单元测试示例

在写程序的时候单元测试十分重要，下面是求数组最大值的代码实现和单元测试部分以及结果截屏

import java.util.Scanner;
public class Test {
    public static void main(String[] args){
        int a[]={1,2,3,4,5,6};
        judge(Largest(a,6));
        int a2[]={9,4,0,2,5,10};
        judge(Largest(a2,6));
        int[] a3={000,-1,-88,3,000,999};
        judge(Largest(a3,6));
        int a4[]={};
        judge(Largest(a4,0));
        int[] a5=new int[5];
        judge(Largest(a5,5));
        while(1>0){
            System.out.println( "
请输入数组的长度");
            Scanner sc2=new Scanner(System.in);
            int length=sc2.nextInt();
            int A[]=new int[length];
            System.out.println( "请输入一个数组");
            Scanner sc=new Scanner(System.in);
            for(int i=0;i<length;i++)
            {
                 A[i]=sc.nextInt();
            }
            judge(Largest(A,length));            
        }
    }
    public static int Largest(int list[],int length){    
        if(list==null||length==0){
                return 0;
        }
        int i,max=list[0];
        for(i=0;i<length;i++){
            if(list[i]>max){
                max=list[i];
            }
        }
        System.out.print( "
"+max);
        return 1;
    }
    public static void judge(int i){
        if(i==0){
            System.out.print( "
数组为空！");
        }
        else{
            System.out.print( "是最大值");
        }
    }
}

可知在

这几个测试数组运行结果为：