Merge branch 'master' into bpo-39107bpo-39107

1 files changed, 11 insertions, 0 deletions

diff --git a/Lib/test/test_sched.py b/Lib/test/test_sched.py
index 491d7b3a74..7ae7baae85 100644
--- a/Lib/test/test_sched.py
+++ b/Lib/test/test_sched.py
@@ -142,6 +142,17 @@ class TestCase(unittest.TestCase):
         self.assertTrue(q.empty())
         self.assertEqual(timer.time(), 4)
 
+    def test_cancel_correct_event(self):
+        # bpo-19270
+        events = []
+        scheduler = sched.scheduler()
+        scheduler.enterabs(1, 1, events.append, ("a",))
+        b = scheduler.enterabs(1, 1, events.append, ("b",))
+        scheduler.enterabs(1, 1, events.append, ("c",))
+        scheduler.cancel(b)
+        scheduler.run()
+        self.assertEqual(events, ["a", "c"])
+
     def test_empty(self):
         l = []
         fun = lambda x: l.append(x)