Eclipse中怎么使用junit测试
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发布时间：2022-04-22 08:57
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时间：2024-01-15 12:36
以下以银行余额、存款、取款为例
一、Junit配置
Junit同Eclipse一同提供，无需下载。要使用Junit必须先将Junit jar 保存在项目的build路径上，并创建一个测试类，步骤如下：
1）法一：
法二：点击项目test001，右键-propreties
2）选择Libraries，点击Add variable按钮，输入变量名JUNIT_LIB，路径：E:\测试\测试工具\Juint\eclipse\eclipse-jee-kepler-SR2-win32\eclipse\plugins\org.junit_4.11.0.v201303080030，结果如下图：
二、编写测试类和代码、执行测试用例
1）新建测试类：New-Junit Test Case
2）编写测试代码：
1 package testsample; 2 3 import org.junit.After; 4 import org.junit.Before; 5 import junit.framework.TestCase; 6 public class Tc_Account extends TestCase { 7 8 public Tc_Account(String arg0) 9 {10 super(arg0);11 }12 @Before13 public void setUp() throws Exception {14 super.setUp() ;15 }16 public void testDeposit(){17 Account account=new Account();18 assertEquals("Account should start with no funds.",1,account.balance());19 20 account.deposit(5);21 assertEquals("Account should reflect deposit.", 7, account.balance());22 }23 24 public void testwithdraw(){25 Account account=new Account();26 account.deposit(5);27 account.withdraw(3);28 assertEquals("Account should reflect withdarw.", 3, account.balance());29 }30 31 @After32 public void tearDown() throws Exception {33 super.tearDown();34 }35 }
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3）新建Acoount类，实现银行的余额、存款、取款：
1 package testsample; 2 3 public class Account { 4 protected int balance; 5 public int balance(){ 6 return balance;
7 } 8 public void deposit(int amount){ 9 balance+=amount;10 }11 public void withdraw(int amount){12 balance-=amount;13 }14 }
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4）执行测试用例：右键项目testsample-Run as-Junit Test Case，通过failure trace可以查看错误信息
5）调整测试用例中的预期值：
1 package testsample; 2 3 import org.junit.After; 4 import org.junit.Before; 5 import junit.framework.TestCase; 6 public class Tc_Account extends TestCase { 7 8 public Tc_Account(String arg0) 9 {10 super(arg0);11 }12 @Before13 public void setUp() throws Exception {14 super.setUp() ;15 }16 public void testDeposit(){17 Account account=new Account();18 assertEquals("Account should start with no funds.",0,account.balance());19 20 account.deposit(5);21 assertEquals("Account should reflect deposit.", 5, account.balance());22 }23 24 public void testwithdraw(){25 Account account=new Account();26 account.deposit(5);27 account.withdraw(3);28 assertEquals("Account should reflect withdarw.", 2, account.balance());29 }30 31 @After32 public void tearDown() throws Exception {33 super.tearDown();34 }35 }
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6）执行测试用例，结果如下：所有测试通过
