Mocking `document` in jest

Question

I\'m trying to write tests for my web components projects in jest. I already use babel with es2015 preset. I\'m facing an issue while loading the js file. I have followed a

Answer 1

I have been struggling with mocking document for a project I am on. I am calling document.querySelector() inside a React component and need to make sure it is working right. Ultimately this is what worked for me:

it('should test something', () => {
    const spyFunc = jest.fn();
    Object.defineProperty(global.document, 'querySelector', { value: spyFunc });
    
    expect(spyFunc).toHaveBeenCalled()
});