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Issue 1124873002: Mocha adapter for Polymer browser tests. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Mocha adapter and Polymer BrowserTest. Created 5 years, 6 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 /**
6 * @fileoverview Framework for running JavaScript tests of Polymer elements.
7 */
8
9 /**
10 * Test fixture for Polymer element testing.
11 * @constructor
12 * @extends testing.Test
13 */
14 function PolymerTest() {
15 }
16
17 PolymerTest.prototype = {
18 __proto__: testing.Test.prototype,
19
20 /**
21 * Navigate to a WebUI to satisfy BrowserTest conditions. Override to load a
22 * more useful WebUI.
23 * @override
24 */
25 browsePreload: 'chrome://chrome-urls/',
26
27 /**
28 * The mocha adapter assumes all tests are async.
29 * @override
30 * @final
31 */
32 isAsync: true,
33
34 /**
35 * @override
36 * @final
37 */
38 extraLibraries: ['../../../../third_party/mocha/mocha.js',
39 'mocha_adapter.js'],
40
41 setUp: function() {
42 // Import Polymer before running tests.
43 suiteSetup(function(done) {
44 var link = document.createElement('link');
45 link.rel = 'import';
46 link.href = 'chrome://resources/polymer/v0_8/polymer/polymer.html';
47 link.onload = function() {
48 done();
49 };
50 link.onerror = function() {
51 done(new Error('Failed to load Polymer!'));
52 };
53 document.head.appendChild(link);
54 });
55 },
56 };
57
58 /**
59 * A helper method to run a function asynchronously.
60 * @param {Function} fn
61 */
62 PolymerTest.async = function(fn) {
63 setTimeout(function() {
64 fn();
65 });
66 };
67
68 /**
69 * Imports the HTML file, then calls |done| on success or throws an error.
70 * @param {String} href The URL to load.
71 * @param {Function} done The done callback.
72 */
73 PolymerTest.importHref = function(href, done) {
74 Polymer.Base.importHref(
75 href,
76 function() { done(); },
77 function() { throw new Error('Failed to load ' + href); });
78 };
79
80 /**
81 * Removes all content from the <body>.
82 */
83 PolymerTest.clear = function() {
84 document.body.innerHTML = '';
85 };
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