DevTools: Add axe test for the Global listeners pane

This adds an axe tests for the Sources panel global listeners pane.


Bug: 963183
Change-Id: Iba5ef2bdc927439604f01d91c1e8b9966c43fdf8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1666329
Commit-Queue: Jack Lynch <jalyn@microsoft.com>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704732}

third_party/blink/renderer/devtools/front_end/elements_test_runner/ElementsTestRunner.js

@@ -148,6 +148,15 @@ ElementsTestRunner.expandAndDumpEventListeners = function(eventListenersView, ca
   }
 };
 
+/**
+ * @param {!EventListeners.EventListenersView} eventListenersView
+ * @param {boolean=} force
+ * @return {!Promise}
+ */
+ElementsTestRunner.expandAndDumpEventListenersPromise = function(eventListenersView, force) {
+  return new Promise(resolve => ElementsTestRunner.expandAndDumpEventListeners(eventListenersView, resolve, force));
+};
+
 ElementsTestRunner.inlineStyleSection = function() {
   return UI.panels.elements._stylesWidget._sectionBlocks[0].sections[0];
 };

third_party/blink/web_tests/http/tests/devtools/a11y-axe-core/sources/global-listeners-sidebar-a11y-test-expected.txt

+Adding global listener.
+Dumping event listeners view:
+
+======== touchstart ========
+== Raw
+[expanded] WindowRemoveToggle Passiveglobal-listeners-sidebar-a11y-test.js:13
+    handler: () => console.log
+    once: false
+    passive: true
+    useCapture: false
+Running the axe-core linter on the global listeners pane.
+aXe violations: []
+
+

third_party/blink/web_tests/http/tests/devtools/a11y-axe-core/sources/global-listeners-sidebar-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() {
+  await TestRunner.loadModule('axe_core_test_runner');
+  await TestRunner.loadModule('elements_test_runner');
+  await TestRunner.loadModule('sources_test_runner');
+  await TestRunner.showPanel('sources');
+  await TestRunner.navigatePromise('../sources/debugger-breakpoints/resources/dom-breakpoints.html');
+
+  TestRunner.addResult('Adding global listener.');
+  await TestRunner.evaluateInPagePromise(`window.addEventListener('touchstart', () => console.log);`);
+  await UI.viewManager.showView('sources.globalListeners');
+  const globalListenersPane = self.runtime.sharedInstance(BrowserDebugger.ObjectEventListenersSidebarPane);
+  const eventListenersView = globalListenersPane._eventListenersView;
+
+  TestRunner.addResult('Dumping event listeners view:');
+  await ElementsTestRunner.expandAndDumpEventListenersPromise(eventListenersView);
+  TestRunner.addResult('Running the axe-core linter on the global listeners pane.');
+  await AxeCoreTestRunner.runValidation(globalListenersPane.contentElement);
+  TestRunner.completeTest();
+})();