34 lines
916 B
JavaScript
34 lines
916 B
JavaScript
import worker from './dispatcher-worker';
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jest.mock('../db', () => ({
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initDb: () => 'called initDb',
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}));
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describe('The dispatcher-worker ', () => {
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let port;
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beforeEach(() => {
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port = {
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postMessage: jest.fn(),
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};
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worker.onconnect({ ports: [port] });
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});
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test('creates a onmessage function', () => {
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expect(port.onmessage).toBeDefined();
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expect(port.postMessage).not.toBeCalled();
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});
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test('receives a ping and sends back an unknownAction', async () => {
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await port.onmessage({ data: { id: 5, payload: { action: 'ping' } } });
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expect(port.postMessage).toBeCalledWith({
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id: 5,
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payload: 'unknownAction',
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});
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});
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test('calls initDb when required', async () => {
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await port.onmessage({ data: { id: 5, payload: { action: 'initDb' } } });
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expect(port.postMessage).toBeCalledWith({
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id: 5,
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payload: 'called initDb',
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});
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});
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});
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