'use strict'

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

describe('The \'keys\' 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.flushall(done)
        })
      })

      it('returns matching keys', function (done) {
        client.mset(['test keys 1', 'test val 1', 'test keys 2', 'test val 2'], helper.isString('OK'))
        client.keys('test keys*', function (err, results) {
          assert.strictEqual(2, results.length)
          assert.ok(~results.indexOf('test keys 1'))
          assert.ok(~results.indexOf('test keys 2'))
          return done(err)
        })
      })

      it('handles a large packet size', function (done) {
        var keysValues = []

        for (var i = 0; i < 200; i++) {
          var keyValue = [
            'multibulk:' + crypto.randomBytes(256).toString('hex'), // use long strings as keys to ensure generation of large packet
            'test val ' + i
          ]
          keysValues.push(keyValue)
        }

        client.mset(keysValues.reduce(function (a, b) {
          return a.concat(b)
        }), helper.isString('OK'))

        client.keys('multibulk:*', function (err, results) {
          assert.deepEqual(keysValues.map(function (val) {
            return val[0]
          }).sort(), results.sort())
          return done(err)
        })
      })

      it('handles an empty response', function (done) {
        client.keys(['users:*'], function (err, results) {
          assert.strictEqual(results.length, 0)
          assert.ok(Array.isArray(results))
          return done(err)
        })
      })

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