node-redis/test/commands/sinter.spec.js

'use strict'

var assert = require('assert')
var config = require('../lib/config')
var helper = require('../helper')
var redis = config.redis

describe('The \'sinter\' method', function () {
  helper.allTests(function (ip, args) {
    describe('using ' + ip, function () {
      var client

      beforeEach(function (done) {
        client = redis.createClient.apply(null, args)
        client.once('ready', function () {
          client.flushdb(done)
        })
      })

      it('handles two sets being intersected', function (done) {
        client.sadd('sa', 'a', helper.isNumber(1))
        client.sadd('sa', 'b', helper.isNumber(1))
        client.sadd('sa', 'c', helper.isNumber(1))

        client.sadd('sb', 'b', helper.isNumber(1))
        client.sadd('sb', 'c', helper.isNumber(1))
        client.sadd('sb', 'd', helper.isNumber(1))

        client.sinter('sa', 'sb', function (err, intersection) {
          assert.strictEqual(intersection.length, 2)
          assert.deepEqual(intersection.sort(), [ 'b', 'c' ])
          return done(err)
        })
      })

      it('handles three sets being intersected', function (done) {
        client.sadd('sa', 'a', helper.isNumber(1))
        client.sadd('sa', 'b', helper.isNumber(1))
        client.sadd('sa', 'c', helper.isNumber(1))

        client.sadd('sb', 'b', helper.isNumber(1))
        client.sadd('sb', 'c', helper.isNumber(1))
        client.sadd('sb', 'd', helper.isNumber(1))

        client.sadd('sc', 'c', helper.isNumber(1))
        client.sadd('sc', 'd', helper.isNumber(1))
        client.sadd('sc', 'e', helper.isNumber(1))

        client.sinter('sa', 'sb', 'sc', function (err, intersection) {
          assert.strictEqual(intersection.length, 1)
          assert.strictEqual(intersection[0], 'c')
          return done(err)
        })
      })

      afterEach(function () {
        client.end(true)
      })
    })
  })
})