java junit

Question

请问怎么用 junut测试工具测试代码啊？

Answer 1

新建一个class，新建一个方法，加上Test注释，写完之后，run as junit Test
给你举个例子吧：
//实现图片的复制
@Test
public void testImgCopy() throws Exception{
File f = new File("/Users/lixiuming/Desktop/商品详情图片/detail-1.jpg");
FileInputStream fis = new FileInputStream(f);
File out = new File("/Users/lixiuming/Desktop/project/day_15/detail-1.jpg");
FileOutputStream fos = new FileOutputStream(out);
byte[] b= new byte[1024];
int len;
while((len = fis.read(b)) != -1){
fos.write(b, 0, len);
}
}