openmct/platform/features/plot/test/elements/PlotLimitTrackerSpec.js

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define(
    ["../../src/elements/PlotLimitTracker"],
    function (PlotLimitTracker) {

        describe("A plot's limit tracker", function () {
            var mockHandle,
                testRange,
                mockTelemetryObjects,
                testData,
                tracker;

            beforeEach(function () {
                testRange = "some-range";
                testData = {};
                mockHandle = jasmine.createSpyObj(
                    'handle',
                    ['getTelemetryObjects', 'getDatum']
                );
                mockTelemetryObjects = ['a', 'b', 'c'].map(function (id, i) {
                    var mockTelemetryObject = jasmine.createSpyObj(
                            'object-' + id,
                            ['getId', 'getCapability', 'getModel']
                        ),
                        mockLimitCapability = jasmine.createSpyObj(
                            'limit-' + id,
                            ['evaluate']
                        );
                    testData[id] = { id: id, value: i };
                    mockTelemetryObject.getId.andReturn(id);
                    mockTelemetryObject.getCapability.andCallFake(function (key) {
                        return key === 'limit' && mockLimitCapability;
                    });
                    mockLimitCapability.evaluate
                        .andReturn({ cssClass: 'alarm-' + id});
                    return mockTelemetryObject;
                });
                mockHandle.getTelemetryObjects.andReturn(mockTelemetryObjects);
                mockHandle.getDatum.andCallFake(function (telemetryObject) {
                    return testData[telemetryObject.getId()];
                });

                tracker = new PlotLimitTracker(mockHandle, testRange);
            });

            it("initially provides no limit state", function () {
                mockTelemetryObjects.forEach(function (mockTelemetryObject) {
                    expect(tracker.getLegendClass(mockTelemetryObject))
                        .toBeUndefined();
                });
            });

            describe("when asked to update", function () {
                beforeEach(function () {
                    tracker.update();
                });

                it("evaluates limits using the limit capability", function () {
                    mockTelemetryObjects.forEach(function (mockTelemetryObject) {
                        var id = mockTelemetryObject.getId(),
                            mockLimit =
                                mockTelemetryObject.getCapability('limit');
                        expect(mockLimit.evaluate)
                            .toHaveBeenCalledWith(testData[id], testRange);
                    });
                });

                it("exposes legend classes returned by the limit capability", function () {
                    mockTelemetryObjects.forEach(function (mockTelemetryObject) {
                        var id = mockTelemetryObject.getId();
                        expect(tracker.getLegendClass(mockTelemetryObject))
                            .toEqual('alarm-' + id);
                    });
                });
            });

        });
    }
);