@Test public void testBusinessKeyConstant() { // given: String businessKey = "myBusinessKey"; ExtensionElements extensionElements = addExtensionElements(caseTask); CamundaIn businessKeyElement = createElement(extensionElements, null, CamundaIn.class); businessKeyElement.setCamundaBusinessKey(businessKey); // when CmmnActivity activity = handler.handleElement(planItem, context); // then CaseTaskActivityBehavior behavior = (CaseTaskActivityBehavior) activity.getActivityBehavior(); CallableElement callableElement = behavior.getCallableElement(); ParameterValueProvider businessKeyValueProvider = callableElement.getBusinessKeyValueProvider(); assertNotNull(businessKeyValueProvider); assertTrue(businessKeyValueProvider instanceof ConstantValueProvider); assertEquals(businessKey, businessKeyValueProvider.getValue(null)); }