ci: add strict-no-cover to detect unnecessary coverage pragmas (#1897)

tests/client/auth/extensions/test_client_credentials.py

@@ -23,7 +23,7 @@ class MockTokenStorage:
         self._tokens: OAuthToken | None = None
         self._client_info: OAuthClientInformationFull | None = None
 
-    async def get_tokens(self) -> OAuthToken | None:  # pragma: no cover
+    async def get_tokens(self) -> OAuthToken | None:
         return self._tokens
 
     async def set_tokens(self, tokens: OAuthToken) -> None:  # pragma: no cover

tests/client/conftest.py

@@ -40,7 +40,7 @@ class StreamSpyCollection:
         self.client.sent_messages.clear()
         self.server.sent_messages.clear()
 
-    def get_client_requests(self, method: str | None = None) -> list[JSONRPCRequest]:  # pragma: no cover
+    def get_client_requests(self, method: str | None = None) -> list[JSONRPCRequest]:
         """Get client-sent requests, optionally filtered by method."""
         return [
             req.message

tests/client/test_auth.py

@@ -1696,7 +1696,7 @@ class TestSEP985Discovery:
         final_response = httpx.Response(200, request=final_request)
         try:
             await auth_flow.asend(final_response)
-        except StopAsyncIteration:  # pragma: no cover
+        except StopAsyncIteration:
             pass
 
     @pytest.mark.anyio

tests/client/test_notification_response.py

@@ -94,7 +94,7 @@ def non_sdk_server(non_sdk_server_port: int) -> Generator[None, None, None]:
     proc.start()
 
     # Wait for server to be ready
-    try:  # pragma: no cover
+    try:
         wait_for_server(non_sdk_server_port, timeout=10.0)
     except TimeoutError:  # pragma: no cover
         proc.kill()

tests/client/test_stdio.py

@@ -157,7 +157,7 @@ async def test_stdio_client_universal_cleanup():
 
 @pytest.mark.anyio
 @pytest.mark.skipif(sys.platform == "win32", reason="Windows signal handling is different")
-async def test_stdio_client_sigint_only_process():  # pragma: no cover
+async def test_stdio_client_sigint_only_process():  # pragma: lax no cover
     """Test cleanup with a process that ignores SIGTERM but responds to SIGINT."""
     # Create a Python script that ignores SIGTERM but handles SIGINT
     script_content = textwrap.dedent(
@@ -481,7 +481,7 @@ class TestChildProcessCleanup:
             await anyio.sleep(0.5)
 
             # Verify child is writing
-            if os.path.exists(marker_file):  # pragma: no cover
+            if os.path.exists(marker_file):  # pragma: no branch
                 size1 = os.path.getsize(marker_file)
                 await anyio.sleep(0.3)
                 size2 = os.path.getsize(marker_file)

tests/client/transports/test_memory.py

@@ -34,10 +34,8 @@ def fastmcp_server() -> FastMCP:
     """Create a FastMCP server for testing."""
     server = FastMCP("test")
 
-    # pragma: no cover on handlers below - they exist only to register capabilities.
-    # Transport tests verify stream creation and basic protocol, not handler invocation.
     @server.tool()
-    def greet(name: str) -> str:  # pragma: no cover
+    def greet(name: str) -> str:
         """Greet someone by name."""
         return f"Hello, {name}!"