bpo-42482: remove reference to exc_traceback from TracebackException (GH-23531)
diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index f86afc6..5df701c 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -1123,6 +1123,18 @@ def test_context(self):
self.assertEqual(exc_info[0], exc.exc_type)
self.assertEqual(str(exc_info[1]), str(exc))
+ def test_no_refs_to_exception_and_traceback_objects(self):
+ try:
+ 1/0
+ except Exception:
+ exc_info = sys.exc_info()
+
+ refcnt1 = sys.getrefcount(exc_info[1])
+ refcnt2 = sys.getrefcount(exc_info[2])
+ exc = traceback.TracebackException(*exc_info)
+ self.assertEqual(sys.getrefcount(exc_info[1]), refcnt1)
+ self.assertEqual(sys.getrefcount(exc_info[2]), refcnt2)
+
def test_comparison_basic(self):
try:
1/0
@@ -1172,6 +1184,16 @@ def raise_with_locals():
exc7 = traceback.TracebackException(*exc_info, limit=-2, capture_locals=True)
self.assertNotEqual(exc6, exc7)
+ def test_comparison_equivalent_exceptions_are_equal(self):
+ excs = []
+ for _ in range(2):
+ try:
+ 1/0
+ except:
+ excs.append(traceback.TracebackException(*sys.exc_info()))
+ self.assertEqual(excs[0], excs[1])
+ self.assertEqual(list(excs[0].format()), list(excs[1].format()))
+
def test_unhashable(self):
class UnhashableException(Exception):
def __eq__(self, other):