lru.Add("key1", 1)
	lru.Add("key1", 2)

	if value, ok := lru.Get("key1"); !ok || value != 2 {
		t.Errorf("Expected value to be updated to 2, got %v", value)
	}
}

func TestLRU_Add_NewKey_AddsEntry(t *testing.T) {
	lru := lru.NewLRU[string, int](10, nil, time.Hour)
	lru.Add("key1", 1)

	if value, ok := lru.Get("key1"); !ok || value != 1 {
		t.Errorf("Expected key1 to be added with value 1, got %v", value)