package utils import ( "fmt" "testing" ) func TestCutLength(t *testing.T) { s := "Hero" fmt.Println(CutLength(s, 2)) r := []rune(s) fmt.Println(string(r[:2])) s = "中国人" fmt.Println(CutLength(s, 2)) s = "我是中国人" fmt.Println(CutLength(s, 5)) r = []rune(s) fmt.Println(string(r[:5])) }