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Cómo probar estos eventos con Jest

Dígame cómo probar estos eventos y ComponentDidMount. Necesito probar la llamada a componentdidmount y cada evento en el cuerpo de la función...

 componentDidMount() { window.addEventListener('message', this.handleMessage); window.addEventListener('beforeunload', this.handleBeforeUnload); window.addEventListener('blur', this.handleAppFocusOut); window.addEventListener('focus', this.handleAppFocusIn); }

Las funciones que se llaman en evento se describen aquí.

Aquí se describen algunas funciones:

 handleMessage = e => { if (e.data && e.data.adminToClient) { this.props.processAdminMessage(e.data.adminToClient); } }; handleBeforeUnload = () => { sessionStorage.setItem('lastVisit', new Date().getTime().toString()); }; handleAppFocusOut = () => { const { activeElement } = document; if (activeElement?.nodeName !== 'BODY') { this.setState({ lastFocusedField: activeElement }); } }; handleAppFocusIn = () => { if (this.state.lastFocusedField) { try { const focusField = this.state.lastFocusedField; setTimeout(() => { if (document.activeElement?.nodeName === 'BODY') { focusField.focus(); } }); } catch (err) { // Ignore any errors } } this.setState({ lastFocusedField: null }); };
about 4 years ago · Juan Pablo Isaza
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