@instructure/quiz-interactions/src/util/__tests__/focusHelpers.test.js

A React UI component Library for quiz interaction types.

import {getNextItemIdFromArray} from '../focusHelpers'

describe('focusHelpers', () => {
  describe('getNextItemIdFromArray', () => {
    it('returns the previous item if it exists', () => {
      const uuids = ['one', 'two', 'three', 'four']
      const nextId = getNextItemIdFromArray('two', uuids)
      expect(nextId).toBe('one')
    })

    it('returns the next item if no previous', () => {
      const uuids = ['one', 'two', 'three', 'four']
      const nextId = getNextItemIdFromArray('one', uuids)
      expect(nextId).toBe('two')
    })

    it('can handle objects', () => {
      const uuids = [{id: 'one'}, {id: 'two'}, {id: 'three'}, {id: 'four'}]
      const nextId = getNextItemIdFromArray('one', uuids)
      expect(nextId).toBe('two')
    })
  })
})