DevTools: Create end-to-end test for chrome://inspect

chrome/test/data/webui/inspect_ui_test.js

+// Copyright 2014 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.
+
+function waitForElements(selector, callback, timeout) {
+  var deadline = Date.now() + 3000;
+  function check() {
+    var elements = document.querySelectorAll(selector);
+    if (elements.length) {
+      callback(elements);
+    } else if (Date.now() < deadline) {
+      setTimeout(check, 100);

[pfeldman, 2014/03/26 09:18:45]

timeout in tests is a 100% guarantee of flake. you should sniff the populate
method instead and timeout upon failure.

+    } else {
+      expectNotReached('DOM element(s) missing: ' + selector);
+      testDone();
+    }
+  }
+  check();
+}
+
+function findByContentSubstring(elements, content, childSelector) {
+  return Array.prototype.filter.call(elements, function(element) {
+    if (childSelector)
+      element = element.querySelector(childSelector);
+    return element && element.textContent.indexOf(content) >= 0;
+  })[0];
+}
+
+function testTargetListed(sectionSelector, url) {
+  waitForElements(sectionSelector + ' .row', function(elements) {
+    var urlElement = findByContentSubstring(elements, url, '.url');
+    expectNotEquals(undefined, urlElement);
+    testDone();
+  });
+}
+
+function testAdbTargetsListed() {
+  waitForElements('.device', function(devices) {
+    expectEquals(2, devices.length);
+
+    var offlineDevice = findByContentSubstring(
+        devices, 'Offline', '.device-name');
+    expectNotEquals(undefined, offlineDevice);
+
+    var onlineDevice = findByContentSubstring(
+        devices, 'Nexus 6', '.device-name');
+    expectNotEquals(undefined, onlineDevice);
+
+    var browsers = onlineDevice.querySelectorAll('.browser');
+    expectEquals(4, browsers.length);
+
+    var chromeBrowser = findByContentSubstring(
+       browsers, 'Chrome (32.0.1679.0)', '.browser-name');
+    expectNotEquals(undefined, chromeBrowser);
+
+    var chromePages = chromeBrowser.querySelectorAll('.pages');
+    var chromiumPage = findByContentSubstring(
+       chromePages, 'http://www.chromium.org/', '.url');
+    expectNotEquals(undefined, chromiumPage);
+
+    var webView = findByContentSubstring(
+       browsers, 'WebView in com.sample.feed (4.0)', '.browser-name');
+    expectNotEquals(undefined, webView);
+
+    testDone();
+  });
+}