Writing Integration Tests

test('real-time updates', async () => {
  const wsClient = new WebSocket('ws://localhost:3000');
  const connected = await waitForSocketConnection(wsClient);
  expect(connected).toBe(true);

  const dataPromise = waitForSocketData(wsClient);
  await triggerUpdate();
  
  const receivedData = await dataPromise;
  expect(receivedData).toMatchObject({
    type: 'update',
    data: expect.any(Object)
  });
});