def test_cannot_shrink_before_shrinkfreq():
shrinkfreq = 3
pool = Mock()
resizer = DynamicPoolResizer(pool, minspare=5, maxspare=10,
shrinkfreq=shrinkfreq)
resizer.shrink(1)
resizer.lastshrink -= (shrinkfreq - 1)
assert resizer.can_shrink() is False
def test_shrink_sets_lastshrink():
pool = Mock()
resizer = DynamicPoolResizer(pool, minspare=5, maxspare=10)
assert resizer.lastshrink is None
resizer.shrink(10)
assert resizer.lastshrink is not None
def test_shrink_calls_threadpool_shrink():
pool = Mock()
resizer = DynamicPoolResizer(pool, minspare=5, maxspare=10)
resizer.shrink(10)
pool.shrink.assert_called_once_with(10)
