Ava+Sinon 联合测试参考错误：窗口未定义

如何解决Ava+Sinon 联合测试参考错误：窗口未定义

我尝试编写一个测试文件来测试其中一个模块。该模块有一行访问 window.location.origin 的代码，这在运行单元测试时会导致错误：ReferenceError: window is not defined.

被测模块和测试用例代码：

myfile.js:

const isExternal =  window.location.origin.includes('.com');

const getAccess = () => {
    if(isExternal){
        //Do somthing
    }
}

myfile.test.js:

const test = require('ava');
const sinon = require('sinon');
const myfile = require('../../src/myfile');

test.serial('test myfile',t => {
    myfile.isExternal = true;
    //Assert below
})

我的问题是当我在代码中有 const myfile = require('../../src/myfile'); 行并运行 npm run test 时，它会显示一个错误：

ReferenceError: window is not defined
tests\myfile.test.js exited with a non-zero exit code: 1