在我的组件，我需要访问window.location.search。这是我在Jest测试中所做的:

Object.defineProperty(global, "window", {
  value: {
    location: {
      search: "test"
    }
  }
});

如果窗口属性在不同的测试中必须不同，我们可以将窗口模拟放到函数中，并使其可写，以便在不同的测试中重写:

function mockWindow(search, pathname) {
  Object.defineProperty(global, "window", {
    value: {
      location: {
        search,
        pathname
      }
    },
    writable: true
  });
}

并在每次测试后重置:

afterEach(() => {
  delete global.window.location;
});

我试过一个类似的测试，对我很有效……

我的代码:

export const Blah = () => {
        const BLAH = 'https://www.google.com/'
        const handleBlah = () => {
            window.open(BLAH, '_blank')
        }

    return (
        <button onClick={handleBlah}> BLAHBLAH </button>
    )
}

我的测试使用Jest:

it('should be able to render "BLAHBLAH " button ', () => {
    window.open = jest.fn();
    const BLAH = 'https://www.google.com/'
    const { getByText } = render(<Blah/>) // Get text by my page Blah
    const buttonGoToBlah = getByText('BLAHBLAH') // Get button by text
    fireEvent.click(buttonGoToBlah) // Simulate the click event

    expect(window.open).toHaveBeenCalledTimes(1) // Expect the window.open have to been called at least once.
    expect(window.open).toHaveBeenCalledWith(BLAH, '_blank'); // And the page should be the same called in my BLAH page
})

试一试:

let windowOpenSpy: jest.SpyInstance;
beforeEach(() => {
    windowOpenSpy = jest.spyOn(window, 'open');
});

it('should open window with dashboard url', () => {
    expect(windowOpenSpy).toBeCalledWith('your URL', '_blank');
});

const windowSpy = jest.spyOn(iFrame, "contentWindow", "get");
windowSpy.mockImplementation(() => ({
  location: {
    origin: "https://test.com",
    href: "href",
    hash: "hash"
  }
}));

使用global而不是window:

it('the correct URL is called', () => {
  global.open = jest.fn();
  statementService.openStatementsReport(111);
  expect(global.open).toBeCalled();
});

你也可以试试:

const open = jest.fn()
Object.defineProperty(window, 'open', open);

你可以试试这个:

import * as _Window from "jsdom/lib/jsdom/browser/Window";

window.open = jest.fn().mockImplementationOnce(() => {
    return new _Window({ parsingMode: "html" });
});

it("correct url is called", () => {
    statementService.openStatementsReport(111);
    expect(window.open).toHaveBeenCalled();
});