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

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

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

    function allTests(parser, ip) {
        var args = config.configureClient(parser, ip);

        describe("using " + parser + " and " + ip, function () {
            var client;
            var bclient;

            beforeEach(function (done) {
                client = redis.createClient.apply(redis.createClient, args);
                client.once("error", done);
                client.once("connect", function () {
                    client.flushdb(done);
                });
            });

            it('pops value immediately if list contains values', function (done) {
                bclient = redis.createClient.apply(redis.createClient, args);
                client.rpush("blocking list", "initial value", helper.isNumber(1));
                bclient.blpop("blocking list", 0, function (err, value) {
                    assert.strictEqual(value[0], "blocking list");
                    assert.strictEqual(value[1], "initial value");
                    return done(err);
                });
            });

            it('waits for value if list is not yet populated', function (done) {
                bclient = redis.createClient.apply(redis.createClient, args);
                bclient.blpop("blocking list 2", 5, function (err, value) {
                    assert.strictEqual(value[0], "blocking list 2");
                    assert.strictEqual(value[1], "initial value");
                    return done(err);
                });
                client.rpush("blocking list 2", "initial value", helper.isNumber(1));
            });

            it('times out after specified time', function (done) {
                bclient = redis.createClient.apply(redis.createClient, args);
                bclient.BLPOP("blocking list", 1, function (err, res) {
                    assert.strictEqual(res, null);
                    return done(err);
                });
            });

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

    ['javascript', 'hiredis'].forEach(function (parser) {
        allTests(parser, "/tmp/redis.sock");
        ['IPv4', 'IPv6'].forEach(function (ip) {
            allTests(parser, ip);
        })
    });
});