tests: branches coverage in test_authentication, test_background,…

… `test_responses`, `test_routing` (#2796)

Co-authored-by: Marcelo Trylesinski <[email protected]>

tests/test_authentication.py

@@ -210,8 +210,8 @@ def test_invalid_decorator_usage() -> None:
     with pytest.raises(Exception):
 
         @requires("authenticated")
-        def foo() -> None:
-            pass  # pragma: no cover
+        def foo() -> None:  # pragma: no cover
+            pass
 
 
 def test_user_interface(test_client_factory: TestClientFactory) -> None:

tests/test_background.py

@@ -73,7 +73,7 @@ def test_multi_tasks_failure_avoids_next_execution(
     def increment() -> None:
         nonlocal TASK_COUNTER
         TASK_COUNTER += 1
-        if TASK_COUNTER == 1:
+        if TASK_COUNTER == 1:  # pragma: no branch
             raise Exception("task failed")
 
     async def app(scope: Scope, receive: Receive, send: Send) -> None:

tests/test_responses.py

@@ -265,7 +265,7 @@ async def send(message: Message) -> None:
             assert "content-disposition" in headers
             assert "last-modified" in headers
             assert "etag" in headers
-        elif message["type"] == "http.response.body":
+        elif message["type"] == "http.response.body":  # pragma: no branch
             assert message["body"] == b""
             assert message["more_body"] is False
 
@@ -749,7 +749,7 @@ async def receive() -> Message:
     async def send(message: Message) -> None:
         if message["type"] == "http.response.start":
             start_message.update(message)
-        elif message["type"] == "http.response.body":
+        elif message["type"] == "http.response.body":  # pragma: no branch
             received_chunks.append(message["body"])
 
     await app({"type": "http", "method": "get", "headers": [(b"range", b"bytes=0-15,20-35,35-50")]}, receive, send)

tests/test_routing.py

@@ -797,7 +797,7 @@ def run_startup() -> None:
     async def app(scope: Scope, receive: Receive, send: Send) -> None:
         async def _send(message: Message) -> None:
             nonlocal startup_failed
-            if message["type"] == "lifespan.startup.failed":
+            if message["type"] == "lifespan.startup.failed":  # pragma: no branch
                 startup_failed = True
             return await send(message)