diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index 7c68b2c..3cd39d4 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -526,6 +526,29 @@
         code = 'import _testcapi; _testcapi.pyobject_malloc_without_gil()'
         self.check_malloc_without_gil(code)
 
+    def check_pyobject_is_freed(self, func):
+        code = textwrap.dedent('''
+            import gc, os, sys, _testcapi
+            # Disable the GC to avoid crash on GC collection
+            gc.disable()
+            obj = _testcapi.{func}()
+            error = (_testcapi.pyobject_is_freed(obj) == False)
+            # Exit immediately to avoid a crash while deallocating
+            # the invalid object
+            os._exit(int(error))
+        ''')
+        code = code.format(func=func)
+        assert_python_ok('-c', code, PYTHONMALLOC=self.PYTHONMALLOC)
+
+    def test_pyobject_is_freed_uninitialized(self):
+        self.check_pyobject_is_freed('pyobject_uninitialized')
+
+    def test_pyobject_is_freed_forbidden_bytes(self):
+        self.check_pyobject_is_freed('pyobject_forbidden_bytes')
+
+    def test_pyobject_is_freed_free(self):
+        self.check_pyobject_is_freed('pyobject_freed')
+
 
 class PyMemMallocDebugTests(PyMemDebugTests):
     PYTHONMALLOC = 'malloc_debug'