reactjs - ReactComponent is not rendering properly -


i have react component simple to-do app

where i've edit button on each todo list, whenever click edit button, function set state of todo new property called "edit" true whenever todo has edit=true, i'm displaying edit form,the functionality works expected, but, i'm not sure way test using jest + enzyme

import react 'react'; import { shallow, mount } 'enzyme'; import renderer 'react-test-renderer'; import app '../components/app'; import task '../components/task'; import edittaskform '../components/edittaskform';   describe(task, () => {      // added allow lifecycles, bydefault enzyme wont execute lifecylce methods      const options = {          lifecycleexperimental: true,          disablelifecyclemethods: false         };        const removetask = jest.fn();        const markcomplete = jest.fn();       const setcurrenttaskeditable = jest.fn();       const updatetask = jest.fn();       const index = "task1";       const task =  {         task: 'everyones favorite white task. cut size need , ship it.',         status: 'in_progress'     };      const appcomponent = shallow(<app/>, options);     const currenttaskkey = object.keys(appcomponent.state('tasks'))[0];     let currenttask = appcomponent.state('tasks')[object.keys(appcomponent.state('tasks'))[0]];     const component = mount(<task key={currenttaskkey} index={currenttaskkey} task={currenttask } removefromtask={removetask} markasdone={markcomplete}  setcurrenttaskeditable={setcurrenttaskeditable} updatetask={updatetask}/>);      it('renders , matches snapshot', () => {         const component = renderer.create(<task key={index} index={index} task={ task } removefromtask={removetask} markasdone={markcomplete}  setcurrenttaskeditable={setcurrenttaskeditable} updatetask={updatetask}/>);         const tree = component.tojson();         expect(tree).tomatchsnapshot();     });       it('should not contain edittaskform subcomponent', () => {         expect(component.find(edittaskform)).tohavelength(0);     });      it('should contain edit, markcomplet , remove task buttons', () => {       expect(component.find('button')).tohavelength(3);     });      it('should display editform when click edit button', () => {         component.find('button.edittask').simulate('click');         expect(setcurrenttaskeditable).tobecalled();         appcomponent.instance().setcurrenttaskeditable(index); // state updated expect         expect(component.find(edittaskform)).tohavelength(1); // here component not updating     });  });

source code: https://github.com/loganathan-s/todoappwithreact/commits/develop


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