Java单元测试

单元测试在总代码前面加`Before`以及在最后加`After`

测试的文件：

测试上面文件的代码

package net.sherry.test;

import net.sherry.op.ArithmeticOperation;
import org.junit.Test;


public class TestArithmeticOperation {
    @Test
    public void testSum () {
        int a = 100;
        int b = 200;
        int s = ArithmeticOperation.sum(a, b);
        System.out.println("sum = " + s);
    }
    @Test
    public void testdifference (){
        int a = 150;
        int b = 100;
        int c = ArithmeticOperation.difference(a, b);
        System.out.println("difference = " + c);
    }
    @Test
    public void testproduct () {
        int a = 3;
        int b = 300;
        int c = ArithmeticOperation.product(a, b);
        System.out.println("product = " + c);
    }
    @Test
    public void testquotient (){
        int a = 300;
        int b = 3;
        int c = ArithmeticOperation.quotient(a, b);
        System.out.println("quotient = " + c);
    }
}

测试结果：
在总代码前面加Before以及在最后加After

那么就会在每一次测试之后会有Before和After的测试代码