Sources Contact Advanced Search Tutorials

An Interest In:

Web News this Week

Search Archive

Some of Our Sources

View All Sources

Help Webnuz

Referal links:

January 13, 2022 06:26 pm GMT

To do list app with react typescript and react testing library

Using typescript and testing code with react testing library

Typescript really makes it easy for developers to know the type of variables and return type of the functions which are in play.

I have used hooks for managing states, one can mention the type of state they are defining which makes its type unchangeable resulting in lesser discrepancy issues.

  const [task,setTask] = useState<string>("");  const [tasks,setTasks] = useState<Array<string>>([])

The type of props should be defined before using them in the children component which can be done using type or interface keyword.

type props = {    setTask:React.Dispatch<React.SetStateAction<string>>    tasks:string[]     setTasks:React.Dispatch<React.SetStateAction<string[]>>    task:string}

For testing purpose I've used react testing library to do simple unit and integration testing.

const mockSetTask = jest.fn()const mockSetTasks = jest.fn()var task:stringvar tasks:string[] = []it('gets input from input component',  ()=>{        render(<Input  setTask={mockSetTask} setTasks={mockSetTasks} tasks={tasks} task={task}/>)        const ele = screen.getByPlaceholderText("Enter Task") as HTMLInputElement        fireEvent.change(ele,{target:{value:'Go To Gym'}})        expect(ele.value).toBe('Go To Gym')    })

Github Repo : To do list app

Original Link: https://dev.to/yashasaveekesarwani99/to-do-list-app-with-react-typescript-and-react-testing-library-4a22

Share this article:

View Full Article

Dev To

An online community for sharing and discovering great ideas, having debates, and making friends

More About this Source Visit Dev To