You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: util_test.go
    path of file: ./repos/kubeedge/pkg/util
    
    the code of the file until where you have to start completion: package util

import (
	"errors"
	"fmt"
	"net"
	"reflect"
	"strings"
	"testing"
)

func TestValidateNodeIP(t *testing.T) {
	hostnameOverride := GetHostname()
	localIP, _ := GetLocalIP(hostnameOverride)

	cases := []struct {
		name     string
		ip       net.I
    
func TestSpliceErrors(t *testing.T) {
	err1 := errors.New("this is error 1")
	err2 := errors.New("this is error 2")
	err3 := errors.New("this is error 3")

	const head = "[\n"
	var line1 = fmt.Sprintf("  %s\n", err1)
	var line2 = fmt.Sprintf("  %s\n", err2)
	var line3 = fmt.Sprintf("  %s\n", err3)
	const tail = "]\n"

	sliceOutput := SpliceErrors([]error{err1, err2, err3})
	if strings.Index(sliceOutput, head) != 0 ||
		strings.Index(sliceOutput, line1) != len(head) ||
		strings.Index(sliceOutput, line2) != len(head+line1) ||
		strings.Index(sliceOutput, line3) != len(head+line1+line2) ||
		strings.Index(sliceOutput, tail) != len(head+line1+line2+line3) {
		t.Error("the func format the multiple elements error slice unexpected")
		return
	}

	if SpliceErrors([]error{}) != "" || SpliceErrors(nil) != "" {
		t.Error("the func format the zero-length error slice unexpected")
		return
	}
}