在jasmine测试中模拟DirectLine应用程序接口调用？

let directLineApi = jasmine.createSpyObj('directLineApi', ['sendMessage', 'receiveMessage']);

directLineApi.sendMessage.and.returnValue({ success: true });
directLineApi.receiveMessage.and.returnValue({ message: 'Hello' });

it('should simulate DirectLine API calls', () => {
  // 模拟sendMessage方法调用
  let result = directLineApi.sendMessage('Hello');
  expect(result).toEqual({ success: true });

  // 模拟receiveMessage方法调用
  result = directLineApi.receiveMessage();
  expect(result).toEqual({ message: 'Hello' });

  // 断言方法是否被调用
  expect(directLineApi.sendMessage).toHaveBeenCalled();
  expect(directLineApi.receiveMessage).toHaveBeenCalled();
});