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Adds jest configuration npm run test shows failed results (#60)
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examples/with-jest/__tests__/index.test.js
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examples/with-jest/__tests__/index.test.js
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import React from 'react';
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import {shallow} from 'enzyme';
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import App from '../pages/index.js';
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it('App shows "Hello world!"', () => {
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const app = shallow(
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<App/>
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);
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expect(app.find('p').text()).toEqual('Hello world!');
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});
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examples/with-jest/package.json
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examples/with-jest/package.json
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{
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"name": "my-app",
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"dependencies": {
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"next": "^1.0.0"
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},
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"scripts": {
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"test": "jest",
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"dev": "next",
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"build": "next build",
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"start": "next start"
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},
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"devDependencies": {
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"babel-jest": "^16.0.0",
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"enzyme": "^2.5.1",
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"jest": "^16.0.2"
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}
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}
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examples/with-jest/pages/index.js
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examples/with-jest/pages/index.js
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import React from 'react'
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export default () => (
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<div>
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<p>Hello world!</p>
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</div>
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)
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examples/with-jest/readme.md
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examples/with-jest/readme.md
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## Add testing to your `next` app using `jest`
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[`jest`](https://facebook.github.io/jest/) is a testing framework for `react`. In this example we show how to use `jest` to do DOM-testing for react applications in `next`
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npm install --save-dev jest babel-jest enzyme
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* `jest` - The testing framework
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* `babel-jest` - Babel preprocessor for test files
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* `enzyme` - Mock render the elements
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Add test script to the [recommended `package.json`](https://github.com/zeit/next.js#production-deployment)
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__package.json__
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```javascript
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...
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"scripts": {
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"test": "jest",
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...
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}
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...
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```
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`npm run test`
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