WatcherExtension

Similar to JUnit4’s TestWatcher this extension watches the test invocation without modifying it or interfering with it in any way. Instead, it just logs:

1. Test method entry
2. Test method exit
3. Test elapsed time in milliseconds

This extension uses java.util.logging.Logger so it will either play nicely with your current logging solution or there will be a bridge to allow it to do so (e.g. jul-to-slf4j).

Usage

This extension is engaged by adding the @ExtendWith(WatcherExtension.class) annotation to a test class.

Example

@ExtendWith(WatcherExtension.class)
public class MyTest {

    // entry, exit and elapsed time will be logged for every test in this test case
    
}

Output

Example output (after bridging to SLF4J):

2017-11-15 17:17:03,945|[main]|INFO |o.g.j.e.watcher.WatcherExtension|Starting test [canGet]
2017-11-15 17:17:04,167|[main]|INFO |o.g.d.http.okhttp.OkHttpClient|Get from: http://host:1234/some/end/point
2017-11-15 17:17:04,201|[main]|INFO |o.g.j.e.watcher.WatcherExtension|Completed test [canGet] in 247ms