eslint-plugin-lit-a11y/tests/lib/rules/aria-activedescendant-has-tabindex.js

linting plugin for lit-a11y

/**
 * @fileoverview Enforce elements with aria-activedescendant are tabbable.
 * @author open-wc
 */

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

import { RuleTester } from 'eslint';
import rule from '../../../lib/rules/aria-activedescendant-has-tabindex.js';

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

const ruleTester = new RuleTester({
  settings: { litHtmlSources: false },
  languageOptions: {
    parserOptions: {
      sourceType: 'module',
      ecmaVersion: 2015,
    },
  },
});

ruleTester.run('aria-activedescendant-has-tabindex', rule, {
  valid: [
    {
      code: 'html`<div aria-activedescendant="foo" tabindex="0"></div>`;',
    },
    {
      code: 'html`<div aria-activedescendant=${someID} tabindex=${0}></div>`;',
    },
    {
      code: 'html`<div aria-activedescendant=${someID} tabindex="0"></div>`;',
    },
    {
      code: 'html`<div aria-activedescendant=${someID} tabindex=${1}></div>`;',
    },
    {
      code: 'html`<input aria-activedescendant=${someID} />`;',
    },
    {
      code: 'html`<input aria-activedescendant=${someID} tabindex=${1} />`;',
    },
    {
      code: 'html`<input aria-activedescendant=${someID} tabindex=${0} />`;',
    },
    {
      code: 'html`<input aria-activedescendant=${someID} tabindex=${-1} />`;',
    },
    {
      code: 'html`<div aria-activedescendant=${someID} tabindex=${-1}></div>`;',
    },
    {
      code: 'html`<div aria-activedescendant=${someID} tabindex="-1"></div>`;',
    },
  ],

  invalid: [
    {
      code: 'html`<div aria-activedescendant=${someID}></div>`;',
      errors: [
        {
          message: 'Elements with aria-activedescendant must be tabbable.',
        },
      ],
    },
  ],
});