def test_cache_persistence(self):
"""
Checks that cache persistence behaviour is maintained.
i.e. New engines use same cache as type is 'engine'.
"""
# create engine with identical attributes to default engine
engine = create_engine(self.engine.name, self.engine.cache_type)
# create new cache for engine
c = cache.QueryCache(engine)
# store instance query/response
c.store(self.query, self.response)
# create 2nd engine with identical attributes to default engine
engine2 = create_engine(self.engine.name, self.engine.cache_type)
# create new cache for engine
c2 = cache.QueryCache(engine2)
# check that new cache has query/response available
assert_equal(c2.get(self.query), self.response)
def test_cache_keys_deleted(self):
"""
Checks that the cache keys are deleted when engine de-referenced/destroyed.
"""
# create engine with identical attributes to default engine
engine = create_engine(self.engine.name, self.engine.cache_type)
# create new cache for engine
c = cache.QueryCache(engine)
# store instance query/response
c.store(self.query, self.response)
# save key name
key = c._make_key(self.query)
# delete/de-reference cache
del c
# create new instance cache
c = cache.QueryCache(engine)
# check that saved key is no longer present
assert_equal(c.connection.exists(key), False)
def setup(self):
"""
Creates engine, cache and a query/response pair as instance attributes.
"""
# mock engine
self.engine = create_engine("TestEngine", "engine")
# create cache and flush db
self.c = cache.QueryCache(self.engine)
self.c.connection.flushdb()
# create default query/response test pair
for pair in gen_query(response=True):
self.query, self.response = pair
def setup(self):
"""
Creates engine, cache and a query/response pair as instance attributes.
Notes:
Overridden method.
"""
self.engine = create_engine("TestEngine", "instance")
self.c = cache.QueryCache(self.engine)
self.c.connection.flushdb()
for pair in gen_query(response=True):
self.query, self.response = pair