Spec for firebase-faker test helper

firebase-faker.spec.js

import { expect } from 'chai'
import { setupDatabase, destroyDatabase } from './firebase-faker'

describe('Firebase fake server', () => {
  let server, data, client
  beforeEach(() => {
    const port = 45001
    data = {
      states: {
        CA: 'California',
        AL: 'Alabama',
        KY: 'Kentucky'
      }
    };
    ({ server, client } = setupDatabase(port, data))
  })

  afterEach(() => {
    destroyDatabase(server, client)
  })

  describe('supports .once value', () => {
    it('gives data', async done => {
      const snap = await client.ref('states/CA').once('value')
      expect(snap.val()).to.eq('California')
      done()
    })

    it('gives all data', async done => {
      const snap = await client.ref().once('value')
      expect(snap.val()).to.eql(data)
      done()
    })
  })

  describe('supports .set', () => {
    it('write input into node', async done => {
      await client.ref().set('input')
      const newData = await server.getValue()
      expect(newData).to.eq('input')
      done()
    })
  })
})