一、eclipse建立Java project,並創建相應的包、類(calculate.java)java
二、在package explorer中右鍵new Junit Test Case,關聯相應的工程eclipse
三、選擇Junit4則會自動引入相應的包ide
四、編寫calculate類中的加減乘除函數函數
package com.calculate; public class Calculate { public int add(int a,int b) { return (a+b); }; public int subtract(int a,int b) { return (a-b); }; public int multiply(int a,int b) { return (a*b); }; public int divide(int a,int b) { if(b==0) { System.out.print("分母不能爲0"); return 0; } else { return (a/b); } }; }
五、主函數main測試
package com.calculate; public class test { public static void main(String[] args) { Calculate test=new Calculate(); System.out.println("加法運算:"+test.add(12, 13)); System.out.println("減法運算:"+test.subtract(18, 2)); System.out.println("乘法運算:"+test.multiply(2, 6)); System.out.println("除法運算:"+test.divide(4, 4)); } }
六、編寫測試用例spa
package com.calculate; import static org.junit.Assert.*; import org.junit.After; import org.junit.Before; import org.junit.Test; public class Calculatetest { Calculate mycal=new Calculate(); @Before public void setUp(){ System.out.println("測試開始"); } @After public void down() { System.out.println("測試結束"); } @Test public void testAdd() { assertEquals(8,mycal.add(2, 6)); } @Test public void testsubtract() { assertEquals(2,mycal.subtract(4,2)); assertEquals(7,mycal.subtract(9, 2)); } @Test public void testmultiply() { assertEquals(15,mycal.multiply(3, 5)); assertEquals(12,mycal.multiply(3, 4)); } @Test public void testdivide() { assertEquals(1,mycal.divide(4, 4)); assertEquals(0,mycal.divide(4, 0)); assertEquals(2,mycal.divide(4, 2)); } }
七、右鍵工程->Run as->Junit Test,若是有錯誤則滾動條會出現紅色,不然爲綠色。code
結束!blog