How to create a Mock object of ipcMain to run tests

[Ghost295]

IpcMain is undefined when the tests run mainWindow.ts.
I could not find a way to create a mock object of ipcMain to extend vi.fn().

Using const ipcMain = vi.fn() as MaybeMocked<typeof ipcMain.on>; or vi.fn().mockImplementation(ipcMain.on)

What am I missing?

[cawa-93]

You should mock all electron module exports. Example for BrowserWindow class:

vite-electron-builder/packages/main/tests/unit.spec.ts

Lines 10 to 24 in b5b7282

	vi.mock('electron', () => {
	const bw = vi.fn() as MaybeMocked<typeof BrowserWindow>;
	// @ts-expect-error It's work in runtime, but I Haven't idea how to fix this type error
	bw.getAllWindows = vi.fn(() => bw.mock.instances);
	bw.prototype.loadURL = vi.fn();
	bw.prototype.on = vi.fn();
	bw.prototype.destroy = vi.fn();
	bw.prototype.isDestroyed = vi.fn();
	bw.prototype.isMinimized = vi.fn();
	bw.prototype.focus = vi.fn();
	bw.prototype.restore = vi.fn();
	return {BrowserWindow: bw};
	});