def test_dependents(self):
dependent_cache_name = self.check_cache_gone('dependent')
dependent_cache = PersistentCache(dependent_cache_name, cache_manager=self.manager)
parent_cache_name = self.check_cache_gone('parent')
parent_cache = PersistentCache(parent_cache_name, cache_manager=self.manager, dependents=[dependent_cache])
dependent_cache['foo'] = 'bar'
parent_cache.save(True)
dependent_cache['foo'] = 'saved'
parent_cache.load(True)
self.assertEqual(dependent_cache['foo'], 'bar')
dependent_cache['foo'] = 'invalid'
parent_cache.invalidate(True)
self.assertEqual(dependent_cache['foo'], 'bar')
parent_cache.delete_saved_content(True)
parent_cache.load(True)
self.assertIsNone(dependent_cache.contents)
parent_cache.load_or_build(True)
self.assertDictEqual(dependent_cache.contents, {})
dependent_cache['foo'] = 'bar'
dependent_cache.save()
parent_cache.invalidate_and_rebuild(True)
self.assertDictEqual(dependent_cache.contents, {})
def test_invalidate_and_rebuild(self):
cache_name = self.check_cache_gone('invalidate_rebuild')
cache = PersistentCache(cache_name, cache_manager=self.manager, contents={ 'foo': 'bar' })
cache.save()
cache.invalidate_and_rebuild()
self.assert_contents_equal(cache, {})
cache.load() # Saved content should get replaced
self.assert_contents_equal(cache, {})
def test_content_driven_cache_wrap(self):
cache_name = self.check_cache_gone('content')
# Pass a non-empty list as content
cache = PersistentCache(cache_name, cache_manager=self.manager, contents=[''],
builder=lambda *args: [])
cache[0] = 'foo'
cache.append('bar')
cache.save()
cache.load()
self.assertTrue(isinstance(cache, PersistentCache))
self.assertTrue(isinstance(cache.contents, list))
self.check_cache(cache_name, True)
self.assertEqual(cache[0], 'foo')
self.assertEqual(cache[1], 'bar')
cache.invalidate_and_rebuild()
self.assertTrue(isinstance(cache, PersistentCache))
self.assertTrue(isinstance(cache.contents, list))
self.assert_contents_equal(cache, [])