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: merge-n-slices_test.go
    path of file: ./repos/go101/pages/optimizations/code/3-array-and-slice
    
    the code of the file until where you have to start completion: package arrays

import "testing"
import "math/rand"
import "time"

var ss [][]byte
var r []byte

func init() {
	rand.Seed(time.Now().UnixNano())
	
	ss = make([][]byte, 6)
	for i := range ss {
		// Before Go 1.17, if the length of the merged result slice is not larger than 32768,
		// MergeN_MakeCopy is more performant, otherwise, MergeN_Orderless is more performant.
		const N = 10000
		if i == len(ss) - 1 {
			ss[i] = make([]byte, N * i * 5)
		} else {
			ss[i] = make([]byte, N * i)
		}
		for k := range ss[i] {
			ss[i][k] = byte(rand.Int())
		}
	}
	var n = 0
	for _, s := range ss {
		n += len(s)
	}
	s1 := MergeN_MakeCopy(ss...)
	s2 := MergeN_MakeAppend(ss...)
	s3 := MergeN_MakeCopyAppend(ss...)
	s4 := MergeN_Orderless(ss...)
	if len(s1) != n {
		panic("len(s1) != n")
	}
	if len(s2) != n {
		panic("len(s2) != n")
	}
	if len(s3) != n {
		panic("len(s3) != n")
	}
	if len(s4) != n {
		panic("len(s4) != n")
	}
	// If this if-block is enabled, then the
	// function MergeN_MakeCopyAppend will
	// consume less CP
    
func init() {
	rand.Seed(time.Now().UnixNano())
	
	ss = make([][]byte, 6)
	for i := range ss {
		// Before Go 1.17, if the length of the merged result slice is not larger than 32768,
		// MergeN_MakeCopy is more performant, otherwise, MergeN_Orderless is more performant.
		const N = 10000
		if i == len(ss) - 1 {
			ss[i] = make([]byte, N * i * 5)
		} else {
			ss[i] = make([]byte, N * i)
		}
		for k := range ss[i] {
			ss[i][k] = byte(rand.Int())
		}
	}
	var n = 0
	for _, s := range ss {
		n += len(s)
	}
	s1 := MergeN_MakeCopy(ss...)
	s2 := MergeN_MakeAppend(ss...)
	s3 := MergeN_MakeCopyAppend(ss...)
	s4 := MergeN_Orderless(ss...)
	if len(s1) != n {
		panic("len(s1) != n")
	}
	if len(s2) != n {
		panic("len(s2) != n")
	}
	if len(s3) != n {
		panic("len(s3) != n")
	}
	if len(s4) != n {
		panic("len(s4) != n")
	}
	// If this if-block is enabled, then the
	// function MergeN_MakeCopyAppend will
	// consume less CPU in the benchmark results.
	//
	//if len(MergeN_Orderless(ss)) != n {
	//	panic("len(s4) != n")
	//}
	for i := 0; i < n; i++ {
		if s1[i] != s2[i] {
			panic("s1[i] != s2[i]")
		}
		if s1[i] != s3[i] {
			panic("s1[i] != s3[i]")
		}
	}
}