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How to use testPathArray method in Jest

Best JavaScript code snippet using jest

normalize.test.js

Source:normalize.test.js

...162    expected[expectedPathFooBar] = true;163    expect(options.collectCoverageOnlyFrom).toEqual(expected);164  });165});166function testPathArray(key) {167  it('normalizes all paths relative to rootDir', () => {168    const {options} = normalize(169      {170        [key]: ['bar/baz', 'qux/quux/'],171        rootDir: '/root/path/foo',172      },173      {},174    );175    expect(options[key]).toEqual([expectedPathFooBar, expectedPathFooQux]);176  });177  it('does not change absolute paths', () => {178    const {options} = normalize(179      {180        [key]: ['/an/abs/path', '/another/abs/path'],181        rootDir: '/root/path/foo',182      },183      {},184    );185    expect(options[key]).toEqual([expectedPathAbs, expectedPathAbsAnother]);186  });187  it('substitutes <rootDir> tokens', () => {188    const {options} = normalize(189      {190        [key]: ['<rootDir>/bar/baz'],191        rootDir: '/root/path/foo',192      },193      {},194    );195    expect(options[key]).toEqual([expectedPathFooBar]);196  });197}198describe('roots', () => {199  testPathArray('roots');200});201describe('transform', () => {202  let Resolver;203  beforeEach(() => {204    Resolver = require('jest-resolve');205    Resolver.findNodeModule = jest.fn(name => name);206  });207  it('normalizes the path', () => {208    const {options} = normalize(209      {210        rootDir: '/root/',211        transform: {212          [DEFAULT_CSS_PATTERN]: '<rootDir>/node_modules/jest-regex-util',213          [DEFAULT_JS_PATTERN]: 'babel-jest',...

normalize-test.js

Source:normalize-test.js

...137    expected[expectedPathFooBar] = true;138    expect(config.collectCoverageOnlyFrom).toEqual(expected);139  });140});141function testPathArray(key) {142  it('normalizes all paths relative to rootDir', () => {143    const {config} = normalize(144      {145        [key]: ['bar/baz', 'qux/quux/'],146        rootDir: '/root/path/foo',147      },148      '/root/path',149    );150    expect(config[key]).toEqual([expectedPathFooBar, expectedPathFooQux]);151  });152  it('does not change absolute paths', () => {153    const {config} = normalize({154      [key]: ['/an/abs/path', '/another/abs/path'],155      rootDir: '/root/path/foo',156    });157    expect(config[key]).toEqual([expectedPathAbs, expectedPathAbsAnother]);158  });159  it('substitutes <rootDir> tokens', () => {160    const {config} = normalize({161      [key]: ['<rootDir>/bar/baz'],162      rootDir: '/root/path/foo',163    });164    expect(config[key]).toEqual([expectedPathFooBar]);165  });166}167describe('roots', () => {168  testPathArray('roots');169});170describe('transform', () => {171  let Resolver;172  beforeEach(() => {173    Resolver = require('jest-resolve');174    Resolver.findNodeModule = jest.fn(name => name);175  });176  it('normalizes the path', () => {177    const {config} = normalize(178      {179        rootDir: '/root/',180        transform: {181          [DEFAULT_CSS_PATTERN]: '<rootDir>/node_modules/jest-regex-util',182          [DEFAULT_JS_PATTERN]: 'babel-jest',...

main.js

Source:main.js

1'use strict';2var ImgurViewer = require('./viewers/imgur/imgur.js');3var OkCupidViewer = require('./viewers/okcupid/okcupid.js');4var HackerNewsViewer = require('./viewers/hackernews/hackernews.js');5var ShortenerViewer = require('./viewers/shortener/shortener.js');6var YoutubeViewer = require('./viewers/youtube/youtube.js');7var hostNames = {8  'www.okcupid.com': {9    '/profile': OkCupidViewer10  },11  'imgur.com': {12    '/a': ImgurViewer13  },14  'news.ycombinator.com': {15    '/item': HackerNewsViewer16  },17  'www.youtube.com': {18    '/watch':YoutubeViewer19  },20  'bit.ly': {21    '/*': ShortenerViewer22  },23  'tinyurl.com': {24    '/*': ShortenerViewer25  },26  'goo.gl': {27    '/*': ShortenerViewer28  }29};30function resolveViewer(a) {31  var paths = hostNames[a.hostname];32  if (paths) {33    var urlPathArray = a.pathname.split('/');34    for (var path in paths) {35      // Exact match?36      if (a.pathname.indexOf(path) === 0) {37        return paths[path];38      }39      else40      {41        // not an exact match, lets try to match parts42        var testPathArray = path.split('/');43        // If we require more pieces than the url has44        if (testPathArray.length > urlPathArray.length) {45          continue;46        }47        var matches = true;48        for (var i = 0; i < testPathArray.length; i++) {49          // Asterisk matches all paths50          if (testPathArray[i] == '*') {51            continue;52          }53          if (testPathArray[i] != urlPathArray[i]) {54            matches = false;55            break;56          }57        }58        if (matches) {59          return paths[path];60        }61      }62    }63  }64  return false;65}66function displayViewer(viewer, a) {67  // Display loading68  document.getElementById('loading').classList.remove('hidden');69  viewer.show(a);70}71function receiveMessage(event) {72  var url = event.data.url;73  var a = document.createElement('A');74  a.href = url;75  var viewer = resolveViewer(a);76  event.source.postMessage({77    hasViewer: !!viewer78  }, event.origin);79  if (viewer) {80    displayViewer(viewer, a);81  }82}...

NavHotels.js

Source:NavHotels.js

1import React, { Component } from 'react';2import './NavHotels.css';3import '../AuthNavigationItem.css';4import { NavLink, withRouter } from 'react-router-dom';5import hotelIcon from '../../../../../img/navImg/hotels.svg';6class NavHotels extends Component{7   constructor() {8      super();9      this.state = {10      };11   }12   render() {13      //Style border of hotelIcon according to the path of the url14      const styleBorder = (pathName) => {15         const pathArray = pathName.split("/");16         // console.log(pathArray);17         // const testPathArray = pathArray.filter((value, index) => index>0 && index<7);18         let myClasses = 'AuthNavLink';19         // const testPath = testPathArray.join("");20         if(21            (pathArray[1] === 'hotels' || 'hotel')22            && (pathArray[1] !== 'home')23            && (pathArray[1] !== 'profile')24            && (pathArray[1] !== 'search')25            && (pathArray[1] !== 'help')26            && (pathArray[1] !== 'settings-and-privacy')27            && (pathArray[1] !== 'advanced')28            && (pathArray[1] !== 'about-us')29         ){30            myClasses = 'AuthNavLink MyActiveLink';31         }32         return myClasses;33      };34      const myClasses = styleBorder(window.location.pathname);35      return (36         <li className="AuthNavigationItem HotelsNav">37            <NavLink className={ myClasses }  activeClassName = "ActiveLink" to={this.props.link}>38               <img className="AuthNavIcon" src={hotelIcon} alt="Hotel Icon of CrowApp"/>39            </NavLink>40         </li>41      )42   }43}...

jest.snapshot.resolver.js

Source:jest.snapshot.resolver.js

1module.exports = {2  resolveSnapshotPath: (testPath, snapshotExtension) => {3    const platform = process.env.TEST_PLATFORM || 'ios';4    const testPathArray = testPath.split('/');5    testPathArray.splice(6      testPathArray.length - 1,7      0,8      '__snapshots__',9      platform,10    );11    return testPathArray.join('/') + snapshotExtension;12  },13  resolveTestPath: (snapshotFilePath, snapshotExtension) => {14    return snapshotFilePath15      .replace('__snapshots__/ios/', '')16      .replace('__snapshots__/android/', '')17      .replace('__snapshots__/', '')18      .slice(0, -snapshotExtension.length);19  },20  testPathForConsistencyCheck: '__tests__/example.test.js',...

Jest Testing Tutorial

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Chapters

What is Jest Framework
Advantages of Jest - Jest has 3,898,000 GitHub repositories, as mentioned on its official website. Learn what makes Jest special and why Jest has gained popularity among the testing and developer community.
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Unit Testing with Jest - Step-by-step tutorial to help you execute unit testing with Jest framework.
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Jest Parameterized Tests - Avoid code duplication and fasten automation testing with Jest using parameterized tests. Parameterization allows you to trigger the same test scenario over different test configurations by incorporating parameters.
Jest Matchers - Enforce assertions better with the help of matchers. Matchers help you compare the actual output with the expected one. Here is an example to see if the object is acquired from the correct class or not. -

|it('check_object_of_Car', () => { expect(newCar()).toBeInstanceOf(Car); });| | :- |

Jest Hooks: Setup and Teardown - Learn how to set up conditions which needs to be followed by the test execution and incorporate a tear down function to free resources after the execution is complete.
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Jest FAQs(Frequently Asked Questions) - Explore the most commonly asked questions around Jest framework, with their answers.