package fifo_test

import (
	"cache/fifo"
	"github.com/matryer/is"
	"testing"
)

// TestFifo
//
//	@Description: 单元测试
//	@param t
func TestFifo(t *testing.T) {
	is := is.New(t)
	cache := fifo.New(24, nil)
	cache.DelOldest()
	cache.Set("k1", 1)
	v := cache.Get("k1")
	is.Equal(v, 1)
	cache.Del("k1")
	is.Equal(0, cache.Len())
}

// TestFifoWithCallBack
//
//	@Description: 带删除回调
//	@param t
func TestFifoWithCallBack(t *testing.T) {
	is := is.New(t)
	keys := make([]string, 8)
	onEvicted := func(key string, value any) {
		keys = append(keys, key)
	}
	cache := fifo.New(24, onEvicted)
	cache.Set("k1", int8(1))
	cache.Set("k2", int8(2))
	cache.Set("k3", int8(3))
	cache.Set("k4", int8(4))
	expected := []string{"k1", "k2"}
	is.Equal(expected, keys)
	is.Equal(2, cache.Len())
}