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| 1 <!-- | |
| 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. | |
| 5 --> | |
| 6 | |
| 7 <script> | |
| 8 function NetworkSimulator(assert, done) { | |
| 9 this._assert = assert; | |
| 10 this._done = done; | |
| 11 this._pendingPromises = []; | |
| 12 } | |
| 13 | |
| 14 NetworkSimulator._testInProgress = false; | |
| 15 | |
| 16 NetworkSimulator.prototype.schedulePromise = function(promise) { | |
| 17 this._pendingPromises.push(promise); | |
| 18 return promise; | |
| 19 }; | |
| 20 | |
| 21 NetworkSimulator.prototype.resolvePromises = function() { | |
| 22 var self = this; | |
| 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()); | |
| 29 return; | |
| 30 } | |
| 31 resolve(results); | |
| 32 } | |
| 33 Promise.all(pendingPromises).then(allResolved, allResolved); | |
| 34 }); | |
| 35 }; | |
| 36 | |
| 37 NetworkSimulator.prototype.runTest = function(testCase) { | |
| 38 if (NetworkSimulator._testInProgress) { | |
| 39 this._assert(false, "runTest calls cannot be nested"); | |
| 40 this._done(); | |
| 41 return; | |
| 42 } | |
| 43 | |
| 44 NetworkSimulator._testInProgress = true; | |
| 45 | |
| 46 var self = this; | |
| 47 var realNet = window.net; | |
| 48 | |
| 49 function reset() { | |
| 50 window.net = realNet; | |
| 51 NetworkSimulator._testInProgress = false; | |
| 52 } | |
| 53 | |
| 54 return Promise.resolve().then(function() { | |
| 55 // All net.* methods should return promises. This watches all | |
| 56 // promises generated by test-overridden methods. | |
| 57 window.net = {}; | |
| 58 ['probe', 'jsonp', 'get', 'post', | |
| 59 'ajax', 'json', 'xml'].forEach(function(method) { | |
| 60 if (method in self) { | |
| 61 net[method] = function() { | |
| 62 return self.schedulePromise(self[method].apply(self, arguments)); | |
| 63 }; | |
| 64 }; | |
| 65 }); | |
| 66 }).then(function() { | |
| 67 return testCase(); | |
| 68 }).catch(function(e) { | |
| 69 // Make sure errors thrown in the test case don't leave window.net in a bad
state. | |
| 70 reset(); | |
| 71 throw e; | |
| 72 }).then(function() { | |
| 73 return self.resolvePromises().then(function() { | |
| 74 reset(); | |
| 75 self._assert(window.net == realNet); | |
| 76 }).catch(function(e) { | |
| 77 reset(); | |
| 78 self._assert(false, "Failed to finish test:" + e); | |
| 79 }) | |
| 80 }).then(this._done, this._done); | |
| 81 }; | |
| 82 </script> | |
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