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| 1 // Copyright 2013 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 // Common test utilities. |
| 6 |
| 7 function emptyMock() {} |
| 8 |
| 9 // Container for event handlers added by mocked 'addListener' functions. |
| 10 var mockEventHandlers = {}; |
| 11 |
| 12 /** |
| 13 * Mocks 'addListener' function of an API event. The mocked function will keep |
| 14 * track of handlers. |
| 15 * @param {Object} topLevelContainer Top-level container of the original |
| 16 * function. Can be either 'chrome' or 'instrumented'. |
| 17 * @param {string} eventIdentifier Event identifier, such as |
| 18 * 'runtime.onSuspend'. |
| 19 */ |
| 20 function mockChromeEvent(topLevelContainer, eventIdentifier) { |
| 21 var eventIdentifierParts = eventIdentifier.split('.'); |
| 22 var eventName = eventIdentifierParts.pop(); |
| 23 var originalMethodContainer = topLevelContainer; |
| 24 var mockEventContainer = mockEventHandlers; |
| 25 eventIdentifierParts.forEach(function(fragment) { |
| 26 originalMethodContainer = |
| 27 originalMethodContainer[fragment] = |
| 28 originalMethodContainer[fragment] || {}; |
| 29 mockEventContainer = |
| 30 mockEventContainer[fragment] = |
| 31 mockEventContainer[fragment] || {}; |
| 32 }); |
| 33 |
| 34 mockEventContainer[eventName] = []; |
| 35 originalMethodContainer[eventName] = { |
| 36 addListener: function(callback) { |
| 37 mockEventContainer[eventName].push(callback); |
| 38 } |
| 39 }; |
| 40 } |
| 41 |
| 42 /** |
| 43 * Gets the array of event handlers added by a mocked 'addListener' function. |
| 44 * @param {string} eventIdentifier Event identifier, such as |
| 45 * 'runtime.onSuspend'. |
| 46 * @return {Array.<Function>} Array of handlers. |
| 47 */ |
| 48 function getMockHandlerContainer(eventIdentifier) { |
| 49 var eventIdentifierParts = eventIdentifier.split('.'); |
| 50 var mockEventContainer = mockEventHandlers; |
| 51 eventIdentifierParts.forEach(function(fragment) { |
| 52 mockEventContainer = mockEventContainer[fragment]; |
| 53 }); |
| 54 |
| 55 return mockEventContainer; |
| 56 } |
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