单元测试框架 powermock

单元测试框架 powermock

 

 

在 pom.xml 加入依赖包:

  <properties>
    <powermock.version>2.0.9</powermock.version>
  </properties>

 

<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito2</artifactId>
<version>${powermock.version}</version>
    <scope>test</scope>
<exclusions>
<exclusion>
<artifactId>javassist</artifactId>
<groupId>org.javassist</groupId>
</exclusion>
<exclusion>
<artifactId>objenesis</artifactId>
<groupId>org.objenesis</groupId>
</exclusion>
<exclusion>
<artifactId>mockito-core</artifactId>
<groupId>org.mockito</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
<exclusions>
<exclusion>
<artifactId>javassist</artifactId>
<groupId>org.javassist</groupId>
</exclusion>
<exclusion>
<artifactId>objenesis</artifactId>
<groupId>org.objenesis</groupId>
</exclusion>
</exclusions>
</dependency>



在测试类中引入相关的依赖类:
  import org.powermock.api.mockito.PowerMockito;
  import org.powermock.core.classloader.annotations.PrepareForTest;
  import org.powermock.modules.junit4.PowerMockRunner;



在类头上加入注解:

指定运行器的注意:
  @RunWith ( 类名.class )
  如:
  @RunWith ( PowerMockRunner.class )


静态类预加载的注解:
    多个用英文状态下的逗号分隔
  @PrepareForTest ( value = { 静态类名.class, 静态类名.class, 静态类名.class } )
  如:
  @PrepareForTest ( value = { SpringContextAware.class, BeanUtil.class, IoUtil.class } )



注入静态类:
  PowerMockito.mockStatic(静态类名.class);
  如:
  PowerMockito.mockStatic(IoUtil.class);



模拟静态方法:

  when(IoUtil.readUtf8(file.getInputStream())).thenReturn("读取文件");
  或
  PowerMockito.when(IoUtil.readUtf8(file.getInputStream())).thenReturn("读取文件");
 
注入属性:

  @InjectMocks
  private RoleServiceImpl roleServiceImpl;


  @Mock
  private RoleMapper roleMapper;


  @Before
  public void setUp () {
    MockitoAnnotations.initMocks(this);


    FieldSetter.setField(roleServiceImpl, Whitebox.getField(RoleServiceImpl.class, "roleMapper"), roleMapper);  // 解决多层依赖注入和双重依赖注入不是同一个实例的问题。
  }


 

 

 

模拟文件: 

  import org.springframework.mock.web.MockMultipartFile;
  import org.springframework.web.multipart.MultipartFile;

 

  // 文件的内容推荐至少 2 行,因为 Spring 读取文件时将首行默认为头(head),如果读取不到第二行认为没有内容。

  MultipartFile multipartFile = new MockMultipartFile("user.csv", "1\n2".getBytes());  

  或

  MultipartFile multipartFile = new MockMultipartFile("user.csv", "originalFilename", "contentType", "1\n2".getBytes());

   或

  MultipartFile multipartFile = PowerMockito.mock(MultipartFile.class);

 

  try {
    PowerMockito.when(multipartFile.getInputStream()).thenReturn(null);
    PowerMockito.when(multipartFile.getOriginalFilename()).thenReturn("originalFilename.csv");
  } catch (Exception e) {
  }

 

 



 
posted @ 2024-08-13 15:34  hapday  阅读(7)  评论(0编辑  收藏  举报