public void GetCollection_with_caching_enabled_expect_correct_cacheKey_retrieved()
{
_config.Stub(c => c.Cache).Return(CacheStub);
_config.EnableCaching = true;
var helper = new CacheHelper<FakeObject>(_config);
helper.GetCollection();
_config.Cache.AssertWasCalled(c => c.Get(FakeObject.RootCacheKey));
}