@Test public void testBuildMessage() { GroupRequest request = new GroupRequest(); GroupSendHandler handler = new GroupSendHandler(); StringBuilder builder = new StringBuilder(); String e = "<CompanyID>1</CompanyID>"; Operator key = new Operator("1", "2"); Phone phone = new Phone(); handler.buildMessage(phone, request, key, builder); Assert.assertEquals(e, builder.toString()); builder = new StringBuilder(); request.setGroupId("1"); e = "<CompanyID>1</CompanyID><GroupID>1</GroupID>"; handler.buildMessage(phone, request, key, builder); Assert.assertEquals(e, builder.toString()); }