},

];

function requireHookEvent(handler: ReturnType<typeof vi.fn>): InternalHookEvent {

const call = handler.mock.calls.at(0);

if (!call) {

throw new Error("expected hook handler call");

}

return call[0] as InternalHookEvent;

}

describe("message hooks", () => {

beforeEach(() => {

clearInternalHooks();

);

expect(handler).toHaveBeenCalledOnce();

const event = handler.mock.calls[0][0] as InternalHookEvent;

const event = requireHookEvent(handler);

expect(event.type).toBe("message");

expect(event.action).toBe(testCase.action);

testCase.assertContext(event.context);

);

const after = new Date();

const event = handler.mock.calls[0][0] as InternalHookEvent;

const event = requireHookEvent(handler);

expect(event.timestamp).toBeInstanceOf(Date);

expect(event.timestamp.getTime()).toBeGreaterThanOrEqual(before.getTime());

expect(event.timestamp.getTime()).toBeLessThanOrEqual(after.getTime());