def run_and_fail():
source = Stream()
sink = source.buffer(10).rate_limit(1).sink(L.append)
for i in range(10):
source.emit(i)
sink.destroy()
def test_buffer_ref_counts():
source = Stream(asynchronous=True)
_ = source.buffer(5)
refs = []
for i in range(5):
r = RefCounter()
refs.append(r)
source.emit(i, metadata=[{'ref': r}])
assert all(r.count == 1 for r in refs)
yield gen.sleep(0.05)
assert all(r.count == 0 for r in refs)
