Junit-每次测试结束时的方法

Question

I got a method that I call at the end of every test to reset the streams positions.

Test{
[....]
reset();
}

Is there any elegant way to avoid such a repetition?

Answer 1

Try @After annotaton, that goes with JUnit. Example from source:

 public class Example {
    File output;
    @Before public void createOutputFile() {
          output= new File(...);
    }
    @Test public void something() {
          ...
    }
    @After public void deleteOutputFile() {
          output.delete();
    }
 }

Answer 2

the other answers suggest the @After annotation on a public method (preferably with name teardown ) which is technically right and a good answer to your question.

But essential properties of unittests is that they need to be fast and independent of each other.

Therefore the better approach is to use a fresh mock of the stream with every test. This is best done by using a mocking framework like Mockito, JMock or alike.

Answer 3

是的，使用@After注释创建新方法。

Answer 4

您应该使用@After注释-表示在每个方法运行结束时都需要完成一些操作。

Answer 5

Use @After annotation.

@Test 
public void testSomething() {
   // test goes here
}

@After 
public void doSomethingAfterTest() {
   // reset
}

Answer 6

As others have pointed out, there are the @s: Before and After . Class instance methods with these annotations will run before/after every test case.

There is also BeforeClass and AfterClass , which I didn't see anyone point out yet. These @s may be put onto static methods of your class, and those methods will execute before and after all of the tests in your class have completed. It is handy in certain situations.