openmct/platform/features/clock/test/actions/FollowTimerActionSpec.js

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define([
    "../../src/actions/FollowTimerAction"
], function (FollowTimerAction) {
    var TIMER_SERVICE_METHODS =
        ['setTimer', 'getTimer', 'clearTimer', 'on', 'off'];

    describe("The Follow Timer action", function () {
        var testContext;
        var testModel;
        var testAdaptedObject;

        beforeEach(function () {
            testModel = {};
            testContext = { domainObject: jasmine.createSpyObj('domainObject', [
                'getModel',
                'useCapability'
            ]) };
            testAdaptedObject = { foo: 'bar' };
            testContext.domainObject.getModel.and.returnValue(testModel);
            testContext.domainObject.useCapability.and.callFake(function (c) {
                return c === 'adapter' && testAdaptedObject;
            });
        });

        it("is applicable to timers", function () {
            testModel.type = "timer";
            expect(FollowTimerAction.appliesTo(testContext)).toBe(true);
        });

        it("is inapplicable to non-timers", function () {
            testModel.type = "folder";
            expect(FollowTimerAction.appliesTo(testContext)).toBe(false);
        });

        describe("when instantiated", function () {
            var mockTimerService;
            var action;

            beforeEach(function () {
                mockTimerService = jasmine.createSpyObj(
                    'timerService',
                    TIMER_SERVICE_METHODS
                );
                action = new FollowTimerAction(mockTimerService, testContext);
            });

            it("does not interact with the timer service", function () {
                TIMER_SERVICE_METHODS.forEach(function (method) {
                    expect(mockTimerService[method]).not.toHaveBeenCalled();
                });
            });

            describe("and performed", function () {
                beforeEach(function () {
                    action.perform();
                });

                it("sets the active timer", function () {
                    expect(mockTimerService.setTimer)
                        .toHaveBeenCalledWith(testAdaptedObject);
                });
            });
        });
    });
});