### Question:
DefaultHandler implements IAssessmentHandler { @Override public String populateQuestion(String body) { return body; } private  DefaultHandler(); static IAssessmentHandler getInstance(); @Override String populateQuestion(String body); @Override String populateAnswer(String answer);  }### Answer:
@Test public void populateSAQuestion() throws Exception { handler = AssessmentItemFactory.getHandler("reference"); String questionString = handler.populateQuestion(HandlerImplData.saBodyString); Assert.assertNotNull(questionString); Assert.assertTrue(StringUtils.isNoneBlank(questionString)); }
@Test public void populateLAQuestion() throws Exception { handler = AssessmentItemFactory.getHandler("reference"); String questionString = handler.populateQuestion(HandlerImplData.laBodyString); Assert.assertNotNull(questionString); Assert.assertTrue(StringUtils.isNoneBlank(questionString)); }
@Test public void populateVSAQuestion() throws Exception { handler = AssessmentItemFactory.getHandler("reference"); String questionString = handler.populateQuestion(HandlerImplData.vsaBodyString); Assert.assertNotNull(questionString); Assert.assertTrue(StringUtils.isNoneBlank(questionString)); }