房间返回空白对象

fetch('/api/rooms')
  .then(response => {
    if (!response.ok) {
      throw new Error('Network response was not ok');
    }
    return response.json();
  })
  .then(data => {
    if (Object.keys(data).length === 0) {
      console.error('Received an empty object');
    } else {
      console.log('Rooms data:', data);
    }
  })
  .catch(error => {
    console.error('There has been a problem with your fetch operation:', error);
  });

function getRooms() {
  try {
    const rooms = fetchRoomsFromDatabase(); // 假设这是获取房间数据的函数
    if (rooms && Object.keys(rooms).length > 0) {
      return rooms;
    } else {
      console.error('Rooms data is empty');
      return {}; // 或者抛出一个自定义错误
    }
  } catch (error) {
    console.error('Failed to fetch rooms:', error);
    throw error;
  }
}

describe('getRooms', () => {
  it('should return an empty object if no rooms are available', () => {
    // 模拟没有房间数据的情况
    const result = getRooms();
    expect(result).toEqual({});
  });

  it('should return a non-empty object if rooms are available', () => {
    // 模拟有房间数据的情况
    const mockRooms = { room1: { id: 'room1', name: 'Room One' } };
    jest.spyOn(database, 'fetchRoomsFromDatabase').mockReturnValue(mockRooms);
    const result = getRooms();
    expect(result).toEqual(mockRooms);
  });
});