前置步骤

引入依赖

<dependencies>    <dependency>        <groupId>org.powermock</groupId>        <artifactId>powermock-module-junit4</artifactId>        <version>2.0.0</version>        <scope>test</scope>    </dependency>    <dependency>        <groupId>org.powermock</groupId>        <artifactId>powermock-api-mockito2</artifactId>        <version>2.0.0</version>        <scope>test</scope>    </dependency></dependencies>

减少覆盖率扫描插件

我的项目须要被扫描到，须要在我的项目外层 pom 文件增加如下配置：

<profiles>    <profile>        <id>coverage</id>        <activation>            <activeByDefault>true</activeByDefault>        </activation>        <build>            <plugins>                <plugin>                    <groupId>org.jacoco</groupId>                    <artifactId>jacoco-maven-plugin</artifactId>                    <version>0.8.4</version>                    <executions>                        <execution>                            <id>prepare-agent</id>                            <goals>                                <goal>prepare-agent</goal>                            </goals>                        </execution>                        <execution>                            <id>report</id>                            <goals>                                <goal>report</goal>                            </goals>                        </execution>                    </executions>                </plugin>            </plugins>        </build>    </profile></profiles>

常见示例

Mock 类本人的私有办法

@Testpublic void testMockPublicMethod(){    UserServiceImpl userService1=PowerMockito.spy(userServiceImpl);    PowerMockito.doReturn("mockPublicMethod").when(userService1).publicMethod(any());    String result=userService1.mockPublicMethod(new UserBO());    Assert.assertEquals("mockPublicMethod",result);}

Mock 类本人的 Final 私有办法

@Test    public void testMockPublicFinalMethod(){    UserServiceImpl userService1=PowerMockito.spy(userServiceImpl);    PowerMockito.doReturn("mockFinalPublicMethod").when(userService1).finalPublicMethod(any());    String result=userService1.mockFinalPublicMethod(new UserBO());    Assert.assertEquals("mockFinalPublicMethod",result);}

Mock 类本人的公有办法

@Testpublic void testMockPrivateMethod()throws Exception{    UserServiceImpl userService1=PowerMockito.spy(userServiceImpl);    PowerMockito.doReturn("mockPrivateMethod").when(userService1,"privateMethod",any());    String result=userService1.mockPrivateMethod(new UserBO());    Assert.assertEquals("mockPrivateMethod",result);}

Mock 类本人的公有静态方法

@Testpublic void testMockPrivateStaticMethod()throws Exception{    PowerMockito.mockStatic(UserServiceImpl.class);    PowerMockito.doReturn("mockPrivateStaticMethod").when(UserServiceImpl.class,"privateStaticMethod",any());    String result=userServiceImpl.mockPrivateStaticMethod(new UserBO());    Assert.assertEquals("mockPrivateStaticMethod",result);}

Mock 类本人的私有静态方法

@Testpublic void testMockPublicStaticMethod(){    PowerMockito.mockStatic(UserServiceImpl.class);    PowerMockito.when(UserServiceImpl.publicStaticMethod(any())).thenReturn("mockPublicStaticMethod");    String result=userServiceImpl.mockPublicStaticMethod(new UserBO());    Assert.assertEquals("mockPublicStaticMethod",result);}

Mock 父类的办法

@Testpublic void testMockParentMethod() {    UserServiceImpl userService1 = PowerMockito.spy(userServiceImpl);    PowerMockito.doReturn("mockParentMethod").when(userService1).parentMethod(any());    String result = userService1.mockParentMethod(new UserBO());    Assert.assertEquals("mockParentMethod", result);}

Mock 依赖的对象办法

@Testpublic void testMockMapper() {    UserDO userDO = new UserDO();    userDO.setName("mockMapper");    PowerMockito.when(userMapper.getById(anyLong())).thenReturn(userDO);    String result = userServiceImpl.getUserName(1000L);    Assert.assertEquals("mockMapper", result);}

论断

以上代码都能够在 powermock-demo 中找到。