def setUp(self):
self.cacher = Cacher(backend=LocalBackend())
self.func = self.create_mock(return_value=[1, 2, 3, 4, 5])
self.decorated_func = CachedListFunctionDecorator(self.func, cacher=self.cacher, range=5)
class CachedListFunctionDecoratorTestCase(unittest.TestCase):
def setUp(self):
self.cacher = Cacher(backend=LocalBackend())
self.func = self.create_mock(return_value=[1, 2, 3, 4, 5])
self.decorated_func = CachedListFunctionDecorator(self.func, cacher=self.cacher, range=5)
def create_mock(self, *args, **kwargs):
mock = Mock(*args, **kwargs)
mock.__name__ = 'testing'
return mock
def test_called_the_correct_n_times(self):
self.decorated_func(1, skip=0, limit=15)
self.assertEqual(self.func.call_count, 3)
def test_called_with_correct_values(self):
self.decorated_func(1, skip=0, limit=15)
self.func.assert_any_call(1, skip=0, limit=5)
self.func.assert_any_call(1, skip=5, limit=5)
self.func.assert_any_call(1, skip=10, limit=5)
def test_return_correct_value(self):
self.assertEqual(self.decorated_func(1, skip=0, limit=8),
[1, 2, 3, 4, 5, 1, 2, 3])
self.assertEqual(self.decorated_func(1, skip=0, limit=15),
[1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5])
def test_get_ranged_cache_keys(self):
self.assertEqual(self.decorated_func.get_ranged_cache_keys(1, skip=0, limit=9),
['mock.testing:1[0:5]', 'mock.testing:1[6:10]'])
self.assertEqual(self.decorated_func.get_ranged_cache_keys(1, skip=4, limit=5),
['mock.testing:1[0:5]', 'mock.testing:1[6:10]'])
self.assertEqual(self.decorated_func.get_ranged_cache_keys(1, skip=12, limit=5),
['mock.testing:1[11:15]', 'mock.testing:1[16:20]'])
self.assertEqual(self.decorated_func.get_ranged_cache_keys(1, skip=10, limit=5),
['mock.testing:1[11:15]'])
def test_cache_stores_correct_values(self):
self.decorated_func(1, skip=0, limit=15)
self.assertEqual(self.cacher.get("mock.testing:1[0:5]"), [1, 2, 3, 4, 5])
self.assertEqual(self.cacher.get("mock.testing:1[6:10]"), [1, 2, 3, 4, 5])
self.assertEqual(self.cacher.get("mock.testing:1[11:15]"), [1, 2, 3, 4, 5])
def test_register(self):
batcher = self.cacher.create_batcher()
hook_mock = Mock()
batcher.add_hook('register', hook_mock)
with batcher:
self.decorated_func.register(1, skip=0, limit=9)
#Test the internal ranged cache keys
self.assertTrue('mock.testing:1[0:5]' in batcher.get_keys())
self.assertTrue('mock.testing:1[6:10]' in batcher.get_keys())
hook_mock.assert_called_with('mock.testing:1', batcher)
def test_invalidate(self):
batcher = self.cacher.create_batcher()
hook_mock = Mock()
self.cacher.add_hook('invalidate', hook_mock)
self.decorated_func(1, skip=0, limit=9)
self.decorated_func.invalidate(1)
#After invalidation, the backend shouldn't have anything.
self.assertEqual(self.cacher.backend.get('mock.testing:1[0:5]'), None)
self.assertEqual(self.cacher.backend.get('mock.testing:1[6:10]'), None)
hook_mock.assert_called_with('mock.testing:1')
