Function TestHashCollision

bigcache_test.go:1020–1060

(t *testing.T)

}

func TestHashCollision(t *testing.T) {
	t.Parallel()

	ml := &mockedLogger{}
	// given
	cache, _ := New(context.Background(), Config{
		Shards:             16,
		LifeWindow:         5 * time.Second,
		MaxEntriesInWindow: 10,
		MaxEntrySize:       256,
		Verbose:            true,
		Hasher:             hashStub(5),
		Logger:             ml,
	})

	// when
	cache.Set("liquid", []byte("value"))
	cachedValue, err := cache.Get("liquid")

	// then
	noError(t, err)
	assertEqual(t, []byte("value"), cachedValue)

	// when
	cache.Set("costarring", []byte("value 2"))
	cachedValue, err = cache.Get("costarring")

	// then
	noError(t, err)
	assertEqual(t, []byte("value 2"), cachedValue)

	// when
	cachedValue, err = cache.Get("liquid")

	// then
	assertEqual(t, ErrEntryNotFound, err)
	assertEqual(t, []byte(nil), cachedValue)

	assertEqual(t, "Collision detected. Both %q and %q have the same hash %x", ml.lastFormat)
	assertEqual(t, cache.Stats().Collisions, int64(1))
}

func TestNilValueCaching(t *testing.T) {
	t.Parallel()