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-rw-r--r--Lib/test/test_gc.py27
1 files changed, 27 insertions, 0 deletions
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
index 414e17a..2262b36 100644
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -415,6 +415,33 @@ class GCTests(unittest.TestCase):
self.assertEqual(gc.get_referents(1, 'a', 4j), [])
+ def test_is_tracked(self):
+ # Atomic built-in types are not tracked, user-defined objects and
+ # mutable containers are.
+ # NOTE: types with special optimizations (e.g. tuple) have tests
+ # in their own test files instead.
+ self.assertFalse(gc.is_tracked(None))
+ self.assertFalse(gc.is_tracked(1))
+ self.assertFalse(gc.is_tracked(1.0))
+ self.assertFalse(gc.is_tracked(1.0 + 5.0j))
+ self.assertFalse(gc.is_tracked(True))
+ self.assertFalse(gc.is_tracked(False))
+ self.assertFalse(gc.is_tracked(b"a"))
+ self.assertFalse(gc.is_tracked("a"))
+ self.assertFalse(gc.is_tracked(bytearray(b"a")))
+ self.assertFalse(gc.is_tracked(type))
+ self.assertFalse(gc.is_tracked(int))
+ self.assertFalse(gc.is_tracked(object))
+ self.assertFalse(gc.is_tracked(object()))
+
+ class UserClass:
+ pass
+ self.assertTrue(gc.is_tracked(gc))
+ self.assertTrue(gc.is_tracked(UserClass))
+ self.assertTrue(gc.is_tracked(UserClass()))
+ self.assertTrue(gc.is_tracked([]))
+ self.assertTrue(gc.is_tracked(set()))
+
def test_bug1055820b(self):
# Corresponds to temp2b.py in the bug report.