Test for the new deprecation warning

agronholm · Nov 4, 2023 · b77b116 · b77b116
1 parent 06d13bc
commit b77b116
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/tests/test_to_thread.py b/tests/test_to_thread.py
@@ -142,6 +142,11 @@ def wait_event() -> None:
     assert future.result(1)
 
 
+async def test_deprecated_cancellable_param() -> None:
+    with pytest.warns(DeprecationWarning, match="The `cancellable=`"):
+        await to_thread.run_sync(bool, cancellable=True)
+
+
 async def test_contextvar_propagation() -> None:
     var = ContextVar("var", default=1)
     var.set(6)