tailwindcss/tests/custom-extractors.test.js

import fs from 'fs'
import path from 'path'

import { run } from './util/run'

function customExtractor(content) {
  let matches = content.match(/class="([^"]+)"/)
  return matches ? matches[1].split(/\s+/) : []
}

let expectedPath = path.resolve(__dirname, './custom-extractors.test.css')
let expected = fs.readFileSync(expectedPath, 'utf8')

test('defaultExtractor', () => {
  let config = {
    content: {
      content: [path.resolve(__dirname, './custom-extractors.test.html')],
      options: {
        defaultExtractor: customExtractor,
      },
    },
  }

  return run('@tailwind utilities', config).then((result) => {
    expect(result.css).toMatchFormattedCss(expected)
  })
})

test('extractors array', () => {
  let config = {
    content: {
      content: [path.resolve(__dirname, './custom-extractors.test.html')],
      options: {
        extractors: [
          {
            extractor: customExtractor,
            extensions: ['html'],
          },
        ],
      },
    },
  }

  return run('@tailwind utilities', config).then((result) => {
    expect(result.css).toMatchFormattedCss(expected)
  })
})

test('extract function', () => {
  let config = {
    content: {
      content: [path.resolve(__dirname, './custom-extractors.test.html')],
      extract: customExtractor,
    },
  }

  return run('@tailwind utilities', config).then((result) => {
    expect(result.css).toMatchFormattedCss(expected)
  })
})

test('extract.DEFAULT', () => {
  let config = {
    content: {
      content: [path.resolve(__dirname, './custom-extractors.test.html')],
      extract: {
        DEFAULT: customExtractor,
      },
    },
  }

  return run('@tailwind utilities', config).then((result) => {
    expect(result.css).toMatchFormattedCss(expected)
  })
})

test('extract.{extension}', () => {
  let config = {
    content: {
      content: [path.resolve(__dirname, './custom-extractors.test.html')],
      extract: {
        html: customExtractor,
      },
    },
  }

  return run('@tailwind utilities', config).then((result) => {
    expect(result.css).toMatchFormattedCss(expected)
  })
})