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/*****************************************************************************
* Open MCT, Copyright (c) 2014-2021, United States Government
* as represented by the Administrator of the National Aeronautics and Space
* Administration. All rights reserved.
*
* Open MCT 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 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(
["../../src/services/Topic"],
function (Topic) {
describe("The 'topic' service", function () {
var topic,
mockLog,
testMessage,
mockCallback;
beforeEach(function () {
testMessage = { someKey: "some value"};
mockLog = jasmine.createSpyObj(
'$log',
['error', 'warn', 'info', 'debug']
);
mockCallback = jasmine.createSpy('callback');
topic = new Topic(mockLog);
});
it("notifies listeners on a topic", function () {
topic("abc").listen(mockCallback);
topic("abc").notify(testMessage);
expect(mockCallback).toHaveBeenCalledWith(testMessage);
});
it("does not notify listeners across topics", function () {
topic("abc").listen(mockCallback);
topic("xyz").notify(testMessage);
expect(mockCallback).not.toHaveBeenCalledWith(testMessage);
});
it("does not notify listeners after unlistening", function () {
topic("abc").listen(mockCallback)(); // Unlisten immediately
topic("abc").notify(testMessage);
expect(mockCallback).not.toHaveBeenCalledWith(testMessage);
});
it("provides anonymous private topics", function () {
var t1 = topic(), t2 = topic();
t1.listen(mockCallback);
t2.notify(testMessage);
expect(mockCallback).not.toHaveBeenCalledWith(testMessage);
t1.notify(testMessage);
expect(mockCallback).toHaveBeenCalledWith(testMessage);
});
it("is robust against errors thrown by listeners", function () {
var mockBadCallback = jasmine.createSpy("bad-callback"),
t = topic();
mockBadCallback.and.callFake(function () {
throw new Error("I'm afraid I can't do that.");
});
t.listen(mockBadCallback);
t.listen(mockCallback);
t.notify(testMessage);
expect(mockCallback).toHaveBeenCalledWith(testMessage);
});
});
}
);
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