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Introduce Jest #1347

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merged 4 commits into from
Jul 3, 2017
Merged

Introduce Jest #1347

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ac5e67e
dev-deps: jest, jscodeshift, jest-codemods
langpavel Jul 2, 2017
2edcd8f
jest configuration
langpavel Jul 2, 2017
5d91f68
Example jest test
langpavel Jul 2, 2017
fc01c48
Remove mocha and istanbul in favour of jest
langpavel Jul 2, 2017
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87 changes: 87 additions & 0 deletions jest.config.js
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@@ -0,0 +1,87 @@
module.exports = {
// Modules can be explicitly auto-mocked using jest.mock(moduleName).
// https://facebook.github.io/jest/docs/en/configuration.html#automock-boolean
automock: false, // [boolean]

// Respect Browserify's "browser" field in package.json when resolving modules.
// https://facebook.github.io/jest/docs/en/configuration.html#browser-boolean
browser: false, // [boolean]

// This config option can be used here to have Jest stop running tests after the first failure.
// https://facebook.github.io/jest/docs/en/configuration.html#bail-boolean
bail: false, // [boolean]

// The directory where Jest should store its cached dependency information.
// https://facebook.github.io/jest/docs/en/configuration.html#cachedirectory-string
// cacheDirectory: '/tmp/<path>', // [string]

// Indicates whether the coverage information should be collected while executing the test.
// Because this retrofits all executed files with coverage collection statements,
// it may significantly slow down your tests.
// https://facebook.github.io/jest/docs/en/configuration.html#collectcoverage-boolean
// collectCoverage: false, // [boolean]

// https://facebook.github.io/jest/docs/en/configuration.html#collectcoveragefrom-array
collectCoverageFrom: ['src/**/*.{js,jsx}', '!**/node_modules/**', '!**/vendor/**'],

// https://facebook.github.io/jest/docs/en/configuration.html#coveragedirectory-string
coverageDirectory: '<rootDir>/coverage', // [string]

// coveragePathIgnorePatterns: // [array<string>]
// coverageReporters: [], // [array<string>]
// coverageThreshold: {}, // [object]

globals: {
__DEV__: true,
},

// https://facebook.github.io/jest/docs/en/configuration.html#mapcoverage-boolean
// mapCoverage: false, // [boolean]

// The default extensions Jest will look for.
// https://facebook.github.io/jest/docs/en/configuration.html#modulefileextensions-array-string
moduleFileExtensions: ['js', 'json', 'jsx', 'node'],

// moduleDirectories: // [array<string>]

// A map from regular expressions to module names that allow to stub out resources,
// like images or styles with a single module.
moduleNameMapper: {
'\\.(css|less|scss|sss)$': 'identity-obj-proxy',
'\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$': 'GlobalImageStub',
},

// modulePathIgnorePatterns: // [array<string>]
// modulePaths: // [array<string>]
// notify: false, // [boolean]
// preset: // [string]
// projects: // [array<string>]
// clearMocks: // [boolean]
// reporters: // [array<moduleName | [moduleName, options]>]
// resetMocks: // [boolean]
// resetModules: // [boolean]
// resolver: // [string]
// rootDir: // [string]
// roots: // [array<string>]
// setupFiles: // [array]
// setupTestFrameworkScriptFile: // [string]
// snapshotSerializers: // [array<string>]
// testEnvironment: // [string]
// testMatch: // [array<string>]
// testPathIgnorePatterns: // [array<string>]
// testRegex: // [string]
// testResultsProcessor: // [string]
// testRunner: // [string]
// testURL: // [string]
// timers: // [string]

transform: {
'\\.jsx?$': 'babel-jest',
'\\.(jpe?g|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$': '<rootDir>/jest/fileTransformer.js',
},

// transformIgnorePatterns: // [array<string>]
// unmockedModulePathPatterns: // [array<string>]

verbose: true, // [boolean]
};
7 changes: 7 additions & 0 deletions jest/fileTransformer.js
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const path = require('path');

module.exports = {
process(src, filename) {
return `module.exports = ${JSON.stringify(path.basename(filename))};`;
},
};
20 changes: 10 additions & 10 deletions package.json
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Expand Up @@ -48,8 +48,8 @@
"babel-cli": "^6.24.1",
"babel-core": "^6.25.0",
"babel-eslint": "^7.2.3",
"babel-jest": "^20.0.3",
"babel-loader": "^7.1.1",
"babel-plugin-istanbul": "^4.1.4",
"babel-plugin-rewire": "^1.1.0",
"babel-preset-env": "^1.5.2",
"babel-preset-react": "^6.24.1",
Expand All @@ -59,7 +59,6 @@
"babel-template": "^6.25.0",
"babel-types": "^6.25.0",
"browser-sync": "^2.18.12",
"chai": "^4.0.2",
"chokidar": "^1.7.0",
"cross-env": "^5.0.1",
"css-loader": "^0.28.4",
Expand All @@ -77,12 +76,14 @@
"front-matter": "^2.1.2",
"glob": "^7.1.2",
"husky": "^0.14.1",
"identity-obj-proxy": "^3.0.0",
"jest": "^20.0.4",
"jest-codemods": "^0.10.1",
"jscodeshift": "^0.3.32",
"lint-staged": "^4.0.0",
"markdown-it": "^8.3.1",
"mkdirp": "^0.5.1",
"mocha": "^3.4.2",
"null-loader": "^0.1.1",
"nyc": "^11.0.3",
"opn-cli": "^3.1.0",
"pixrem": "^3.0.2",
"pleeease-filters": "^4.0.0",
Expand All @@ -105,7 +106,7 @@
"react-deep-force-update": "^2.0.1",
"react-error-overlay": "^1.0.9",
"react-hot-loader": "^3.0.0-beta.7",
"react-test-renderer": "^15.5.4",
"react-test-renderer": "^15.6.1",
"rimraf": "^2.6.1",
"sinon": "^2.3.5",
"stylelint": "^7.12.0",
Expand Down Expand Up @@ -135,7 +136,6 @@
"env": {
"test": {
"plugins": [
"istanbul",
"rewire"
]
}
Expand Down Expand Up @@ -166,10 +166,10 @@
"fix-js": "yarn run lint-js -- --fix",
"fix-css": "yarn run lint-css -- --fix",
"fix": "yarn run fix-js && yarn run fix-css",
"test": "mocha",
"test-watch": "yarn run test -- --reporter min --watch",
"test-cover": "cross-env NODE_ENV=test nyc npm run test",
"coverage": "yarn run test-cover && nyc report --reporter=html && opn coverage/index.html",
"test": "jest",
"test-watch": "yarn run test -- --watch --notify",
"test-cover": "yarn run test -- --coverage",
"coverage": "yarn run test-cover && opn coverage/lcov-report/index.html",
"clean": "babel-node tools/run clean",
"copy": "babel-node tools/run copy",
"bundle": "babel-node tools/run bundle",
Expand Down
12 changes: 6 additions & 6 deletions src/components/Layout/Layout.test.js
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Expand Up @@ -7,26 +7,26 @@
* LICENSE.txt file in the root directory of this source tree.
*/

/* eslint-env mocha */
/* eslint-env jest */
/* eslint-disable padded-blocks, no-unused-expressions */

import React from 'react';
import { expect } from 'chai';
import { render } from 'enzyme';
import renderer from 'react-test-renderer';
import App from '../App';
import Layout from './Layout';

describe('Layout', () => {

it('renders children correctly', () => {
const wrapper = render(
const wrapper = renderer.create(
<App context={{ insertCss: () => {} }}>
<Layout>
<div className="child" />
</Layout>
</App>,
);
expect(wrapper.find('div.child').length).to.eq(1);
).toJSON();

expect(wrapper).toMatchSnapshot();
});

});
178 changes: 178 additions & 0 deletions src/components/Layout/__snapshots__/Layout.test.js.snap
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// Jest Snapshot v1, https://goo.gl/fbAQLP

exports[`Layout renders children correctly 1`] = `
<div>
<div
className="root"
>
<div
className="container"
>
<div
className="root"
role="navigation"
>
<a
className="link"
href="/about"
onClick={[Function]}
>
About
</a>
<a
className="link"
href="/contact"
onClick={[Function]}
>
Contact
</a>
<span
className="spacer"
>
|
</span>
<a
className="link"
href="/login"
onClick={[Function]}
>
Log in
</a>
<span
className="spacer"
>
or
</span>
<a
className="link highlight"
href="/register"
onClick={[Function]}
>
Sign up
</a>
</div>
<a
className="brand"
href="/"
onClick={[Function]}
>
<img
alt="React"
height="38"
src="logo-small.png"
srcSet="[email protected] 2x"
width="38"
/>
<span
className="brandTxt"
>
Your Company
</span>
</a>
<div
className="banner"
>
<h1
className="bannerTitle"
>
React
</h1>
<p
className="bannerDesc"
>
Complex web apps made easy
</p>
</div>
</div>
</div>
<div
className="child"
/>
<div
className="root"
>
<div
className="container"
>
<a
className="link"
href="https://gitter.im/kriasoft/react-starter-kit"
>
Ask a question
</a>
<span
className="spacer"
>
|
</span>
<a
className="link"
href="https://github.com/kriasoft/react-starter-kit/issues/new"
>
Report an issue
</a>
</div>
</div>
<div
className="root"
>
<div
className="container"
>
<span
className="text"
>
© Your Company
</span>
<span
className="spacer"
>
·
</span>
<a
className="link"
href="/"
onClick={[Function]}
>
Home
</a>
<span
className="spacer"
>
·
</span>
<a
className="link"
href="/admin"
onClick={[Function]}
>
Admin
</a>
<span
className="spacer"
>
·
</span>
<a
className="link"
href="/privacy"
onClick={[Function]}
>
Privacy
</a>
<span
className="spacer"
>
·
</span>
<a
className="link"
href="/not-found"
onClick={[Function]}
>
Not Found
</a>
</div>
</div>
</div>
`;
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