What's the best way to set up a per-test or per-class timeout when using <junit> in perBatch forkmode?

问题

I want to fail the build if anyone writes a test that takes longer than 1 second to run, but if I run in perTest mode it takes much, much longer.

I could probably write a custom task that parses the junit reports and fails the build based on that, but I was wondering if anyone knows or can think of a better option.

回答1:

Reviving an old question since the answer doesn't provide an example.

You can specify timeout

1. Per test method:

   @Test(timeout = 100) // Exception: test timed out after 100 milliseconds
   public void test1() throws Exception {
       Thread.sleep(200);
   }
   

2. For all methods in a test class using Timeout @Rule:

   @Rule
   public Timeout timeout = new Timeout(100);
   
   @Test // Exception: test timed out after 100 milliseconds
   public void methodTimeout() throws Exception {
       Thread.sleep(200);
   }
   
   @Test
   public void methodInTime() throws Exception {
       Thread.sleep(50);
   }
   

3. Globally for the total time to run all test methods in the class using a static Timeout @ClassRule:

   @ClassRule
   public static Timeout classTimeout = new Timeout(200);
   
   @Test
   public void test1() throws Exception {
       Thread.sleep(150);
   }
   
   @Test // InterruptedException: sleep interrupted
   public void test2() throws Exception {
       Thread.sleep(100);
   }
   

4. And even apply timeout (either @Rule or @ClassRule) to all classes in your entire suite:

   @RunWith(Suite.class)
   @SuiteClasses({ Test1.class, Test2.class})
   public class SuiteWithTimeout {
       @ClassRule
       public static Timeout classTimeout = new Timeout(1000);
   
       @Rule
       public Timeout timeout = new Timeout(100);
   }
   

EDIT: timeout was deprecated recently to utilize this initialization

@Rule
public Timeout timeout = new Timeout(120000, TimeUnit.MILLISECONDS);

You should provide the Timeunit now, as this will provide more granularity to your code.

回答2:

If you use JUnit 4 and @Test, you can specifiy the timeout parameter that will fail a tests that's taking longer than specified. Downside for that is that you'd have to add it to every test method.

A probably better alternative is the use of a @Rule with org.junit.rules.Timeout. With this, you can do it per class (or even in a shared super class).

来源：https://stackoverflow.com/questions/8743594/whats-the-best-way-to-set-up-a-per-test-or-per-class-timeout-when-using-junit