def test_get_cache_key_no_key(self):
# contexts w/o given key result in ``None``
base = OOOTransformBase()
context = FakeContext()
stream = datastream('mystream')
stream.context = context
result = base.get_cache_key('invalid-key', stream)
assert result is None
def test_get_cache_key(self):
# OOOTransformBase instances can get cache keys
base = OOOTransformBase()
context = FakeContext()
stream = datastream('mystream')
stream.context = context
result = base.get_cache_key('some_key', stream)
assert result == 'foo'
def test_get_cache_key_no_context(self):
# objects w/o context are ignored
base = OOOTransformBase()
result = base.get_cache_key('invalid-key', None)
assert result is None
