old_contents: var postcss = require('postcss');
  
  var plugin = require('./');
  
  function run(input, output) {
      return postcss([ plugin ]).process(input).then(result => {
          expect(result.css).toEqual(output);
          expect(result.warnings().length).toBe(0);
      });
  }
  
  it('does something', () => {
      return run('a { color: twitter-color }', 'a { color: #55acee }');
  });
  
  it('does something', () => {
      return run('a { color: nobody-color }', 'a { color: nobody-color }');
  });
  
  it('does something', () => {
      return run('a { color: paypal-dark-2-color }', 'a { color: #3b7bbf }');
  });
  
  it('does something', () => {
      return run('a { background: linear-gradient(ebay-color, ebay-2-color) }',
                 'a { background: linear-gradient(#e53238, #0064d2) }');
  });
  
new_contents: var postcss = require('postcss');
  
  var plugin = require('./');
  
  function run(input, output) {
      return postcss([ plugin ]).process(input).then(result => {
          expect(result.css).toEqual(output);
          expect(result.warnings().length).toBe(0);
      });
  }
  
  it('replaces brand color', () => {
      return run('a { color: twitter-color }', 'a { color: #55acee }');
  });
  
  it('ignores unknown colors', () => {
      return run('a { color: nobody-color }', 'a { color: nobody-color }');
  });
  
  it('supports extra colors', () => {
      return run('a { color: paypal-dark-2-color }', 'a { color: #3b7bbf }');
  });
  
  it('supports functions', () => {
      return run('a { background: linear-gradient(ebay-color, ebay-2-color) }',
                 'a { background: linear-gradient(#e53238, #0064d2) }');
  });
  
subject: Fix test names