src/third_party/devtools/test/webtests/http/tests/devtools/a11y-axe-core/sources/sources-editor-pane-a11y-test.js

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

(async function () {
  TestRunner.addResult('Tests accessibility in the editor pane in sources panel using the axe-core linter.');

  // axe-core issue #1444 -- role="tree" requires children with role="treeitem",
  // but it is reasonable to have trees with no leaves.
  // Ignore 'aria-required-children' rule for tablist because it doesn't accommodate empty tablist.
  const NO_REQUIRED_CHILDREN_RULESET = {
    'aria-required-children': {
      enabled: false,
      selector: ':not(.tabbed-pane-header-tabs)'
    },
  };

  await TestRunner.loadModule('axe_core_test_runner');
  await TestRunner.loadModule('sources_test_runner');

  await UI.viewManager.showView('sources');

  await setup();
  await runTest();

  TestRunner.completeTest();

  async function setup() {
    const projects = Workspace.workspace.projectsForType(Workspace.projectTypes.FileSystem);
    const snippetsProject = projects.find(
      project => Persistence.FileSystemWorkspaceBinding.fileSystemType(project) === 'snippets');
    const uiSourceCode1 = await snippetsProject.createFile('');
    await Common.Revealer.reveal(uiSourceCode1);
    const uiSourceCode2 = await snippetsProject.createFile('');
    await Common.Revealer.reveal(uiSourceCode2);
  }

  async function runTest() {
    // Verify contents of the TabHeader to make sure files are open
    const tabbedPane = UI.panels.sources._sourcesView._editorContainer._tabbedPane;
    const tabs = tabbedPane._tabs;
    TestRunner.addResult('All tabs:');
    tabs.forEach(tab => TestRunner.addResult(tab.title));
    TestRunner.addResult('\n');

    await runA11yTest();
  }

  async function runA11yTest() {
    await UI.viewManager.showView('sources');
    const element = UI.panels.sources._sourcesView.contentElement;
    await AxeCoreTestRunner.runValidation(element, NO_REQUIRED_CHILDREN_RULESET);
  }
})();