Improve tests

setup.cfg

@@ -44,7 +44,7 @@ plugins =
 
 [coverage:report]
 precision = 2
-fail_under = 98.50
+fail_under = 98.70
 show_missing = true
 skip_covered = true
 exclude_lines =

tests/protocols/test_websocket.py

@@ -1,4 +1,5 @@
 import asyncio
+import typing
 
 import httpx
 import pytest
@@ -713,11 +714,23 @@ async def app(scope, receive, send):
         message = await receive()
         if message["type"] == "websocket.connect":
             await send_accept_task.wait()
-            await send({"type": "websocket.accept"})
         disconnect_message = await receive()
 
+    response: typing.Optional[httpx.Response] = None
+
     async def websocket_session(uri):
-        await websockets.client.connect(uri)
+        # await websockets.client.connect(uri)
+        nonlocal response
+        async with httpx.AsyncClient() as client:
+            response = await client.get(
+                f"http://127.0.0.1:{unused_tcp_port}",
+                headers={
+                    "upgrade": "websocket",
+                    "connection": "upgrade",
+                    "sec-websocket-version": "13",
+                    "sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
+                },
+            )
 
     config = Config(
         app=app,
@@ -731,9 +744,13 @@ async def websocket_session(uri):
             websocket_session(f"ws://127.0.0.1:{unused_tcp_port}")
         )
         await asyncio.sleep(0.1)
-        task.cancel()
         send_accept_task.set()
 
+    task.cancel()
+
+    assert response is not None
+    assert response.status_code == 500, response.text
+    assert response.text == "Internal Server Error"
     assert disconnect_message == {"type": "websocket.disconnect", "code": 1006}
 
 
@@ -744,6 +761,7 @@ async def test_send_close_on_server_shutdown(
     ws_protocol_cls, http_protocol_cls, unused_tcp_port: int
 ):
     disconnect_message = {}
+    server_shutdown_event = asyncio.Event()
 
     async def app(scope, receive, send):
         nonlocal disconnect_message
@@ -755,10 +773,13 @@ async def app(scope, receive, send):
                 disconnect_message = message
                 break
 
+    websocket: typing.Optional[websockets.client.WebSocketClientProtocol] = None
+
     async def websocket_session(uri):
-        async with websockets.client.connect(uri):
-            while True:
-                await asyncio.sleep(0.1)
+        nonlocal websocket
+        async with websockets.client.connect(uri) as ws_connection:
+            websocket = ws_connection
+            await server_shutdown_event.wait()
 
     config = Config(
         app=app,
@@ -773,7 +794,10 @@ async def websocket_session(uri):
         )
         await asyncio.sleep(0.1)
         disconnect_message_before_shutdown = disconnect_message
+    server_shutdown_event.set()
 
+    assert websocket is not None
+    assert websocket.close_code == 1012
     assert disconnect_message_before_shutdown == {}
     assert disconnect_message == {"type": "websocket.disconnect", "code": 1012}
     task.cancel()

uvicorn/protocols/websockets/websockets_impl.py

@@ -144,8 +144,11 @@ def connection_lost(self, exc: Optional[Exception]) -> None:
 
     def shutdown(self) -> None:
         self.ws_server.closing = True
-        if not self.transport.is_closing():
+        if self.handshake_completed_event.is_set():
             self.fail_connection(1012)
+        else:
+            self.send_500_response()
+        self.transport.close()
 
     def on_task_complete(self, task: asyncio.Task) -> None:
         self.tasks.discard(task)

uvicorn/protocols/websockets/wsproto_impl.py

@@ -233,7 +233,12 @@ def send_500_response(self) -> None:
             (b"connection", b"close"),
         ]
         if self.conn.connection is None:
-            output = self.conn.send(wsproto.events.RejectConnection(status_code=500))
+            output = self.conn.send(
+                wsproto.events.RejectConnection(status_code=500, has_body=True)
+            )
+            output += self.conn.send(
+                wsproto.events.RejectData(data=b"Internal Server Error")
+            )
         else:
             msg = h11.Response(
                 status_code=500, headers=headers, reason="Internal Server Error"