[3.12] gh-107461 ctypes: Add a testcase for nested `_as_parameter_` lookup (GH-107462...

(cherry picked from commit 0bf42dae7e73febc76ea96fd58af6b765a12b8a7)

Co-authored-by: Tomas R <tomas.roun8@gmail.com>

diff --git a/Lib/test/test_ctypes/test_as_parameter.py b/Lib/test/test_ctypes/test_as_parameter.py
index 36fec572b1674116d958051278f124451caa48fb..27a5d3ac06430b22f65774c2175d18dae6b7c0d2 100644 (file)
--- a/Lib/test/test_ctypes/test_as_parameter.py
+++ b/Lib/test/test_ctypes/test_as_parameter.py
@@ -227,5 +227,16 @@ class AsParamPropertyWrapperTestCase(BasicWrapTestCase):
 
 #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+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()