package pkg

import (
	"crypto/md5"
	"fmt"
	"os"
	"path/filepath"
	"testing"
)

func TestFileMD5(t *testing.T) {
	t.Log(FileMD5("test.txt"))

	readFile, err := os.ReadFile("test.txt")
	if err != nil {
		t.Fatal(err)
	}
	t.Log(fmt.Sprintf("%x", md5.Sum(readFile)))
}

func TestS(t *testing.T) {
	t.Run("复用数组", func(t *testing.T) {
		fns := []string{"11", "22"}

		for idx, fn := range fns {
			if idx == 0 {
				fns = fns[0:0]
			}
			t.Log(len(fns), cap(fns))
			fns = append(fns, fn+"::")
		}

		t.Log(len(fns), cap(fns), fns)
	})

	t.Run("for range 改变数组", func(t *testing.T) {
		arr := []int{11, 22, 33}

		for idx, v := range arr {
			if idx < len(arr)-1 {
				arr[idx+1]++
			}
			t.Log(v)
		}
	})
}

func TestScan(t *testing.T) {
	var (
		err  error
		head string
	)
	err = DirScan("../data", func(dir string, info os.FileInfo) {
		if info.IsDir() {
			head = "-"
		} else {
			head = "|"
		}
		t.Log(head, filepath.Join(dir, info.Name()), "size(byte):", info.Size())
	})
	if err != nil {
		t.Fatal(err)
	}
}