How to mock window.location.href with Jest + Vuejs?

I have resolved this issue by adding writable: true and move it to beforeEach

Here is my sample code:

global.window = Object.create(window);
const url = "http://dummy.com";
Object.defineProperty(window, "location", {
    value: {
       href: url
    },
    writable: true
});

2020 Update

---

Basic

The URL object has a lot of the same functionality as the Location object. In other words, it includes properties such as pathname, search, hostname, etc. So for most cases, you can do the following:

delete window.location
window.location = new URL('https://www.example.com')

Advanced

You can also mock Location methods that you might need, which don't exist on the URL interface:

const location = new URL('https://www.example.com')
location.assign = jest.fn()
location.replace = jest.fn()
location.reload = jest.fn()

delete window.location
window.location = location

You can try:

global.window = Object.create(window);
const url = "http://dummy.com";
Object.defineProperty(window, 'location', {
  value: {
    href: url
  }
});
expect(window.location.href).toEqual(url);  

Have a look at the Jest Issue for that problem:
Jest Issue