JUnit测试用例需要测试目录

Question

我很难搞清楚如何测试我自己创建并导入到工程文件中的目录。

目前我有：

File file = new File(ExplorerView.class.getResource("/ExplorerViewTestFolder")); 

我敢从这里试图抢来测试

ExplorerView explorer = new ExplorerView(); 

explorer.countFilesAndFolders("/ExplorerViewTestFolder"); 

EDIT2：改到

public class ExplorerViewTests { 

@Test 
public void testCountFilesAndFolders() { 

    ExplorerView explorer = new ExplorerView(); 

    explorer.countFilesAndFolders("/ExplorerViewTestFolder"); 


} 

错误：

EDIT3：

EDIT4：

public int countFilesAndFolders(File f) { 
    if (f.isFile()) { 
     return 1; 
    } else { 
     int total = 0; 

     for (File file : f.listFiles()) { 
      if (file.isHidden() == false) { 
       total += countFilesAndFolders(file); 
      } 
     } 
     return total + 1; 
    } 
} 

Answer 1

一个简单的JUnit测试看起来是这样的：

import static org.junit.Assert.assertEquals; 

import org.junit.Test; 

public class MyTests { 

    @Test 
    public void directoryTest() { 

     // ExplorerView class is tested 
     ExplorerView explorer = new ExplorerView(); 

     explorer.countFilesAndFolders("ExplorerViewTestFolder"); 

     // assert statements 
     assertEquals("filecount must be same ", 12, explorer.getNumberFiles()); 
     assertEquals("directorycount must be same ", 2, explorer.getNumberDirectories()); 
    } 

} 

如果assertEquals计算为真 - 如果explorer.getNumberFiles() == 12和explorer.getNumberDirectories() == 2，然后JUnit测试将传递。否则，他们会失败。