Fix test failures

Catch and extract from ExceptionGroups

tests/test_app.py

@@ -1,5 +1,5 @@
-from typing import NoReturn
 import sys
+from typing import NoReturn
 
 import pytest
 from quart import ResponseReturnValue
@@ -51,8 +51,10 @@ async def handler(_: Exception) -> ResponseReturnValue:
     try:
         async with test_client.websocket("/ws/") as test_websocket:
             await test_websocket.receive()
-    except WebsocketResponseError as error:
-        assert error.response.status_code == 201
+    except BaseExceptionGroup as error:
+        for exception in error.exceptions:
+            if isinstance(exception, WebsocketResponseError):
+                assert exception.response.status_code == 201
 
 
 @pytest.mark.trio
@@ -68,8 +70,10 @@ async def test_websocket_exception_group_unhandled(error_app: QuartTrio) -> None
     try:
         async with test_client.websocket("/ws/") as test_websocket:
             await test_websocket.receive()
-    except WebsocketResponseError as error:
-        assert error.response.status_code == 500
+    except BaseExceptionGroup as error:
+        for exception in error.exceptions:
+            if isinstance(exception, WebsocketResponseError):
+                assert exception.response.status_code == 500
 
 
 @pytest.mark.trio

tests/test_basic.py

@@ -1,3 +1,4 @@
+import sys
 from pathlib import Path
 
 import pytest
@@ -6,6 +7,9 @@
 
 from quart_trio import QuartTrio
 
+if sys.version_info < (3, 11):
+    from exceptiongroup import BaseExceptionGroup
+
 
 @pytest.fixture
 def app() -> Quart:
@@ -53,8 +57,10 @@ async def test_websocket_abort(app: Quart) -> None:
     try:
         async with test_client.websocket("/ws/abort/") as test_websocket:
             await test_websocket.receive()
-    except WebsocketResponseError as error:
-        assert error.response.status_code == 401
+    except BaseExceptionGroup as error:
+        for exception in error.exceptions:
+            if isinstance(exception, WebsocketResponseError):
+                assert exception.response.status_code == 401
 
 
 @pytest.mark.trio