29 lines
815 B
JavaScript
29 lines
815 B
JavaScript
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import dispatch, { init, worker } from './dispatcher-main';
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describe('The dispatcher-main', () => {
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var postMessage = jest.fn();
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beforeEach(() => {
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global.SharedWorker = jest.fn(function (source) {
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this.source = source;
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this.port = {
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postMessage,
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};
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return this;
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});
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init();
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});
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test('should create a new shared web worker', () => {
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expect(SharedWorker).toBeCalled();
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});
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test('should create a onmessage function', () => {
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expect(worker.port.onmessage).toBeDefined();
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});
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test('should return a promise if no callback is provided', () => {
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expect(dispatch('ping')).toBeInstanceOf(Promise);
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});
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test('should send back the message', () => {
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dispatch('ping');
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expect(postMessage).toBeCalledWith({ id: 0, payload: 'ping' });
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});
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});
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