package eu.robertboloc.holaurv.test.activities; import junit.framework.TestCase; import eu.robertboloc.holaurv.activities.ReportActivity; public class ReportActivityTest extends TestCase { public void testMilisToDisplayTimeWithNegativeInput() { ReportActivity reportActivity = new ReportActivity(); String displayTime = reportActivity.milisToDisplayTime(-8400000); assertEquals("-02:20", displayTime); } }