RAHHH

backend/lib/python3.12/site-packages/twisted/trial/test/weird.py

@@ -0,0 +1,23 @@
+import unittest
+
+from twisted.internet import defer
+
+# Used in test_tests.UnhandledDeferredTests
+
+
+class TestBleeding(unittest.TestCase):
+    """This test creates an unhandled Deferred and leaves it in a cycle.
+
+    The Deferred is left in a cycle so that the garbage collector won't pick it
+    up immediately.  We were having some problems where unhandled Deferreds in
+    one test were failing random other tests. (See #1507, #1213)
+    """
+
+    def test_unhandledDeferred(self):
+        try:
+            1 / 0
+        except ZeroDivisionError:
+            f = defer.fail()
+        # these two lines create the cycle. don't remove them
+        l = [f]
+        l.append(l)