summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_monitoring.py
diff options
context:
space:
mode:
Diffstat (limited to 'Lib/test/test_monitoring.py')
-rw-r--r--Lib/test/test_monitoring.py35
1 files changed, 29 insertions, 6 deletions
diff --git a/Lib/test/test_monitoring.py b/Lib/test/test_monitoring.py
index 1a129b9..d7043cd 100644
--- a/Lib/test/test_monitoring.py
+++ b/Lib/test/test_monitoring.py
@@ -832,20 +832,43 @@ class ExceptionMonitoringTest(CheckEvents):
self.check_events(func1, [("raise", KeyError)])
- # gh-116090: This test doesn't really require specialization, but running
- # it without specialization exposes a monitoring bug.
- @requires_specialization
def test_implicit_stop_iteration(self):
+ """Generators are documented as raising a StopIteration
+ when they terminate.
+ However, we don't do that if we can avoid it, for speed.
+ sys.monitoring handles that by injecting a STOP_ITERATION
+ event when we would otherwise have skip the RAISE event.
+ This test checks that both paths record an equivalent event.
+ """
def gen():
yield 1
return 2
- def implicit_stop_iteration():
- for _ in gen():
+ def implicit_stop_iteration(iterator=None):
+ if iterator is None:
+ iterator = gen()
+ for _ in iterator:
pass
- self.check_events(implicit_stop_iteration, [("raise", StopIteration)], recorders=(StopiterationRecorder,))
+ recorders=(ExceptionRecorder, StopiterationRecorder,)
+ expected = [("raise", StopIteration)]
+
+ # Make sure that the loop is unspecialized, and that it will not
+ # re-specialize immediately, so that we can we can test the
+ # unspecialized version of the loop first.
+ # Note: this assumes that we don't specialize loops over sets.
+ implicit_stop_iteration(set(range(100)))
+
+ # This will record a RAISE event for the StopIteration.
+ self.check_events(implicit_stop_iteration, expected, recorders=recorders)
+
+ # Now specialize, so that we see a STOP_ITERATION event.
+ for _ in range(100):
+ implicit_stop_iteration()
+
+ # This will record a STOP_ITERATION event for the StopIteration.
+ self.check_events(implicit_stop_iteration, expected, recorders=recorders)
initial = [
("raise", ZeroDivisionError),