message: test: add test for ignoredElements
diff: @@ -44,4 +44,15 @@ describe('Global config', () => {
  expect(test.$options.__test__).toBe(3)
  })
  })
  +
  + describe('ignoredElements', () => {
  + it('should work', () => {
  + Vue.config.ignoredElements = ['foo', /^ion-/]
  + new Vue({
  + template: `<div><foo/><ion-foo/><ion-bar/></div>`
  + }).$mount()
  + expect('Unknown custom element').not.toHaveBeenWarned()
  + Vue.config.ignoredElements = []
  + })
  + })
  })
  