}
			if store.endIndex != test.startIndex+test.eventCount {
				t.Errorf("expect endIndex %d get %d", test.startIndex+test.eventCount, store.endIndex)
			}
			if !checkCacheElements(store) {
				t.Errorf("some elements locations in cache is wrong")
			}
		})
	}
}

func loadEventWithDuration(cache *testWatchCache, count int, interval time.Duration) {
	for i := 0; i < count; i++ {