Details
Recommendation type: Additional threads
Configurable in Preferences: Yes
Filter category: Unstable test environment
Description
Avoid writing test cases with side effects. Additional threads may change the state of your system and cause random test failures.
Example
@Test public void testChangeState() throws Exception { new Thread(new Runnable() { public void run() { System.out.println("foo"); } }).start(); State initialState = new State("state", 2); // Given TrackableMethodExample underTest = new TrackableMethodExample(initialState); // When State newState = new State("state changed", 10); ResultStatus result = underTest.changeState(newState); Assert.assertNotNull(result); }