java - 想要但没有调用mockito测试

Question

我想测试以下方法，并验证

fi.write( file ) ;

被执行。

@RequestMapping(value="UploadServlet", method=RequestMethod.POST)
public String uploadfile(HttpServletRequest request, HttpServletResponse response, HttpSession session ) throws IOException{
    filePath = "C:\\JavaWorkspace\\justbuyit\\src\\main\\webapp\\resources\\images\\";
      // maximum size that will be stored in memory
      factory.setSizeThreshold(maxMemSize);
      // Location to save data that is larger than maxMemSize.
      factory.setRepository(largefile);

      // maximum file size to be uploaded.
      upload.setSizeMax( maxFileSize );

      try{ 
      // Parse the request to get file items.
      List fileItems = upload.parseRequest(request);

      // Process the uploaded file items
      Iterator i = fileItems.iterator();

      while ( i.hasNext () ) 
      {
         FileItem fi = (FileItem)i.next();
         if ( !fi.isFormField () )  
         {
            // Get the uploaded file parameters
            String fileName = fi.getName();   
            // Write the file
            if( fileName.lastIndexOf("\\") >= 0 ){
               file = new File( filePath + 
               fileName.substring( fileName.lastIndexOf("\\"))) ;
            }else{
               file = new File( filePath + 
               fileName.substring(fileName.lastIndexOf("\\")+1)) ;
            }
            session.setAttribute("filepath","resources/images/"+fileName.substring(fileName.lastIndexOf("\\")+1) );
            fi.write( file ) ;
            request.setAttribute("filewritten", true);
            request.setAttribute("filename", fileName.substring(fileName.lastIndexOf("\\")+1));
         }
      }
   }catch(Exception ex) {
       System.out.println(ex);
   }

    return "addProduct";
   }

public void setFactory(DiskFileItemFactory factory) {
    this.factory = factory;
}

public void setUpload(ServletFileUpload upload) {
    this.upload = upload;
}

我在mockito中编写了以下测试:

@Before

public void setUp(){

    MockitoAnnotations.initMocks(this);


    uController = new UploadController();
}

@Test

public void testWriteCommandGetsExecutes() throws Exception{


    uController.setFactory(factory);
    uController.setUpload(upload);
    when(i.hasNext()).thenReturn(false);
    when((FileItem)i.next()).thenReturn(fi);
    when(fi.isFormField()).thenReturn(false);
    uController.uploadfile(request, response, session);
    verify(fi).write(file);
}}

但是我收到错误

wanted but not invoked: fi.write( file ) 

在我的报道中，这条线显示为黄色:

while ( i.hasNext () ) 

问题是什么？

Answer 1

如David Perez Cabrera和 striker评论中提到，您似乎希望您的 block 返回 true，然后返回 false。 Mockito 支持多种语法选择，因此其中任何一个都应该有效:

when(i.hasNext()).thenReturn(true, false);

或

when(i.hasNext()).thenReturn(true).thenReturn(false);

供将来引用，Mockito 的行为是按顺序执行操作，然后永远重复最后一个操作，这意味着对上面 stub 的 hasNext 的调用将返回 true， false、false、false 等，而不是 true、false、 true、false、true 等等。