mjackson/then-redis

import expect from 'expect'
import db from './db'

describe('sdiff', () => {
  beforeEach(() =>
    Promise.all([
      db.sadd('set-one', 1, 2, 3, 4),
      db.sadd('set-two', 3, 4, 5, 6),
      db.sadd('set-three', 6, 7, 8)
    ])
  )

  it('returns the members of the set resulting from the difference between the first set and all successive sets', () =>
    db.sdiff('set-one', 'set-two', 'set-three').then((diff) => {
      expect(diff.sort()).toEqual([ '1', '2' ])
    })
  )
})