PowerMock学习(六)之Mock Final的使用
久曲健 人气:0Mock Final
mockfinal相对来说就比较简单了,使用powermock来测试使用final修饰的method或class,比较简单,接口调用部分,还是service调用dao。
对于接口及场景这里就不细说了,特别简单。
service层
具体代码示例如下:
package com.rongrong.powermock.mockfinal; /** * @author rongrong * @version 1.0 * @date 2019/11/27 21:29 */ public class StudentFinalService { private StudentFinalDao studentFinalDao; public StudentFinalService(StudentFinalDao studentFinalDao) { this.studentFinalDao = studentFinalDao; } public void createStudent(Student student) { studentFinalDao.isInsert(student); } }
dao层
为了模拟测试,我在dao层的类加了一个final关键字进行修饰,也就是这个类不允许被继承了。
具体代码如下:
package com.rongrong.powermock.mockfinal; /** * @author rongrong * @version 1.0 * @date 2019/11/27 21:20 */ final public class StudentFinalDao { public Boolean isInsert(Student student){ throw new UnsupportedOperationException(); } }
进行单元测试
为了区分powermock与Easymock的区别,我们先采用EasyMock测试,这里先忽略EasyMock的用法,有兴趣的同学可自行去尝试学习。
使用EasyMock进行测试
具体代码示例如下:
@Test public void testStudentFinalServiceWithEasyMock(){ //mock对象 StudentFinalDao studentFinalDao = EasyMock.createMock(StudentFinalDao.class); Student student = new Student(); //mock调用,默认返回成功 EasyMock.expect(studentFinalDao.isInsert(student)).andReturn(true); EasyMock.replay(studentFinalDao); StudentFinalService studentFinalService = new StudentFinalService(studentFinalDao); studentFinalService.createStudent(student); EasyMock.verify(studentFinalDao); }
我们先来运行下这个单元测试,会发现运行报错,具体如下图显示:
很明显由于有final关键字修饰后,导致不能让测试成功,我们可以删除final关键再来测试一下,结果发现,测试通过。
使用PowerMock进行测试
具体代码示例如下:
package com.rongrong.powermock.mockfinal; import org.junit.Test; import org.junit.runner.RunWith; import org.mockito.Mockito; import org.powermock.api.mockito.PowerMockito; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.junit4.PowerMockRunner; /** * @author rongrong * @version 1.0 * @date 2019/11/27 22:10 */ @RunWith(PowerMockRunner.class) @PrepareForTest(StudentFinalDao.class) public class TestStudentFinalService { @Test public void testStudentFinalServiceWithPowerMock(){ StudentFinalDao studentFinalDao = PowerMockito.mock(StudentFinalDao.class); Student student = new Student(); PowerMockito.when(studentFinalDao.isInsert(student)).thenReturn(true); StudentFinalService studentFinalService = new StudentFinalService(studentFinalDao); studentFinalService.createStudent(student); Mockito.verify(studentFinalDao).isInsert(student); } }
运行上面的单元测试时,会发现运行通过!!
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