MockService Doesn't Work with Services Defined as an ES6 Class

[jongunter]

This fails (apologies for the whitespace issues)

 class MyService {

        doAThing(){
            return 'bad';
        }

    }

////

        bard.appModule('app');

        bard.inject(this, 'MyService');
        bard.mockService(MyService, {
            _default: false
        });

    it('returns the proper values', ()=> {
        expect(MyService.doAThing()).toBe(false);
    })

Meanwhile, this succeeds:

  function MyService() {
        var returnBad = function () {
            return 'bad';
        };
        this.doAThing = returnBad;
    }

////

        bard.appModule('app');

        bard.inject(this, 'MyService');
        bard.mockService(MyService, {
            _default: false
        });

    it('returns the proper values', ()=> {
        expect(MyService.doAThing()).toBe(false);
    })