c.mu.Lock()
	defer c.mu.Unlock()
	if ent, ok := c.items[key]; ok {
		c.removeElement(ent)
		return true
	}
	return false
}

// RemoveOldest removes the oldest item from the cache.
func (c *LRU[K, V]) RemoveOldest() (key K, value V, ok bool) {
	c.mu.Lock()
	defer c.mu.Unlock()
	if ent := c.evictList.Back(); ent != nil {
		c.removeElement(ent)
		return ent.Key, ent.Value, true
	}

	}
}

func TestLRURemoveOldest(t *testing.T) {
	lc := lru.NewLRU[string, string](2, nil, 0)

	if lc.Cap() != 2 {
		t.Fatalf("expect cap is 2")
	}

	k, v, ok := lc.RemoveOldest()
	if k != "" {
		t.Fatalf("should be empty")
	}
	if v != "" {
		t.Fatalf("should be empty")
	}
	if ok {
		t.Fatalf("should be false")
	}

	ok = lc.Remove("non_existent")
	if ok {