mirror of
https://github.com/nasa/openmct.git
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125 lines
4.8 KiB
JavaScript
125 lines
4.8 KiB
JavaScript
/*****************************************************************************
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* Open MCT Web, Copyright (c) 2014-2015, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT Web is licensed under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT Web includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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define(
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["../src/TelemetryAggregator"],
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function (TelemetryAggregator) {
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describe("The telemetry aggregator", function () {
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var mockQ,
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mockProviders,
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mockUnsubscribes,
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aggregator;
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function mockPromise(value) {
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return {
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then: function (callback) {
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return mockPromise(callback(value));
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}
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};
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}
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function makeMockProvider(key, index) {
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var provider = jasmine.createSpyObj(
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"provider" + index,
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["requestTelemetry", "subscribe"]
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),
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unsubscribe = jasmine.createSpy("unsubscribe" + index);
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provider.requestTelemetry.andReturn({ someKey: key });
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provider.subscribe.andReturn(unsubscribe);
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// Store to verify interactions later
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mockUnsubscribes[index] = unsubscribe;
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return provider;
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}
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beforeEach(function () {
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mockQ = jasmine.createSpyObj("$q", ["all"]);
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mockQ.all.andReturn(mockPromise([]));
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mockUnsubscribes = [];
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mockProviders = ["a", "b", "c"].map(makeMockProvider);
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aggregator = new TelemetryAggregator(mockQ, mockProviders);
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});
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it("passes requests to aggregated providers", function () {
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var requests = [
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{ someKey: "some value" },
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{ someKey: "some other value" }
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];
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aggregator.requestTelemetry(requests);
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mockProviders.forEach(function (mockProvider) {
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expect(mockProvider.requestTelemetry)
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.toHaveBeenCalledWith(requests);
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});
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});
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it("merges results from all providers", function () {
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var capture = jasmine.createSpy("capture");
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mockQ.all.andReturn(mockPromise([
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{ someKey: "some value" },
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{ someOtherKey: "some other value" }
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]));
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aggregator.requestTelemetry().then(capture);
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// Verify that aggregator results were run through
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// $q.all
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expect(mockQ.all).toHaveBeenCalledWith([
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{ someKey: 'a' },
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{ someKey: 'b' },
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{ someKey: 'c' }
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]);
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expect(capture).toHaveBeenCalledWith({
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someKey: "some value",
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someOtherKey: "some other value"
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});
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});
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it("broadcasts subscriptions from all providers", function () {
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var mockCallback = jasmine.createSpy("callback"),
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subscription = aggregator.subscribe(mockCallback);
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// Make sure all providers got subscribed to
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mockProviders.forEach(function (mockProvider) {
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expect(mockProvider.subscribe).toHaveBeenCalled();
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});
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// Verify that unsubscription gets broadcast too
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mockUnsubscribes.forEach(function (mockUnsubscribe) {
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expect(mockUnsubscribe).not.toHaveBeenCalled();
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});
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subscription(); // unsubscribe
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mockUnsubscribes.forEach(function (mockUnsubscribe) {
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expect(mockUnsubscribe).toHaveBeenCalled();
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});
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});
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});
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}
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);
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