Increase testing coverage for ASGI

Beautify

.coveragerc

@@ -5,3 +5,11 @@ omit = site-packages, sanic/utils.py, sanic/__main__.py
 
 [html]
 directory = coverage
+
+[report]
+exclude_lines =
+    no cov
+    no qa
+    noqa
+    NOQA
+    pragma: no cover

sanic/asgi.py

@@ -88,7 +88,7 @@ class MockTransport:
         self._websocket_connection = WebSocketConnection(send, receive)
         return self._websocket_connection
 
-    def add_task(self) -> None:
+    def add_task(self) -> None:  # noqa
         raise NotImplementedError
 
     async def send(self, data) -> None:
@@ -119,15 +119,15 @@ class Lifespan:
                 "the ASGI server is stopped."
             )
 
-    async def pre_startup(self) -> None:
-        for handler in self.asgi_app.sanic_app.listeners[
-            "before_server_start"
-        ]:
-            response = handler(
-                self.asgi_app.sanic_app, self.asgi_app.sanic_app.loop
-            )
-            if isawaitable(response):
-                await response
+    # async def pre_startup(self) -> None:
+    #     for handler in self.asgi_app.sanic_app.listeners[
+    #         "before_server_start"
+    #     ]:
+    #         response = handler(
+    #             self.asgi_app.sanic_app, self.asgi_app.sanic_app.loop
+    #         )
+    #         if isawaitable(response):
+    #             await response
 
     async def startup(self) -> None:
         for handler in self.asgi_app.sanic_app.listeners[
@@ -233,7 +233,14 @@ class ASGIApp:
             )
 
             if sanic_app.is_request_stream:
-                instance.request.stream = StreamBuffer()
+                is_stream_handler = sanic_app.router.is_stream_handler(
+                    instance.request
+                )
+                if is_stream_handler:
+                    instance.request.stream = StreamBuffer(
+                        sanic_app.config.REQUEST_BUFFER_QUEUE_SIZE
+                    )
+                    instance.do_stream = True
 
         return instance
 

sanic/testing.py

@@ -136,7 +136,7 @@ class SanicTestClient:
             try:
                 request, response = results
                 return request, response
-            except BaseException:
+            except BaseException:  # noqa
                 raise ValueError(
                     "Request and response object expected, got ({})".format(
                         results
@@ -145,7 +145,7 @@ class SanicTestClient:
         else:
             try:
                 return results[-1]
-            except BaseException:
+            except BaseException:  # noqa
                 raise ValueError(
                     "Request object expected, got ({})".format(results)
                 )
@@ -175,7 +175,7 @@ class SanicTestClient:
         return self._sanic_endpoint_test("websocket", *args, **kwargs)
 
 
-class SanicASGIAdapter(requests.asgi.ASGIAdapter):
+class SanicASGIAdapter(requests.asgi.ASGIAdapter):  # noqa
     async def send(  # type: ignore
         self,
         request: requests.PreparedRequest,
@@ -218,6 +218,30 @@ class SanicASGIAdapter(requests.asgi.ASGIAdapter):
             for key, value in request.headers.items()
         ]
 
+        no_response = False
+        if scheme in {"ws", "wss"}:
+            subprotocol = request.headers.get("sec-websocket-protocol", None)
+            if subprotocol is None:
+                subprotocols = []  # type: typing.Sequence[str]
+            else:
+                subprotocols = [
+                    value.strip() for value in subprotocol.split(",")
+                ]
+
+            scope = {
+                "type": "websocket",
+                "path": unquote(path),
+                "root_path": "",
+                "scheme": scheme,
+                "query_string": query.encode(),
+                "headers": headers,
+                "client": ["testclient", 50000],
+                "server": [host, port],
+                "subprotocols": subprotocols,
+            }
+            no_response = True
+
+        else:
             scope = {
                 "type": "http",
                 "http_version": "1.1",
@@ -306,6 +330,10 @@ class SanicASGIAdapter(requests.asgi.ASGIAdapter):
             if not self.suppress_exceptions:
                 raise exc from None
 
+        if no_response:
+            response_started = True
+            raw_kwargs = {"status_code": 204, "headers": []}
+
         if not self.suppress_exceptions:
             assert response_started, "TestClient did not receive any response."
         elif not response_started:
@@ -349,13 +377,15 @@ class SanicASGITestClient(requests.ASGISession):
         )
         self.mount("http://", adapter)
         self.mount("https://", adapter)
+        self.mount("ws://", adapter)
+        self.mount("wss://", adapter)
         self.headers.update({"user-agent": "testclient"})
         self.app = app
         self.base_url = base_url
 
     async def request(self, method, url, gather_request=True, *args, **kwargs):
+
         self.gather_request = gather_request
-        print(url)
         response = await super().request(method, url, *args, **kwargs)
         response.status = response.status_code
         response.body = response.content
@@ -372,3 +402,22 @@ class SanicASGITestClient(requests.ASGISession):
         settings = super().merge_environment_settings(*args, **kwargs)
         settings.update({"gather_return": self.gather_request})
         return settings
+
+    async def websocket(self, uri, subprotocols=None, *args, **kwargs):
+        if uri.startswith(("ws:", "wss:")):
+            url = uri
+        else:
+            uri = uri if uri.startswith("/") else "/{uri}".format(uri=uri)
+            url = "ws://testserver{uri}".format(uri=uri)
+
+            headers = kwargs.get("headers", {})
+            headers.setdefault("connection", "upgrade")
+            headers.setdefault("sec-websocket-key", "testserver==")
+            headers.setdefault("sec-websocket-version", "13")
+            if subprotocols is not None:
+                headers.setdefault(
+                    "sec-websocket-protocol", ", ".join(subprotocols)
+                )
+            kwargs["headers"] = headers
+
+            return await self.request("websocket", url, **kwargs)

sanic/websocket.py

@@ -143,9 +143,8 @@ class WebSocketConnection:
             return message["text"]
         elif message["type"] == "websocket.disconnect":
             pass
-            # await self._send({
-            #     "type": "websocket.close"
-            # })
+
+    receive = recv
 
     async def accept(self) -> None:
         await self._send({"type": "websocket.accept", "subprotocol": ""})

tests/test_asgi.py

@@ -1,5 +1,203 @@
-from sanic.testing import SanicASGITestClient
+import asyncio
+
+from collections import deque
+
+import pytest
+import uvicorn
+
+from sanic.asgi import MockTransport
+from sanic.exceptions import InvalidUsage
+from sanic.websocket import WebSocketConnection
 
 
-def test_asgi_client_instantiation(app):
-    assert isinstance(app.asgi_client, SanicASGITestClient)
+@pytest.fixture
+def message_stack():
+    return deque()
+
+
+@pytest.fixture
+def receive(message_stack):
+    async def _receive():
+        return message_stack.popleft()
+
+    return _receive
+
+
+@pytest.fixture
+def send(message_stack):
+    async def _send(message):
+        message_stack.append(message)
+
+    return _send
+
+
+@pytest.fixture
+def transport(message_stack, receive, send):
+    return MockTransport({}, receive, send)
+
+
+@pytest.fixture
+# @pytest.mark.asyncio
+def protocol(transport, loop):
+    return transport.get_protocol()
+
+
+def test_listeners_triggered(app):
+    before_server_start = False
+    after_server_start = False
+    before_server_stop = False
+    after_server_stop = False
+
+    @app.listener("before_server_start")
+    def do_before_server_start(*args, **kwargs):
+        nonlocal before_server_start
+        before_server_start = True
+
+    @app.listener("after_server_start")
+    def do_after_server_start(*args, **kwargs):
+        nonlocal after_server_start
+        after_server_start = True
+
+    @app.listener("before_server_stop")
+    def do_before_server_stop(*args, **kwargs):
+        nonlocal before_server_stop
+        before_server_stop = True
+
+    @app.listener("after_server_stop")
+    def do_after_server_stop(*args, **kwargs):
+        nonlocal after_server_stop
+        after_server_stop = True
+
+    class CustomServer(uvicorn.Server):
+        def install_signal_handlers(self):
+            pass
+
+    config = uvicorn.Config(app=app, loop="asyncio", limit_max_requests=0)
+    server = CustomServer(config=config)
+
+    with pytest.warns(UserWarning):
+        server.run()
+
+    for task in asyncio.Task.all_tasks():
+        task.cancel()
+
+    assert before_server_start
+    assert after_server_start
+    assert before_server_stop
+    assert after_server_stop
+
+
+def test_listeners_triggered_async(app):
+    before_server_start = False
+    after_server_start = False
+    before_server_stop = False
+    after_server_stop = False
+
+    @app.listener("before_server_start")
+    async def do_before_server_start(*args, **kwargs):
+        nonlocal before_server_start
+        before_server_start = True
+
+    @app.listener("after_server_start")
+    async def do_after_server_start(*args, **kwargs):
+        nonlocal after_server_start
+        after_server_start = True
+
+    @app.listener("before_server_stop")
+    async def do_before_server_stop(*args, **kwargs):
+        nonlocal before_server_stop
+        before_server_stop = True
+
+    @app.listener("after_server_stop")
+    async def do_after_server_stop(*args, **kwargs):
+        nonlocal after_server_stop
+        after_server_stop = True
+
+    class CustomServer(uvicorn.Server):
+        def install_signal_handlers(self):
+            pass
+
+    config = uvicorn.Config(app=app, loop="asyncio", limit_max_requests=0)
+    server = CustomServer(config=config)
+
+    with pytest.warns(UserWarning):
+        server.run()
+
+    for task in asyncio.Task.all_tasks():
+        task.cancel()
+
+    assert before_server_start
+    assert after_server_start
+    assert before_server_stop
+    assert after_server_stop
+
+
+@pytest.mark.asyncio
+async def test_mockprotocol_events(protocol):
+    assert protocol._not_paused.is_set()
+    protocol.pause_writing()
+    assert not protocol._not_paused.is_set()
+    protocol.resume_writing()
+    assert protocol._not_paused.is_set()
+
+
+@pytest.mark.asyncio
+async def test_protocol_push_data(protocol, message_stack):
+    text = b"hello"
+
+    await protocol.push_data(text)
+    await protocol.complete()
+
+    assert len(message_stack) == 2
+
+    message = message_stack.popleft()
+    assert message["type"] == "http.response.body"
+    assert message["more_body"]
+    assert message["body"] == text
+
+    message = message_stack.popleft()
+    assert message["type"] == "http.response.body"
+    assert not message["more_body"]
+    assert message["body"] == b""
+
+
+@pytest.mark.asyncio
+async def test_websocket_send(send, receive, message_stack):
+    text_string = "hello"
+    text_bytes = b"hello"
+
+    ws = WebSocketConnection(send, receive)
+    await ws.send(text_string)
+    await ws.send(text_bytes)
+
+    assert len(message_stack) == 2
+
+    message = message_stack.popleft()
+    assert message["type"] == "websocket.send"
+    assert message["text"] == text_string
+    assert "bytes" not in message
+
+    message = message_stack.popleft()
+    assert message["type"] == "websocket.send"
+    assert message["bytes"] == text_bytes
+    assert "text" not in message
+
+
+@pytest.mark.asyncio
+async def test_websocket_receive(send, receive, message_stack):
+    msg = {"text": "hello", "type": "websocket.receive"}
+    message_stack.append(msg)
+
+    ws = WebSocketConnection(send, receive)
+    text = await ws.receive()
+
+    assert text == msg["text"]
+
+
+def test_improper_websocket_connection(transport, send, receive):
+    with pytest.raises(InvalidUsage):
+        transport.get_websocket_connection()
+
+    transport.create_websocket_connection(send, receive)
+    connection = transport.get_websocket_connection()
+    assert isinstance(connection, WebSocketConnection)

tests/test_asgi_client.py

@@ -0,0 +1,5 @@
+from sanic.testing import SanicASGITestClient
+
+
+def test_asgi_client_instantiation(app):
+    assert isinstance(app.asgi_client, SanicASGITestClient)

tests/test_request_stream.py

@@ -197,6 +197,121 @@ def test_request_stream_app(app):
     assert response.text == data
 
 
+@pytest.mark.asyncio
+async def test_request_stream_app_asgi(app):
+    """for self.is_request_stream = True and decorators"""
+
+    @app.get("/get")
+    async def get(request):
+        assert request.stream is None
+        return text("GET")
+
+    @app.head("/head")
+    async def head(request):
+        assert request.stream is None
+        return text("HEAD")
+
+    @app.delete("/delete")
+    async def delete(request):
+        assert request.stream is None
+        return text("DELETE")
+
+    @app.options("/options")
+    async def options(request):
+        assert request.stream is None
+        return text("OPTIONS")
+
+    @app.post("/_post/<id>")
+    async def _post(request, id):
+        assert request.stream is None
+        return text("_POST")
+
+    @app.post("/post/<id>", stream=True)
+    async def post(request, id):
+        assert isinstance(request.stream, StreamBuffer)
+        result = ""
+        while True:
+            body = await request.stream.read()
+            if body is None:
+                break
+            result += body.decode("utf-8")
+        return text(result)
+
+    @app.put("/_put")
+    async def _put(request):
+        assert request.stream is None
+        return text("_PUT")
+
+    @app.put("/put", stream=True)
+    async def put(request):
+        assert isinstance(request.stream, StreamBuffer)
+        result = ""
+        while True:
+            body = await request.stream.read()
+            if body is None:
+                break
+            result += body.decode("utf-8")
+        return text(result)
+
+    @app.patch("/_patch")
+    async def _patch(request):
+        assert request.stream is None
+        return text("_PATCH")
+
+    @app.patch("/patch", stream=True)
+    async def patch(request):
+        assert isinstance(request.stream, StreamBuffer)
+        result = ""
+        while True:
+            body = await request.stream.read()
+            if body is None:
+                break
+            result += body.decode("utf-8")
+        return text(result)
+
+    assert app.is_request_stream is True
+
+    request, response = await app.asgi_client.get("/get")
+    assert response.status == 200
+    assert response.text == "GET"
+
+    request, response = await app.asgi_client.head("/head")
+    assert response.status == 200
+    assert response.text == ""
+
+    request, response = await app.asgi_client.delete("/delete")
+    assert response.status == 200
+    assert response.text == "DELETE"
+
+    request, response = await app.asgi_client.options("/options")
+    assert response.status == 200
+    assert response.text == "OPTIONS"
+
+    request, response = await app.asgi_client.post("/_post/1", data=data)
+    assert response.status == 200
+    assert response.text == "_POST"
+
+    request, response = await app.asgi_client.post("/post/1", data=data)
+    assert response.status == 200
+    assert response.text == data
+
+    request, response = await app.asgi_client.put("/_put", data=data)
+    assert response.status == 200
+    assert response.text == "_PUT"
+
+    request, response = await app.asgi_client.put("/put", data=data)
+    assert response.status == 200
+    assert response.text == data
+
+    request, response = await app.asgi_client.patch("/_patch", data=data)
+    assert response.status == 200
+    assert response.text == "_PATCH"
+
+    request, response = await app.asgi_client.patch("/patch", data=data)
+    assert response.status == 200
+    assert response.text == data
+
+
 def test_request_stream_handle_exception(app):
     """for handling exceptions properly"""
 

tests/test_routes.py

@@ -474,6 +474,19 @@ def test_websocket_route(app, url):
     assert ev.is_set()
 
 
+@pytest.mark.asyncio
+@pytest.mark.parametrize("url", ["/ws", "ws"])
+async def test_websocket_route_asgi(app, url):
+    ev = asyncio.Event()
+
+    @app.websocket(url)
+    async def handler(request, ws):
+        ev.set()
+
+    request, response = await app.asgi_client.websocket(url)
+    assert ev.is_set()
+
+
 def test_websocket_route_with_subprotocols(app):
     results = []
 

tox.ini

@@ -18,6 +18,7 @@ deps =
     beautifulsoup4
     gunicorn
     pytest-benchmark
+    uvicorn
 commands =
     pytest {posargs:tests --cov sanic}
     - coverage combine --append