no-distracting-elements-test.js

/**
 * @fileoverview Enforce distracting elements are not used.
 * @author Ethan Cohen
 */

// -----------------------------------------------------------------------------
// Requirements
// -----------------------------------------------------------------------------

import { RuleTester } from 'eslint';
import parserOptionsMapper from '../../__util__/parserOptionsMapper';
import parsers from '../../__util__/helpers/parsers';
import rule from '../../../src/rules/no-distracting-elements';

// -----------------------------------------------------------------------------
// Tests
// -----------------------------------------------------------------------------

const ruleTester = new RuleTester();

const expectedError = (element) => ({
  message: `Do not use <${element}> elements as they can create visual accessibility issues and are deprecated.`,
  type: 'JSXOpeningElement',
});

const componentsSettings = {
  'jsx-a11y': {
    components: {
      Blink: 'blink',
    },
  },
};

ruleTester.run('no-marquee', rule, {
  valid: parsers.all([].concat(
    { code: '<div />;' },
    { code: '<Marquee />' },
    { code: '<div marquee />' },
    { code: '<Blink />' },
    { code: '<div blink />' },
  )).map(parserOptionsMapper),
  invalid: parsers.all([].concat(
    { code: '<marquee />', errors: [expectedError('marquee')] },
    { code: '<marquee {...props} />', errors: [expectedError('marquee')] },
    { code: '<marquee lang={undefined} />', errors: [expectedError('marquee')] },
    { code: '<blink />', errors: [expectedError('blink')] },
    { code: '<blink {...props} />', errors: [expectedError('blink')] },
    { code: '<blink foo={undefined} />', errors: [expectedError('blink')] },
    { code: '<Blink />', settings: componentsSettings, errors: [expectedError('blink')] },
  )).map(parserOptionsMapper),
});