customDelimiter.js

var simpleEvents = require('nodeunit').testCase;

var file = '../../lib/eventemitter2';

module.exports = simpleEvents({

  setUp: function (callback) {
    var EventEmitter2;

    if(typeof require !== 'undefined') {
      EventEmitter2 = require(file).EventEmitter2;
    }
    else {
      EventEmitter2 = window.EventEmitter2;
    }

    this.emitter = new EventEmitter2({ 
      wildcard: true,
      delimiter: '::'
    });
    callback();
  },

  tearDown: function (callback) {
    //clean up?
    callback();
  },

  '1. Add a single listener on a single event.': function (test) {
    
    var emitter = this.emitter;
    var type = 'some::listener::bar';
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    test.equal(emitter.listeners(type).length, 1, 'There are three emitters');
    
    test.expect(1);
    test.done();

  },

  '2. Add two listeners on a single event.': function (test) {
    
    var emitter = this.emitter;
    var type = 'some::listener::bar';
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    test.equal(emitter.listeners(type).length, 2, 'There are three emitters');
    
    test.expect(1);
    test.done();

  },
  '3. Add three listeners on a single event.': function (test) {
    
    var emitter = this.emitter;
    var type = 'some::listener::bar';
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    test.equal(emitter.listeners(type).length, 3, 'There are three emitters');
    
    test.expect(1);
    test.done();

  },
  '4. Add two listeners to two different events.': function (test) {

    var emitter = this.emitter;
    var type = 'some::listener::bar';
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on('test2', function () {
      test.ok(true, 'The event was raised');
    });
    
    emitter.on('test2', function () {
      test.ok(true, 'The event was raised');
    });
    
    test.equal(emitter.listeners(type).length, 2, 'There are two emitters');
    test.equal(emitter.listeners('test2').length, 2, 'There are two emitters');
    
    test.expect(2);
    test.done();
  },

  '5. Never adding any listeners should yield a listeners array with the length of 0.': function (test) {
    var emitter = this.emitter;
    var type = 'some::listener::bar';
    
    emitter.on(type, function () {
      test.ok(true, 'The event was raised');
    });
    
    test.equal(emitter.listeners('test2').length, 0, 'There are no emitters');
    
    test.expect(1);
    test.done();
  },

  '6. the listener added should be the right listener.': function (test) {
    var emitter = this.emitter;
    var type = 'some::listener::bar';
    var f = function () {};
    
    emitter.on(type, f);
    test.equal(emitter.listeners(type).length, 1, 'There are is one emitters');
    test.equal(emitter.listeners(type)[0], f, 'The function should be f');
    
    test.expect(2);
    test.done();

  },
  
  '7. Listeners on *, *::*, *::test with emissions from foo::test and other::emit': function (test) {
    var emitter = this.emitter;
    var f = function () {
      test.ok(true, 'the event was fired')
    };

    emitter.on('*::test', f);
    emitter.on('*::*', f);
    emitter.on('*', f);

    emitter.emit('other::emit');    
    emitter.emit('foo::test');
    
    test.expect(3);
    test.done();
  },
  
  '8. Listeners on *, *::*, foo.test with emissions from *, *::* and foo.test': function (test) {
    var emitter = this.emitter;
    var f = function () {
      test.ok(true, 'the event was fired')
    };

    emitter.on('foo::test', f);
    emitter.on('*::*', f);
    emitter.on('*', f);

    emitter.emit('*::*');    
    emitter.emit('foo::test');
    emitter.emit('*')
    
    test.expect(5);
    test.done();
  },
  
  '9. Listeners on **, **::*, **::test with emissions from foo::test and other::emit': function (test) {
    var emitter = this.emitter;
    var f = function () {
      test.ok(true, 'the event was fired');
    };

    emitter.on('**::test', f);
    emitter.on('**::*', f);
    emitter.on('**', f);

    emitter.emit('other::emit'); // 2
    emitter.emit('foo::test');   // 3
    
    test.expect(5);
    test.done();
  },
  
  '10. Listeners on **, **::*, foo.test with emissions from **, **::* and foo.test': function (test) {
    var emitter = this.emitter, i = 0;
    var f = function (n) {
      return function() {
        //console.log(n, this.event);
        test.ok(true, 'the event was fired');
      };
    };

    emitter.on('foo::test', f(i++));
    emitter.on('**::*', f(i++));
    emitter.on('**', f(i++));

    emitter.emit('**::*'); // 3   
    emitter.emit('foo::test'); // 3
    emitter.emit('**'); // 3
    
    test.expect(9);
    test.done();
  }

});