Merge tailwindcss-plugin-jest/master

tailwindcss-plugin-jest/.gitignore

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+/node_modules/
+/yarn.lock

tailwindcss-plugin-jest/.travis.yml

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+language: node_js
+
+node_js:
+  - '8'
+
+cache:
+  directories:
+    - node_modules
+
+before_install:
+  - npm update
+
+install:
+  - npm install
+
+script:
+  - npm test

tailwindcss-plugin-jest/LICENSE

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+MIT License
+
+Copyright (c) 2019 Oliver Davies
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

tailwindcss-plugin-jest/README.md

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+# Testing Tailwind CSS Plugins with Jest
+
+An example of how to use [Jest][jest], a JavaScript testing framework, for testing [Tailwind CSS][tailwind] plugins.
+
+## License
+
+MIT
+
+## Author
+
+[Oliver Davies][website] - Full Stack Developer
+
+[jest]: https://jestjs.io
+[tailwind]: https://tailwindcss.com
+[website]: https://www.oliverdavies.uk

tailwindcss-plugin-jest/index.js

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+module.exports = (variants) => ({ addUtilities }) => {
+  addUtilities({
+    '.test': {
+      display: 'block'
+    }
+  }, variants)
+}

tailwindcss-plugin-jest/package.json

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+{
+  "name": "tailwindcss-plugin-jest-example",
+  "version": "0.1.0",
+  "description": "An example showing how to write tests for for Tailwind CSS plugins.",
+  "main": "index.js",
+  "scripts": {
+    "test": "jest"
+  },
+  "keywords": [
+    "tailwindcss",
+    "jest"
+  ],
+  "author": {
+    "name": "Oliver Davies",
+    "url": "https://www.oliverdavies.uk"
+  },
+  "license": "MIT",
+  "devDependencies": {
+    "jest": "^24.7.1",
+    "jest-matcher-css": "^1.0.3"
+  },
+  "dependencies": {
+    "postcss": "^7.0.14",
+    "tailwindcss": "^1.0.1"
+  }
+}

tailwindcss-plugin-jest/test.js

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+const cssMatcher = require('jest-matcher-css')
+const defaultConfig = require('tailwindcss/defaultConfig')
+const plugin = require('./index')
+const postcss = require('postcss')
+const tailwindcss = require('tailwindcss')
+
+function run(options = {}) {
+  return postcss(
+    tailwindcss({
+      corePlugins: false,
+      plugins: [plugin(options)]
+    })
+  )
+  .process('@tailwind utilities;', {
+    from: undefined
+  })
+}
+
+expect.extend({
+  toMatchCss: cssMatcher
+})
+
+test('it generates the correct classes with no variants', () => {
+  const output = `
+    .test {
+      display: block
+    }
+  `
+
+  run().then(result => {
+    expect(result.css).toMatchCss(output)
+  })
+})
+
+test('it generates the correct classes with variants', () => {
+  const output = `
+    .test {
+      display: block
+    }
+
+    .hover\\:test:hover {
+      display: block
+    }
+
+    .focus\\:test:focus {
+      display: block
+    }
+  `
+
+  run({ variants: ['hover', 'focus'] }).then(result => {
+    expect(result.css).toMatchCss(output)
+  })
+})