi = await router.resolve(request)
assert isinstance(mi, MatchInfoError)
app = web.Application(router=router)
router.set_cors(app)
router.add_get('/', lambda request: web.Response())
mi = await router.resolve(request)
assert not isinstance(mi, MatchInfoError)
client = await test_client(app)
response = await client.options('/', headers=headers)
assert response.status == 200
h = response.headers
assert h[hdrs.ACCESS_CONTROL_ALLOW_ORIGIN] == '*'
assert h[hdrs.ACCESS_CONTROL_ALLOW_METHODS] == 'GET'
assert h[hdrs.ACCESS_CONTROL_ALLOW_HEADERS] == hdrs.AUTHORIZATION
