'use strict';

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

describe("The 'sunion' 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.flushdb(done);
                });
            });

            it('returns the union of a group of sets', 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.sunion('sa', 'sb', 'sc', function (err, union) {
                    assert.deepEqual(union.sort(), ['a', 'b', 'c', 'd', 'e']);
                    return done(err);
                });
            });

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