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

'use strict';

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

describe("The 'hmget' method", function () {

    helper.allTests(function (parser, ip, args) {

        describe('using ' + parser + ' and ' + ip, function () {
            var client;
            var hash = 'test hash';

            beforeEach(function (done) {
                client = redis.createClient.apply(null, args);
                client.once('error', done);
                client.once('ready', function () {
                    client.flushdb();
                    client.HMSET(hash, {'0123456789': 'abcdefghij', 'some manner of key': 'a type of value'}, helper.isString('OK', done));
                });
            });

            it('allows keys to be specified using multiple arguments', function (done) {
                client.hmget(hash, '0123456789', 'some manner of key', function (err, reply) {
                    assert.strictEqual('abcdefghij', reply[0].toString());
                    assert.strictEqual('a type of value', reply[1].toString());
                    return done(err);
                });
            });

            it('allows keys to be specified by passing an array without manipulating the array', function (done) {
                var data = ['0123456789', 'some manner of key'];
                client.HMGET(hash, data, function (err, reply) {
                    assert.strictEqual(data.length, 2);
                    assert.strictEqual('abcdefghij', reply[0].toString());
                    assert.strictEqual('a type of value', reply[1].toString());
                    return done(err);
                });
            });

            it('allows keys to be specified by passing an array as first argument', function (done) {
                client.HMGET([hash, '0123456789', 'some manner of key'], function (err, reply) {
                    assert.strictEqual('abcdefghij', reply[0].toString());
                    assert.strictEqual('a type of value', reply[1].toString());
                    return done(err);
                });
            });

            it('allows a single key to be specified in an array', function (done) {
                client.HMGET(hash, ['0123456789'], function (err, reply) {
                    assert.strictEqual('abcdefghij', reply[0].toString());
                    return done(err);
                });
            });

            it('allows keys to be specified that have not yet been set', function (done) {
                client.HMGET(hash, 'missing thing', 'another missing thing', function (err, reply) {
                    assert.strictEqual(null, reply[0]);
                    assert.strictEqual(null, reply[1]);
                    return done(err);
                });
            });

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