Common mistakes with React Testing Library
Common mistakes with React Testing LibraryMay 4th, 2020 — 15 min read Hi there 👋 I created React Testing Library because I wasn't satisfied with the testing landscape at the time. It expanded to DOM Testing Library and now we have Testing Library implementations (wrappers) for every popular JavaScript framework and testing tool that targets the DOM (and even some that don't). As time has gone on,
Fix the "not wrapped in act(...)" warning
Here's the code for that (if you were to do it with class components, don't worry a function version is coming later in the post): class UsernameFormClass extends React.Component { state = {status: 'idle', error: null} handleSubmit = async event => { event.preventDefault() const newUsername = event.target.elements.username.value this.setState({status: 'pending'}) try { await this.props.updateUsern
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