redis-mediator

Message layer using redis

var RedisMediator = require('redis-mediator');

var assert = require("assert");

var EventEmitter = require('events').EventEmitter;
var emitter = new EventEmitter();
var isReady = false,
    mediatorCount = 0,
    mediatorWaiting = 2;

// Wait for mediators to be ready before starting test
emitter.once('ready', function() {
    isReady = true;
});

var mediator1 = new RedisMediator();
mediator1.once('ready', function() {
    if (++mediatorCount === mediatorWaiting) {
        emitter.emit('ready');
    }
});

var mediator2 = new RedisMediator();
mediator2.once('ready', function() {
    if (++mediatorCount === mediatorWaiting) {
        emitter.emit('ready');
    }
});

describe('Emit', function() {
    it('should emit and recieve 1', function(done) {
        var count = 0,
            waiting = 2;

        this.timeout = 3000;

        mediator1.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            if (++count === waiting) {
                done();
            }
        });

        mediator2.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            if (++count === waiting) {
                done();
            }
        });

        // Wait for mediators to be ready before starting test
        if (isReady) {
            mediator1.emit('event', 'arg');
        } else {
            emitter.once('ready', function() {
                mediator1.emit('event', 'arg');
            });
        }
    });

    it('should emit and recieve 2', function(done) {
        var count = 0,
            waiting = 2;
        mediator1.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            if (++count === waiting) {
                done();
            }
        });
        mediator2.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            if (++count === waiting) {
                done();
            }
        });
        mediator2.emit('event', 'arg');
    });
});

describe('Broadcast', function() {
    it('should broadcast 1', function(done) {
        var count = 0,
            waiting = 2;
        mediator1.once('event', listener);
        mediator2.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            setTimeout(function() {
                mediator1.removeListener('event', listener);
                done();
            }, 30);
        });
        mediator1.broadcast('event', 'arg');

        function listener(arg) {
            done(new Error('should not recieve'));
        }
    });

    it('should broadcast 2', function(done) {
        var count = 0,
            waiting = 2;
        mediator1.once('event', function(arg) {
            assert.strictEqual(arg, 'arg');
            setTimeout(function() {
                mediator2.removeListener('event', listener);
                done();
            }, 30);
        });
        mediator2.once('event', listener);
        mediator2.broadcast('event', 'arg');

        function listener(arg) {
            done(new Error('should not recieve'));
        }
    });
});

describe('Acknowledge', function() {
    it('should acknowledge emit', function(done) {
        mediator1.once('event with ack', function(arg, fn) {
            if (arg === 'arg') {
                fn('acknowledge');
            }
        });
        mediator2.emit('event with ack', 'arg', function(arg) {
            assert.strictEqual(arg, 'acknowledge');
            done();
        });
    });

    it('should acknowledge broadcast', function(done) {
        mediator1.once('event with ack', function(arg, fn) {
            if (arg === 'arg') {
                fn('acknowledge');
            }
        });
        mediator2.broadcast('event with ack', 'arg', function(arg) {
            assert.strictEqual(arg, 'acknowledge');
            done();
        });
    });
});

License

The MIT License (MIT)

Copyright (c) 2014-2015 Stéphane MBAPE (http://smbape.com)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.