text: /* eslint-env jasmine */
  import mixin from '../../../src/util/mixin'
  
  const behavior = {
    foo () {}
  }
  class Dummy {
    test () {}
  }
  
  let Mixin
  
  describe('mixin', () => {
    beforeEach(() => {
      // real use-case scenario
      Mixin = mixin(behavior)(class extends Dummy {})
    })
  
    it('should add behavior to target', () => {
      expect(Mixin.prototype.foo).toBeDefined()
      expect(Mixin.prototype.test).toBeDefined()
    })
  
    it('should not modify base class', () => {
      expect(Dummy.prototype.foo).not.toBeDefined()
      expect(Dummy.prototype.test).toBeDefined()
    })
  
    it('should inherit from class', () => {
      expect(Mixin.constructor).toBe(Dummy.constructor)
    })
  })
  