How to test for tooltip title in jest and testing/library

There are multiple mistakes in your test. Passing component type instead of component instance to render // this is wrong, passing component type baseDom = render(cardComponent); // this is right, passing component instance created with JSX baseDom = render(<cardComponent />); Using mouseMove instead of mouseOver event Searching element by title and passing text instead of … Read more

Issue importing createRoot from react-dom/client

The error message received indicates that you should be importing the createRoot method from react-dom/client instead of from react-dom. To fix the issue, modify your import statement for createRoot to look like this : import { createRoot } from ‘react-dom/client’; So the modified code should be : import React from ‘react’; import { createRoot } … Read more

Testing custom hook: Invariant Violation: could not find react-redux context value; please ensure the component is wrapped in a

The react hooks testing library docs go more into depth on this. However, what we essentially are missing is the provider which we can obtain by creating a wrapper. First we declare a component which will be our provider: import { Provider } from ‘react-redux’ const ReduxProvider = ({ children, reduxStore }) => ( <Provider … Read more

Get URL Params (Next.js 13)

There are 3 different variants of params params (/blog/1) single params multiple params searchParams (/blog?postId=123) single search params multiple search params Both params and searchParams (/blog/1?postId=123) There are multiple ways to handle this For params – useParams() ‘use client’ import { useParams } from ‘next/navigation’ export default function ExampleClientComponent() { const params = useParams() // … Read more

React with TypeScript – define defaultProps in stateless function

After 2 hours of looking for solution… it’s working. If you want to define defaultProps, your arrow function should look like: export const CenterBox: React.SFC<CenterBoxProps> = props => { (…) }; Then you can define props like: CenterBox.defaultProps = { someProp: true } Note that React.SFC is alias for React.StatelessComponent. I hope that this question … Read more

Invalidate queries doesn’t work [React-Query]

Also, there is one more reason that was not mentioned before: If you used enabled option in useQuery than such queries are ignored by invalidateQueries. From docs: https://tanstack.com/query/latest/docs/react/guides/disabling-queries The query will ignore query client invalidateQueries and refetchQueries calls that would normally result in the query refetching.