ctypes: Add a test case for nested _as_parameter_ attribute

tomasr8 · tomasr8 · commit 59e6ba1960e6 · 2023-07-30T18:31:06.000+02:00
diff --git a/Lib/test/test_ctypes/test_as_parameter.py b/Lib/test/test_ctypes/test_as_parameter.py
@@ -221,5 +221,16 @@ class AsParamPropertyWrapperTestCase(BasicWrapTestCase):
     wrap = AsParamPropertyWrapper
 
 
+class AsParamNestedWrapperTestCase(BasicWrapTestCase):
+    """Test that _as_parameter_ is evaluated recursively.
+
+    The _as_parameter_ attribute can be another object which
+    defines its own _as_parameter_ attribute.
+    """
+
+    def wrap(self, param):
+        return AsParamWrapper(AsParamWrapper(AsParamWrapper(param)))
+
+
 if __name__ == '__main__':
     unittest.main()
