app_vue2/tests/unit/use/form/useForm.spec.ts

import { createStore } from '~/tests/unit/Helpers'
import { form } from '~/tests/unit/fixture/state/profile'
import { $useForm, UseForm } from '~/use/form/useForm'
import { AnyStore } from '~/types/interfaces'

let store: AnyStore

beforeAll(() => {
  store = createStore()
  store.registerModule('form', form)
})

function setup(){
  return $useForm()
}

describe('markFormAsDirty()', () => {
  it('should call addEventListener one time', async () => {
    const spy = jest.spyOn(UseForm.prototype as any, 'addEventListener')
    spy.mockImplementation(() => {})

    const { markFormAsDirty } = setup()
    markFormAsDirty()
    expect(spy).toHaveBeenCalled()
  })
})

describe('markAsNotDirty()', () => {
  it('should call clearEventListener one time', async () => {
    const spy = jest.spyOn(UseForm.prototype as any, 'clearEventListener')
    spy.mockImplementation(() => {})

    const { markFormAsNotDirty } = $useForm()
    markFormAsNotDirty()
    expect(spy).toHaveBeenCalled()
  })
})