openmct/platform/features/plot/test/elements/PlotUpdaterSpec.js
Victor Woeltjen ffcd91f88d [Plot] Add test cases
Add test cases to spec for PlotUpdater to reflect changes
for merging streaming and historical data. WTD-806.
2015-04-17 16:55:49 -07:00

172 lines
7.0 KiB
JavaScript

/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine,Float32Array*/
/**
* MergeModelsSpec. Created by vwoeltje on 11/6/14.
*/
define(
["../../src/elements/PlotUpdater"],
function (PlotUpdater) {
"use strict";
describe("A plot updater", function () {
var mockSubscription,
testDomain,
testRange,
testDomainValues,
testRangeValues,
mockSeries,
updater;
function makeMockDomainObject(id) {
var mockDomainObject = jasmine.createSpyObj(
"object-" + id,
[ "getId", "getCapability", "getModel" ]
);
mockDomainObject.getId.andReturn(id);
return mockDomainObject;
}
beforeEach(function () {
var ids = [ 'a', 'b', 'c' ],
mockObjects = ids.map(makeMockDomainObject);
mockSubscription = jasmine.createSpyObj(
"subscription",
[ "getDomainValue", "getRangeValue", "getTelemetryObjects" ]
);
mockSeries = jasmine.createSpyObj(
'series',
['getPointCount', 'getDomainValue', 'getRangeValue']
);
testDomain = "testDomain";
testRange = "testRange";
testDomainValues = { a: 3, b: 7, c: 13 };
testRangeValues = { a: 123, b: 456, c: 789 };
mockSubscription.getTelemetryObjects.andReturn(mockObjects);
mockSubscription.getDomainValue.andCallFake(function (mockObject) {
return testDomainValues[mockObject.getId()];
});
mockSubscription.getRangeValue.andCallFake(function (mockObject) {
return testRangeValues[mockObject.getId()];
});
updater = new PlotUpdater(
mockSubscription,
testDomain,
testRange,
1350 // Smaller max size for easier testing
);
});
it("provides one buffer per telemetry object", function () {
expect(updater.getLineBuffers().length).toEqual(3);
});
it("changes buffer count if telemetry object counts change", function () {
mockSubscription.getTelemetryObjects
.andReturn([makeMockDomainObject('a')]);
updater.update();
expect(updater.getLineBuffers().length).toEqual(1);
});
it("can handle delayed telemetry object availability", function () {
// The case can occur where getTelemetryObjects() returns an
// empty array - specifically, while objects are still being
// loaded. The updater needs to be able to cope with that
// case.
var tmp = mockSubscription.getTelemetryObjects();
mockSubscription.getTelemetryObjects.andReturn([]);
// Reinstantiate with the empty subscription
updater = new PlotUpdater(
mockSubscription,
testDomain,
testRange
);
// Should have 0 buffers for 0 objects
expect(updater.getLineBuffers().length).toEqual(0);
// Restore the three objects the test subscription would
// normally have.
mockSubscription.getTelemetryObjects.andReturn(tmp);
updater.update();
// Should have 3 buffers for 3 objects
expect(updater.getLineBuffers().length).toEqual(3);
});
it("accepts historical telemetry updates", function () {
var mockObject = mockSubscription.getTelemetryObjects()[0];
mockSeries.getPointCount.andReturn(3);
mockSeries.getDomainValue.andCallFake(function (i) {
return 1000 + i * 1000;
});
mockSeries.getRangeValue.andReturn(10);
// PlotLine & PlotLineBuffer are tested for most of the
// details here, so just check for some expected side
// effect; in this case, should see more points in the buffer
expect(updater.getLineBuffers()[0].getLength()).toEqual(1);
updater.addHistorical(mockObject, mockSeries);
expect(updater.getLineBuffers()[0].getLength()).toEqual(4);
});
it("clears the domain offset if no objects are present", function () {
mockSubscription.getTelemetryObjects.andReturn([]);
updater.update();
expect(updater.getDomainOffset()).toBeUndefined();
});
it("handles empty historical telemetry updates", function () {
// General robustness check for when a series is empty
var mockObject = mockSubscription.getTelemetryObjects()[0];
mockSeries.getPointCount.andReturn(0);
mockSeries.getDomainValue.andCallFake(function (i) {
return 1000 + i * 1000;
});
mockSeries.getRangeValue.andReturn(10);
// PlotLine & PlotLineBuffer are tested for most of the
// details here, so just check for some expected side
// effect; in this case, should see more points in the buffer
expect(updater.getLineBuffers()[0].getLength()).toEqual(1);
updater.addHistorical(mockObject, mockSeries);
expect(updater.getLineBuffers()[0].getLength()).toEqual(1);
});
it("can initialize domain offset from historical telemetry", function () {
var tmp = mockSubscription.getTelemetryObjects();
mockSubscription.getTelemetryObjects.andReturn([]);
// Reinstantiate with the empty subscription
updater = new PlotUpdater(
mockSubscription,
testDomain,
testRange
);
// Restore subscription, provide some historical data
mockSubscription.getTelemetryObjects.andReturn(tmp);
mockSeries.getPointCount.andReturn(3);
mockSeries.getDomainValue.andCallFake(function (i) {
return 1000 + i * 1000;
});
mockSeries.getRangeValue.andReturn(10);
// PlotLine & PlotLineBuffer are tested for most of the
// details here, so just check for some expected side
// effect; in this case, should see more points in the buffer
expect(updater.getDomainOffset()).toBeUndefined();
updater.addHistorical(tmp[0], mockSeries);
expect(updater.getDomainOffset()).toBeDefined();
});
});
}
);