def test_separation_of_init_and_enter(self):
a = object()
t = TrackRCFor(a)
c = a
with t:
del c
del a
t.assertDelta(-2)
def test_nesting_by_using_pre_instantiated(self):
a = "Another Python string, given to name \"a\""
inner = TrackRCFor(a)
# "outer" will see "a" decrefed twice, first by the del statement, then
# by deleting "inner" (which itself holds a reference to a).
with TrackRCFor(inner, a) as outer:
with inner:
del a
inner.assertDelta(-1)
del inner
outer.assertDelta(-1, -2)