Created
April 30, 2015 17:34
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Mocking AMD calls
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| define([ | |
| 'intern', | |
| 'dojo/Deferred', | |
| "dojo/aspect", | |
| './MockManager', | |
| ], function ( | |
| intern, | |
| Deferred, | |
| aspect, | |
| MockManager | |
| ) { | |
| /** | |
| * Extends the 'Define' to allow it's dependencies to be captures on the object returned | |
| */ | |
| if (!window._origDefine) { | |
| // Preserve the old define | |
| window._origDefine = define; | |
| // Add some wrappers to tickle injected values | |
| window._mockDefine = function(modules, func, testdata) { | |
| var funcWrapper = function() { | |
| var args = arguments; | |
| var result = func.apply(func, args); | |
| if (result) { | |
| result._modules = {}; | |
| // Map the dependencies | |
| for (var i=0,l=modules.length;i<l;i++) { | |
| var moduleId = modules[i], | |
| moduleValue = args[i]; | |
| result._modules[moduleId] = moduleValue; | |
| } | |
| } | |
| // Return the object with its module dependencies mapped | |
| return result; | |
| } | |
| return window._origDefine(modules, funcWrapper); | |
| }; | |
| } | |
| /** | |
| * @description Mocks AMD dependencies for unit tests | |
| * @param {string} moduleId - Defines the moduleId that will have its dependencies remapped | |
| * @param {object} dependencyMap - loader map of each current dependencyId to mockObjId for remapping | |
| * | |
| * @example | |
| * return MockAMD.mock('stx/gui/MessagesToolbar', { | |
| * 'stx/gui/MessagesModel': 'tests/gui/messages/toolbar/mocks/MessagesModel' | |
| * }).then(function(mocked) { | |
| * MessagesToolbar = mocked; | |
| * }); | |
| * | |
| * | |
| */ | |
| return function MockAMD(moduleId, dependencyMap) { | |
| var dfd = new Deferred(); | |
| try { | |
| // retrieve the original module values so they can be | |
| // restored after the mocked copy has loaded | |
| var originalModule; | |
| var originalDependencies = {}; | |
| var NOT_LOADED = {}; | |
| try { | |
| originalModule = require(moduleId); | |
| require.undef(moduleId); | |
| } catch (error) { | |
| originalModule = NOT_LOADED; | |
| } | |
| // Unmap existing dependencies | |
| for (var dependencyId in dependencyMap) { | |
| try { | |
| originalDependencies[dependencyId] = require(dependencyId); | |
| require.undef(dependencyId); | |
| } catch (error) { | |
| originalDependencies[dependencyId] = NOT_LOADED; | |
| } | |
| } | |
| // remap the module's dependencies with the provided map | |
| var map = intern.config.loader.map || {}; | |
| map[moduleId] = dependencyMap; | |
| require({ | |
| map: map | |
| }); | |
| // Swap the defines | |
| window.define = window._mockDefine; | |
| // reload the module using the mocked dependencies | |
| require([moduleId], function (mockedModule) { | |
| // restore the original condition of the loader by | |
| // replacing all the modules that were unloaded | |
| require.undef(moduleId); | |
| if (originalModule !== NOT_LOADED) { | |
| define(moduleId, [], function () { | |
| return originalModule; | |
| }); | |
| } | |
| for (var dependencyId in dependencyMap) { | |
| map[moduleId][dependencyId] = dependencyId; | |
| require.undef(dependencyId); | |
| (function (originalDependency) { | |
| if (originalDependency !== NOT_LOADED) { | |
| define(dependencyId, [], function () { | |
| return originalDependency; | |
| }); | |
| } | |
| })(originalDependencies[dependencyId]); | |
| } | |
| require({ | |
| map: map | |
| }); | |
| // restore the define.. | |
| window.define = window._origDefine; | |
| // provide the mocked copy to the caller | |
| dfd.resolve(mockedModule); | |
| }); | |
| }catch(e) { | |
| console.log(e); | |
| } | |
| return dfd.promise; | |
| }; | |
| }); |
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