describe('greeter function', () => {
  let timeoutSpy: jest.SpyInstance;

  // Act before assertions
  beforeAll(async () => {
    timeoutSpy = jest.spyOn(global, 'setTimeout');

    //const p: Promise<string> = greeter(name);
    jest.runOnlyPendingTimers();
  });

  // Teardown (cleanup) after assertions
  afterAll(() => {
    timeoutSpy.mockRestore();
  });

  // Assert if setTimeout was called properly
  it('delays the greeting by 2 seconds', () => {});

  // Assert greeter result
  it('greets a user with `Hello, {name}` message', () => {});
});