Test query resolve function

resolver.test.js

import { expect } from 'chai'
import rootSchema from '../../src/schemas/rootSchema'

describe('Test resolvers', () => {
  it('has correct getCharacters query', (done) => {
    const charactersQuery = rootSchema.getTypeMap().Query.getFields().getCharacters
    const expected = [
      { id: '1', name: 'John Snow', gender: { name: 'Male' }}
    ]

    charactersQuery.resolve().then(res => {
      expect(res).to.deep.equals(expected)
      done()
    }).catch(err => {
      done(err)
    })
  })
})