Mocking/Stubbing `super` calls
问题 I would like to mock out super calls, especially constructors in some ES6 classes. For example import Bar from 'bar'; class Foo extends Bar { constructor(opts) { ... super(opts); } someFunc() { super.someFunc('asdf'); } } And then in my test, I would like to do something like import Foo from '../lib/foo'; import Bar from 'bar'; describe('constructor', function() { it('should call super', function() { let opts = Symbol('opts'); let constructorStub = sinon.stub(Bar, 'constructor'); new Foo(opts