2 Copyright 2014 The Chromium Authors. All rights reserved.
3 Use of this source code is governed by a BSD-style license that can be
4 found in the LICENSE file.
8 function NetworkSimulator(assert, done) {
11 this._pendingPromises = [];
14 NetworkSimulator._testInProgress = false;
16 NetworkSimulator.prototype.schedulePromise = function(promise) {
17 this._pendingPromises.push(promise);
21 NetworkSimulator.prototype.resolvePromises = function() {
23 return new Promise(function(resolve, reject) {
24 var pendingPromises = self._pendingPromises;
25 self._pendingPromises = [];
26 function allResolved(results) {
27 if (self._pendingPromises.length) {
28 resolve(self.resolvePromises());
33 Promise.all(pendingPromises).then(allResolved, allResolved);
37 NetworkSimulator.prototype.runTest = function(testCase) {
38 if (NetworkSimulator._testInProgress) {
39 this._assert(false, "runTest calls cannot be nested");
44 NetworkSimulator._testInProgress = true;
47 return new Promise(function(resolve, reject) {
48 var realNet = window.net;
52 NetworkSimulator._testInProgress = false;
55 // All net.* methods should return promises. This watches all
56 // promises generated by test-overridden methods.
58 ['probe', 'jsonp', 'get', 'post',
59 'ajax', 'json', 'xml'].forEach(function(method) {
61 net[method] = function() {
62 return self.schedulePromise(self[method].apply(self, arguments));
70 // Make sure errors thrown in the test case don't leave window.net in a bad state.
72 self._assert(false, "Test case threw an error:" + e);
75 self.resolvePromises().then(function() {
77 self._assert(window.net == realNet);
79 }).catch(function(e) {
81 self._assert(false, "Failed to finish test: " + e);