obj_lifecycle.spec.js

import Obj from '../Obj.vue'

describe('Obj', () => {
  describe('Lifecycle', () => {
    it('created', done => {
      const context = {
        getInitialConfig: () => {}
      }

      const getInitialConfigSpy = sinon.spy(context, 'getInitialConfigSpy')
      Obj.created.call(context)

      expect(getInitialConfigSpy).to.be.calledOnce

      getInitialConfigSpy.restore()
      done()
    })
  })
})