def test_gc_manager_timing():
with gc_manager() as m:
for i in range(10):
m.collect()
cycle = []
cycle.append(cycle)
assert m.collection_time > 0
def test_gc_manager():
gc.disable()
assert not gc.callbacks
with gc_manager(enabled=True) as m:
assert gc.callbacks
assert gc.isenabled()
# Make sure we've rolled back the old state of ``gc``.
assert not gc.callbacks
assert not gc.isenabled()