text: const postcss = require('postcss')
  
  const plugin = require('./')
  
  async function run (input, output) {
    let result = await postcss([plugin()]).process(input, { from: undefined })
    expect(result.css).toEqual(output)
    expect(result.warnings()).toHaveLength(0)
  }
  
  it('removes vendor prefixes', async () => {
    await run(inputData.important, outputData.important)
  })
  
  const inputData = {
    important: `
      body {
        color: #000 !important;
        font-size: 16px;
      }
    `
  }
  
  const outputData = {
    important: `
      body {
        color: #000;
        font-size: 16px;
      }
    `
  }
  