'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 (parser, ip, args) {

        describe('using ' + parser + ' and ' + 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 keys_values = [];

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

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

                client.keys('multibulk:*', function (err, results) {
                    assert.deepEqual(keys_values.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);
            });
        });
    });
});