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ipcService.spec.ts
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ipcService.spec.ts
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import { ipcRenderer } from 'electron';
import { createIpcSender, createIpcStreamer } from './ipcService';
describe('IpcService', () => {
it('should use the correct channel request name', async () => {
ipcRenderer.once = jest.fn().mockImplementation((chan, cb) => cb(null, '321'));
ipcRenderer.send = jest.fn();
const ipc = createIpcSender('Test Name', 'pre1');
await ipc('chan1', { node: 123 });
expect(ipcRenderer.send).toHaveBeenCalledWith('pre1-chan1-request', {
replyTo: expect.stringContaining('pre1-chan1-response'),
node: 123,
});
});
it('should return the correct value', async () => {
ipcRenderer.once = jest.fn().mockImplementation((chan, cb) => cb(null, '321'));
ipcRenderer.send = jest.fn();
const ipc = createIpcSender('Test Name', 'pre1');
const result = await ipc('chan1', 123);
expect(result).toEqual('321');
});
it('should fail if an error is returned', async () => {
const err = 'Something went wrong';
ipcRenderer.once = jest.fn().mockImplementation((chan, cb) => cb(null, { err }));
const ipc = createIpcSender('Test Name', 'pre1');
await expect(ipc('chan1', 123)).rejects.toThrow(err);
});
it('should call the callback function with the correct value', async () => {
ipcRenderer.send = jest.fn();
ipcRenderer.on = jest.fn().mockImplementation((chan, cb) => cb(null, '456'));
const callback = jest.fn();
const streamer = createIpcStreamer('Test Name', 'pre1');
streamer.subscribe('chan1', { node: { ports: { rest: 123 } } }, callback);
expect(ipcRenderer.on).toHaveBeenCalledWith(
expect.stringContaining('pre1-chan1-stream'),
callback,
);
});
it('should unsubscribe from the ipc', async () => {
ipcRenderer.send = jest.fn();
ipcRenderer.off = jest.fn();
ipcRenderer.on = jest.fn().mockImplementation((chan, cb) => cb(null, '456'));
const callback = jest.fn();
const streamer = createIpcStreamer('Test Name', 'pre1');
streamer.subscribe('chan1', { node: { ports: { rest: 123 } } }, callback);
streamer.unsubscribe('chan1', callback);
expect(ipcRenderer.off).toHaveBeenCalledWith(
expect.stringContaining('pre1-chan1-stream'),
callback,
);
});
});