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-rw-r--r--Lib/test/test_types.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
index d82c84607b..d16dbba173 100644
--- a/Lib/test/test_types.py
+++ b/Lib/test/test_types.py
@@ -550,6 +550,11 @@ class TypesTests(unittest.TestCase):
for code in 'xXobns':
self.assertRaises(ValueError, format, 0, ',' + code)
+ def test_internal_sizes(self):
+ self.assertGreater(object.__basicsize__, 0)
+ self.assertGreater(tuple.__itemsize__, 0)
+
+
def test_main():
run_unittest(TypesTests)