openmct/platform/entanglement/test/services/MockLinkService.js

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2015-06-11 21:22:18 +00:00
/*****************************************************************************
* Open MCT Web, Copyright (c) 2014-2015, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT Web is licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* Open MCT Web includes source code licensed under additional open source
* licenses. See the Open Source Licenses file (LICENSES.md) included with
* this source code distribution or the Licensing information page available
* at runtime from the About dialog for additional information.
*****************************************************************************/
define(
[
'../ControlledPromise'
],
function (ControlledPromise) {
/**
* MockLinkService provides the same interface as the linkService,
* returning promises where it would normally do so. At it's core,
* it is a jasmine spy object, but it also tracks the promises it
* returns and provides shortcut methods for resolving those promises
* synchronously.
*
* Usage:
*
* ```javascript
* var linkService = new MockLinkService();
*
* // validate is a standard jasmine spy.
* linkService.validate.andReturn(true);
* var isValid = linkService.validate(object, parentObject);
* expect(isValid).toBe(true);
*
* // perform returns promises and tracks them.
* var whenLinked = jasmine.createSpy('whenLinked');
* linkService.perform(object, parentObject).then(whenLinked);
* expect(whenLinked).not.toHaveBeenCalled();
* linkService.perform.mostRecentCall.promise.resolve('someArg');
* expect(whenLinked).toHaveBeenCalledWith('someArg');
* ```
*/
function MockLinkService() {
// track most recent call of a function,
// perform automatically returns
var mockLinkService = jasmine.createSpyObj(
'MockLinkService',
[
'validate',
'perform'
]
);
mockLinkService.perform.andCallFake(function (object) {
var performPromise = new ControlledPromise();
this.perform.mostRecentCall.promise = performPromise;
this.perform.calls[this.perform.calls.length - 1].promise =
performPromise;
return performPromise.then(function (overrideObject) {
if (overrideObject) {
return overrideObject;
}
return object;
});
});
return mockLinkService;
}
return MockLinkService;
}
);