def test_calls_function_when_version_changes(self, gdv_cache):
"""Memoized function should be called after timeout or version change.
Also demonstrates that even None return values are cached."""
counter = Mock()
memoizer = utils.ReleaseMemoizer(version_timeout=0.1)
gdv_cache.side_effect = ['thing1', 'thing1', 'thing2', 'thing2']
@memoizer.memoize(1)
def mem_func():
counter()
return None
mem_func()
# cached
mem_func()
time.sleep(0.2)
# cached, but checked the version
mem_func()
time.sleep(0.2)
# not cached because the version changed
mem_func()
time.sleep(1)
# not cached because timeout
mem_func()
# function should have been called 3 times
assert counter.call_count == 3
# version should have been called 4 times
assert gdv_cache.call_count == 4
def test_calls_version_after_cache_timeout(self, gdv_cache):
def mem_func():
pass
gdv_cache.return_value = 'dude'
memoizer = utils.ReleaseMemoizer(version_timeout=0.1)
memoizer._memoize_version(mem_func)
memoizer._memoize_version(mem_func)
time.sleep(0.2)
memoizer._memoize_version(mem_func)
assert gdv_cache.call_count == 2