def test_clear(Cache, obj_infos):
"""The clear method empties the cache."""
cache = Cache(5)
for obj_info in obj_infos:
cache.add(obj_info)
cache.clear()
assert cache.get_cached() == []
# Just an additional check ensuring that any additional structures
# which may be used were cleaned properly as well.
for obj_info in obj_infos:
assert not cache.remove(obj_info)
