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| 1 | +type IpcListener = (event: unknown, path: string) => void; |
| 2 | + |
| 3 | +const ipcListeners = new Map<string, IpcListener>(); |
| 4 | +const on = jest.fn((channel: string, listener: IpcListener) => { |
| 5 | + ipcListeners.set(channel, listener); |
| 6 | +}); |
| 7 | + |
| 8 | +jest.mock('electron', () => ({ |
| 9 | + ipcRenderer: { |
| 10 | + on: (channel: string, listener: IpcListener) => on(channel, listener), |
| 11 | + }, |
| 12 | +})); |
| 13 | + |
| 14 | +const emit = (path: string) => { |
| 15 | + const listener = ipcListeners.get('navigate-to-route'); |
| 16 | + if (!listener) throw new Error('navigate-to-route listener not registered'); |
| 17 | + listener({}, path); |
| 18 | +}; |
| 19 | + |
| 20 | +describe('servers/preload/navigateToRoute', () => { |
| 21 | + let onNavigateToRoute: (cb: (path: string) => void) => void; |
| 22 | + let listenToNavigateToRouteRequests: () => void; |
| 23 | + |
| 24 | + beforeEach(async () => { |
| 25 | + jest.resetModules(); |
| 26 | + ipcListeners.clear(); |
| 27 | + on.mockClear(); |
| 28 | + const mod = await import('./navigateToRoute'); |
| 29 | + onNavigateToRoute = mod.onNavigateToRoute; |
| 30 | + listenToNavigateToRouteRequests = mod.listenToNavigateToRouteRequests; |
| 31 | + }); |
| 32 | + |
| 33 | + it('registers the ipcRenderer listener only once', () => { |
| 34 | + listenToNavigateToRouteRequests(); |
| 35 | + listenToNavigateToRouteRequests(); |
| 36 | + expect(on).toHaveBeenCalledTimes(1); |
| 37 | + expect(on).toHaveBeenCalledWith('navigate-to-route', expect.any(Function)); |
| 38 | + }); |
| 39 | + |
| 40 | + it('delivers the path to a callback registered before the event', () => { |
| 41 | + listenToNavigateToRouteRequests(); |
| 42 | + const cb = jest.fn(); |
| 43 | + onNavigateToRoute(cb); |
| 44 | + |
| 45 | + emit('/channel/general'); |
| 46 | + |
| 47 | + expect(cb).toHaveBeenCalledWith('/channel/general'); |
| 48 | + }); |
| 49 | + |
| 50 | + it('buffers a path that arrives before the callback registers, then flushes once', () => { |
| 51 | + listenToNavigateToRouteRequests(); |
| 52 | + |
| 53 | + emit('/admin/rooms'); |
| 54 | + |
| 55 | + const cb = jest.fn(); |
| 56 | + onNavigateToRoute(cb); |
| 57 | + expect(cb).toHaveBeenCalledTimes(1); |
| 58 | + expect(cb).toHaveBeenCalledWith('/admin/rooms'); |
| 59 | + |
| 60 | + // The buffered path is consumed: a later registration gets nothing extra. |
| 61 | + const cb2 = jest.fn(); |
| 62 | + onNavigateToRoute(cb2); |
| 63 | + expect(cb2).not.toHaveBeenCalled(); |
| 64 | + }); |
| 65 | +}); |
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