87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
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import * as luxon from 'luxon';
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import * as ClockLib from 'src/lib/clock';
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describe('src/lib/clock', () => {
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describe('Clock', () => {
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let fakeDateTime = null;
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beforeEach(() => {
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fakeDateTime = luxon.DateTime.local(1987, 10, 3, 8, 0, 1, 200);
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spyOn(window, 'setTimeout').and.returnValue(123);
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spyOn(window, 'clearTimeout');
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spyOn(luxon.DateTime, 'local').and.returnValue(fakeDateTime);
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});
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describe('constructor', () => {
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it('initializes an instance', () => {
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const clock = new ClockLib.Clock();
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expect(clock.now).toEqual(fakeDateTime);
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expect(clock.timeout).toBe(null);
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});
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});
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describe('clearTimeout', () => {
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it('is a noop is timeout is null', () => {
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const clock = new ClockLib.Clock();
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clock.clearTimeout();
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expect(window.clearTimeout).not.toHaveBeenCalled();
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});
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it('clears the timeout', () => {
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const clock = new ClockLib.Clock();
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clock.timeout = 123;
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clock.clearTimeout();
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expect(window.clearTimeout).toHaveBeenCalledWith(123);
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expect(clock.timeout).toBe(null);
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});
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});
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describe('onTimeout', () => {
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it('handles the clock timeout', () => {
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const newFakeDateTime = fakeDateTime.plus({minutes: 1});
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luxon.DateTime.local.and.returnValue(newFakeDateTime);
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const clock = new ClockLib.Clock();
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spyOn(clock, 'clearTimeout');
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spyOn(clock, 'fireEvent');
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spyOn(clock, 'start');
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clock.onTimeout();
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expect(clock.now).toEqual(newFakeDateTime);
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expect(clock.clearTimeout).toHaveBeenCalled();
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expect(clock.fireEvent).toHaveBeenCalledWith('tick');
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expect(clock.start).toHaveBeenCalled();
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});
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});
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describe('start', () => {
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it('starts the clock', () => {
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const clock = new ClockLib.Clock();
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clock.start();
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expect(window.setTimeout).toHaveBeenCalledWith(clock.onTimeout, 58810);
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});
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});
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describe('stop', () => {
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it('stops the clock', () => {
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const clock = new ClockLib.Clock();
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spyOn(clock, 'clearTimeout');
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clock.stop();
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expect(clock.clearTimeout).toHaveBeenCalled();
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});
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});
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});
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});
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