Using two `done` functions in Ember mocha and Chai

Using ember mocha and chai is it possible have two dones?

Trying to do something like this (doesn’t work)

function doSomething () {
      it('somethinng else', function (done) {
        var res = false
        Ember.run.later(() => {
          expect(res).to.be.true
          done()
        })
      })
    }
    it('somethinng', function () {
      doSomething()
    })

Only way I can get it to work is to do

function doSomething (done) {
      var res = false
      Ember.run.later(() => {
        expect(res).to.be.true
        done()
      })
    }
    it('somethinng', function (done) {
      doSomething(done)
    })

But I don’t want to necessarily say something is actually done. What's the proper way to test two async functions in one mocha/chai test