def test_jsonp():
# Check that response is wrapped in callback
request = MyDummyRequest([b"/"])
request.addArg(b"id", b"1234")
request.addArg(b"callback", b"myCallback")
resource = EchoArgsPage()
yield _render(resource, request)
response_str = b"".join(request.written)
assert response_str.startswith(b"myCallback(")
assert response_str.endswith(b")")
# Reject invalid callback
request = MyDummyRequest(b"/")
evil_callback = b"alert('hi');"
request.addArg(b"id", b"1234")
request.addArg(b"callback", evil_callback)
resource = EchoArgsPage()
yield _render(resource, request)
response_str = b"".join(request.written)
assert evil_callback not in response_str
assert request.responseCode == 400
def test_route_site():
root = Resource()
root.putChild(b"default", HotelPage())
path_site = retwist.RouteSite(root)
# Add a path with named parameters (get stored as dictionary)
path_site.addRoute(r"/hotels/(?P<hotel_id>.*)/info", HotelPage())
# Test that we get the correct request object
request = MyDummyRequest([b"hotels", b"1234", b"info"])
resource = path_site.getResourceFor(request)
assert isinstance(resource, HotelPage)
assert request.path_args == {
"hotel_id": "1234"
}
# Test that request rendering receives tha arguments correctly
yield _render(resource, request)
response_str = b"".join(request.written)
assert response_str == b"1234"
# ... now let's add a path with unnamed parameters, which are passed as a tuple
path_site.addRoute(r"/restaurants/(.*)/info", RestaurantPage())
request = MyDummyRequest([b"restaurants", b"5678", b"info"])
resource = path_site.getResourceFor(request)
assert isinstance(resource, RestaurantPage)
assert request.path_args == ("5678",)
# Again, test that rendering works as expected
yield _render(resource, request)
response_str = b"".join(request.written)
assert response_str == b"5678"
# Test the fallback to regular Twisted path resolution
request = MyDummyRequest([b"default"])
resource = path_site.getResourceFor(request)
assert isinstance(resource, HotelPage)
# Test 404
request = MyDummyRequest([b"some", b"nonexistent", b"path"])
resource = path_site.getResourceFor(request)
assert isinstance(resource, NoResource)
def test_error_handling():
"""
Check that exceptions in json_GET result in a 500 response code.
"""
def err_observer(event):
# type: (dict) -> None
assert event["isError"]
failure = event["failure"]
assert isinstance(failure, Failure)
exception = failure.value
assert isinstance(exception, TypeError)
assert event["context"] == {
'data': {},
'headers': {},
'method': b'GET',
'query_string': b'http:dummy/',
'url': b'http://dummy/'
}
err_observer.called = True
log.addObserver(err_observer)
for resource in [SyncBrokenPage(), AsyncBrokenPage()]:
request = MyDummyRequest([b"/"])
err_observer.called = False
yield _render(resource, request)
assert request.responseCode == 500
assert err_observer.called is True, "Error handler not called for {}".format(
type(resource).__name__)
log.removeObserver(err_observer)
def test_param_error():
"""
Test that errors during parsing parameters return a correct error document.
"""
# Will produce error since required "id" is missing
request = MyDummyRequest([b"/"])
resource = EchoArgsPage()
yield _render(resource, request)
assert request.responseCode == 400
response_str = b"".join(request.written)
# Check that the error is valid JSON, that's all we want
json.loads(response_str.decode())
def test_special_character_in_error_msg():
# This triggered a server-side exception in retwist <= 0.4.1
class BrokenPage(retwist.JsonResource):
def json_GET(self, request):
msg = u"This error message contains ümläüts".encode("utf-8")
raise Error(400, msg)
resource = BrokenPage()
request = MyDummyRequest([b"/"])
yield _render(resource, request)
assert request.responseCode == 400
def test_special_character_in_parameter():
# This triggered a server-side exception in retwist <= 0.4.1 for Python 2
request = MyDummyRequest([b"/"])
special_chars = u"Spécial cháracters"
request.addArg(b"id", special_chars.encode("utf-8"))
resource = EchoArgsPage()
yield _render(resource, request)
response_str = b"".join(request.written)
response = json.loads(response_str)
assert response["id"] == special_chars
def test_async_json_resource():
"""
Make sure that asynchronous json_GET methods are supported.
"""
request = MyDummyRequest([b"/"])
resource = AsyncPage()
yield _render(resource, request)
response_str = b"".join(request.written)
response = json.loads(response_str.decode())
assert response == "All working"
def test_json_resource():
"""
Test regular synchronous JSON rendering.
"""
request = MyDummyRequest([b"/"])
request.addArg(b"id", b"1234")
request.addArg(b"show_details", b"false")
resource = EchoArgsPage()
yield _render(resource, request)
response_str = b"".join(request.written)
response = json.loads(response_str.decode())
assert response == {
"id": "1234",
"show_details": False,
}
