Best JavaScript code snippet using jest
index.js
Source:index.js
1import React, { Component } from 'react';2import PropTypes from 'prop-types';3import { connect } from 'react-redux';4import { updateFilters } from '../../../services/filters/actions';5import Checkbox from '../../Checkbox';6import GithubStarButton from '../../github/StarButton';7import './style.scss';8const availableSizes = ['XS', 'S', 'M', 'ML', 'L', 'XL', 'XXL'];9class Filter extends Component {10 static propTypes = {11 updateFilters: PropTypes.func.isRequired,12 filters: PropTypes.array13 };14 componentDidMount() {15 this.selectedCheckboxes = new Set();16 }17 toggleCheckbox = label => {18 if (this.selectedCheckboxes.has(label)) {19 this.selectedCheckboxes.delete(label);20 } else {21 this.selectedCheckboxes.add(label);22 }23 this.props.updateFilters(Array.from(this.selectedCheckboxes));24 };25 createCheckbox = label => (26 <Checkbox27 classes="filters-available-size"28 label={label}29 handleCheckboxChange={this.toggleCheckbox}30 key={label}31 />32 );33 createCheckboxes = () => availableSizes.map(this.createCheckbox);34 render() {35 return (36 <div className="filters">37 <h4 className="title">Sizes:</h4>38 {this.createCheckboxes()}39 <GithubStarButton />40 </div>41 );42 }43}44const mapStateToProps = state => ({45 filters: state.filters.items46});47export default connect(48 mapStateToProps,49 { updateFilters }...
github-button.js
Source:github-button.js
1import React, { PureComponent } from 'react';2class GitHubStarButton extends PureComponent {3 async componentDidMount() {4 const gitHubButtonModule = await import('github-buttons/dist/react');5 this.GitHubButton = gitHubButtonModule.default;6 this.forceUpdate();7 }8 render() {9 const GitHubButton = this.GitHubButton;10 if (!GitHubButton) {11 return null;12 }13 return (14 <GitHubButton15 href="https://github.com/netlify/netlify-cms"16 data-icon="octicon-star"17 data-show-count="true"18 aria-label="Star netlify/netlify-cms on GitHub"19 >20 Star21 </GitHubButton>22 );23 }24}...
LambdaTest’s Jest Testing Tutorial covers step-by-step guides around Jest with code examples to help you be proficient with the Jest framework. The Jest tutorial has chapters to help you learn right from the basics of Jest framework to code-based tutorials around testing react apps with Jest, perform snapshot testing, import ES modules and more.
|<p>it('check_object_of_Car', () => {</p><p>
expect(newCar()).toBeInstanceOf(Car);</p><p>
});</p>|
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