Issue #19928: Implemented a test for repr() of cell objects.

Lib/test/test_repr.py

@@ -179,8 +179,15 @@ class ReprTests(unittest.TestCase):
         self.assertTrue(repr(x).startswith('<read-only buffer for 0x'))
 
     def test_cell(self):
-        # XXX Hmm? How to get at a cell object?
-        pass
+        def get_cell():
+            x = 42
+            def inner():
+                return x
+            return inner
+        x = get_cell().__closure__[0]
+        self.assertRegexpMatches(repr(x), r'<cell at 0x[0-9a-f]+: '
+                                          r'int object at 0x[0-9a-f]+>')
+        self.assertRegexpMatches(r(x), r'<cell at.*\.\.\..*>')
 
     def test_descriptors(self):
         eq = self.assertEqual

Misc/NEWS

@@ -77,6 +77,8 @@ IDLE
 Tests
 -----
 
+- Issue #19928: Implemented a test for repr() of cell objects.
+
 - Issue #19595: Re-enabled a long-disabled test in test_winsound.
 
 - Issue #19588: Fixed tests in test_random that were silently skipped most