eslint-plugin-lit-a11y/tests/lib/rules/role-has-required-aria-attrs.js

linting plugin for lit-a11y

/**
 * @fileoverview Enforce that elements with ARIA roles must have all required attributes for that role.
 * @author open-wc
 */

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

import { RuleTester } from 'eslint';
import rule from '../../../lib/rules/role-has-required-aria-attrs.js';

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

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

ruleTester.run('role-has-required-aria-attrs', rule, {
  valid: [
    { code: "html`<span role='alert' aria-atomic='foo' aria-live='foo'></span>`" },
    {
      code: 'html`<span role="checkbox" aria-checked="false" aria-labelledby="foo" tabindex="0"></span>`',
    },
    { code: 'html`<span role="row"></span>`' },
    { code: 'html`<input type="checkbox" aria-checked="true" role="switch">`' },
    { code: 'html`<div role="combobox" aria-controls="foo" aria-expanded="foo"></div>`' },
    {
      code: 'html`<div role="combobox" aria-activedescendant="child" aria-autocomplete="none" aria-controls="listbox" aria-expanded="false"></div>`;',
    },
    {
      code: 'html`<div role="combobox" aria-activedescendant=${"child"} aria-autocomplete=${"none"} aria-controls="listbox" aria-expanded=${"false"}></div>`;',
    },
  ],

  invalid: [
    {
      code: "html`<span role='checkbox'></span>`",
      errors: [{ message: 'The "checkbox" role requires the attribute "aria-checked".' }],
    },
    {
      code: "html`<div role='combobox'></div>`",
      errors: [
        {
          message:
            'The "combobox" role requires the attributes "aria-controls" and "aria-expanded".',
        },
      ],
    },
    {
      code: 'html`<div role="slider" ></div>`',
      errors: [{ message: 'The "slider" role requires the attribute "aria-valuenow".' }],
    },
  ],
});