角度测试:在电容浏览器插件中“期望间谍，但得到功能”

Question

我在单元测试方面有很多问题，这是我第一次做单元测试。嗯，我在浏览器插件测试上有一个错误：

Error: <toHaveBeenCalled> : Expected a spy, but got Function.

在我的部分，我有一个：

    async goToPage(path: string) {
        let url_ = environment.apiUrl + path;
        await Browser.open({url : url_,presentationStyle: 'popover'})
    }

并试图通过多种方式解决这一问题：

it('should use In App Browser', () => {
    const browser = Browser;
    const spy = spyOn(browser,'open');
    const url = '/api/resource/TOS';
    component.goToPage(url);
    expect(spy.call).toHaveBeenCalled();
}); 

it('should use In App Browser', () => {
    spyOn(Browser,'open');
    expect(Browser.open).toHaveBeenCalled();
});
//Error: <toHaveBeenCalled> : Expected a spy, but got Function.


it('should use In App Browser', () => {
    const browser = Browser;
    spyOn(browser,'open');
    expect(browser.open).toHaveBeenCalled();
});
//Expected a spy, but got Function.


it('should use In App Browser', () => {
    const browser = Browser;
    spyOn(browser,'open').and.returnValue(Promise.resolve());;
    expect(browser.open).toHaveBeenCalled();
});
//Expected a spy, but got Function.


it('should use In App Browser', async() => {
    const browser = Browser;
    spyOn(browser, 'open')

    expect(browser.open).toHaveBeenCalled();
});
//Error: <toHaveBeenCalled> : Expected a spy, but got Function.
//Usage: expect(<spyObj>).toHaveBeenCalled()


it('should use In App Browser', async() => {
  const browser = Browser;
  spyOn(browser, 'open')
  expect(await browser.open).toHaveBeenCalled();
});
//Error: <toHaveBeenCalled> : Expected a spy, but got Function.


it('should create', (done) => {
  let browser = Browser;
  spyOn<any>(browser, 'open');
  const url_ = environment.apiUrl + '/api/resource/About';
  fixture.whenStable().then(() => {
      expect(browser.open).toHaveBeenCalled();   expect(browser.open).toHaveBeenCalledWith({url : url_,presentationStyle: 'popover'});
      done();
  });
});
//Unhandled promise rejection: Error: <toHaveBeenCalled> : Expected a spy, but got Function.
//Usage: expect(<spyObj>).toHaveBeenCalled()

你知道怎么解决吗？谢谢!

Answer 1

看看这个官方指南：https://capacitorjs.com/docs/guides/mocking-plugins，您必须创建一个__mocks__/@capacitor文件夹(参见这里)。