Testing Pushkin with Jest

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​Jest is a JavaScript library for creating, running, and structuring tests.
Install Jest using yarn:
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$ yarn add --dev jest
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To use Babel, install required dependencies via yarn:
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$ yarn add --dev babel-jest @babel/core @babel/preset-env
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Configure Babel to target your current version of Node by creating a babel.config.js file in the root of your project:
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// babel.config.js
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 module.exports = {
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     presets: [
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         [
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             '@babel/preset-env',
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             {
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                 targets: {
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                     node: 'current',
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                 },
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             },
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         ],
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     ],
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 };
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The ideal configuration for Babel will depend on your project. See Babel’s docs for more details.
To learn more about testing, go to Jest official documentation.

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