emitted

Return an object containing custom events emitted by the Wrapper vm.

• Returns: { [name: string]: Array<Array<any>> }

• Example:

import { mount } from '@vue/test-utils'

test('emit demo', async () => {
  const wrapper = mount(Component)

  wrapper.vm.$emit('foo')
  wrapper.vm.$emit('foo', 123)

  await wrapper.vm.$nextTick() // Wait until $emits have been handled

  /*
  wrapper.emitted() returns the following object:
  {
    foo: [[], [123]]
  }
  */

  // assert event has been emitted
  expect(wrapper.emitted().foo).toBeTruthy()

  // assert event count
  expect(wrapper.emitted().foo.length).toBe(2)

  // assert event payload
  expect(wrapper.emitted().foo[1]).toEqual([123])
})

You can also write the above as follows:

// assert event has been emitted
expect(wrapper.emitted('foo')).toBeTruthy()

// assert event count
expect(wrapper.emitted('foo').length).toBe(2)

// assert event payload
expect(wrapper.emitted('foo')[1]).toEqual([123])

The .emitted() method returns the same object every time it is called, not a new one, and so the object will update when new events are fired:

const emitted = wrapper.emitted()

expect(emitted.foo.length).toBe(1)

// do something to make `wrapper` emit the "foo" event

expect(emitted.foo.length).toBe(2)