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112 lines
4.2 KiB
JavaScript
112 lines
4.2 KiB
JavaScript
/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine,Float32Array*/
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/**
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* MergeModelsSpec. Created by vwoeltje on 11/6/14.
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*/
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define(
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["../../src/elements/PlotUpdater"],
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function (PlotUpdater) {
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"use strict";
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describe("A plot updater", function () {
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var mockSubscription,
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testDomain,
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testRange,
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testDomainValues,
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testRangeValues,
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updater;
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function makeMockDomainObject(id) {
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var mockDomainObject = jasmine.createSpyObj(
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"object-" + id,
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[ "getId", "getCapability", "getModel" ]
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);
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mockDomainObject.getId.andReturn(id);
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return mockDomainObject;
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}
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beforeEach(function () {
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var ids = [ 'a', 'b', 'c' ],
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mockObjects = ids.map(makeMockDomainObject);
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mockSubscription = jasmine.createSpyObj(
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"subscription",
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[ "getDomainValue", "getRangeValue", "getTelemetryObjects" ]
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);
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testDomain = "testDomain";
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testRange = "testRange";
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testDomainValues = { a: 3, b: 7, c: 13 };
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testRangeValues = { a: 123, b: 456, c: 789 };
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mockSubscription.getTelemetryObjects.andReturn(mockObjects);
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mockSubscription.getDomainValue.andCallFake(function (mockObject) {
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return testDomainValues[mockObject.getId()];
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});
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mockSubscription.getRangeValue.andCallFake(function (mockObject) {
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return testRangeValues[mockObject.getId()];
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});
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updater = new PlotUpdater(
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mockSubscription,
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testDomain,
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testRange
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);
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});
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it("provides one buffer per telemetry object", function () {
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expect(updater.getBuffers().length).toEqual(3);
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});
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it("changes buffer count if telemetry object counts change", function () {
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mockSubscription.getTelemetryObjects
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.andReturn([makeMockDomainObject('a')]);
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updater.update();
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expect(updater.getBuffers().length).toEqual(1);
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});
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it("maintains a buffer of received telemetry", function () {
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// Count should be large enough to trigger a buffer resize
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var count = 1000,
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i;
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// Increment values exposed by subscription
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function increment() {
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Object.keys(testDomainValues).forEach(function (k) {
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testDomainValues[k] += 1;
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testRangeValues[k] += 1;
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});
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}
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// Simulate a lot of telemetry updates
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for (i = 0; i < count; i += 1) {
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updater.update();
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expect(updater.getLength(0)).toEqual(i + 1);
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expect(updater.getLength(1)).toEqual(i + 1);
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expect(updater.getLength(2)).toEqual(i + 1);
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increment();
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}
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// Domain offset should be lowest domain value
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expect(updater.getDomainOffset()).toEqual(3);
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// Test against initial values, offset by count,
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// as was the case during each update
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for (i = 0; i < count; i += 1) {
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expect(updater.getBuffers()[0][i * 2])
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.toEqual(3 + i - 3);
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expect(updater.getBuffers()[0][i * 2 + 1])
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.toEqual(123 + i);
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expect(updater.getBuffers()[1][i * 2])
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.toEqual(7 + i - 3);
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expect(updater.getBuffers()[1][i * 2 + 1])
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.toEqual(456 + i);
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expect(updater.getBuffers()[2][i * 2])
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.toEqual(13 + i - 3);
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expect(updater.getBuffers()[2][i * 2 + 1])
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.toEqual(789 + i);
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}
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});
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});
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}
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); |