Adds publish/subscribe channels. Unit tests added.

test/unit/channel.js

@@ -0,0 +1,56 @@
+module("channel", { teardown: moduleTeardown });
+
+test( "jQuery.Channel - Anonymous Channel", function() {
+
+	expect( 4 );
+
+	var channel = jQuery.Channel(),
+		count = 0;
+
+	function firstCallback( value ) {
+		strictEqual( count, 1, "Callback called when needed" );
+		strictEqual( value, "test", "Published value received" );
+	}
+
+	count++;
+	channel.subscribe( firstCallback );
+	channel.publish( "test" );
+	channel.unsubscribe( firstCallback );
+	count++;
+	channel.subscribe(function( value ) {
+		strictEqual( count, 2, "Callback called when needed" );
+		strictEqual( value, "test", "Published value received" );
+	});
+	channel.publish( "test" );
+
+});
+
+test( "jQuery.Channel - Named Channel", function() {
+
+	expect( 2 );
+
+	function callback( value ) {
+		ok( true, "Callback called" );
+		strictEqual( value, "test", "Proper value received" );
+	}
+
+	jQuery.Channel( "test" ).subscribe( callback );
+	jQuery.Channel( "test" ).publish( "test" );
+	jQuery.Channel( "test" ).unsubscribe( callback );
+	jQuery.Channel( "test" ).publish( "test" );
+});
+
+test( "jQuery.Channel - Helpers", function() {
+
+	expect( 2 );
+
+	function callback( value ) {
+		ok( true, "Callback called" );
+		strictEqual( value, "test", "Proper value received" );
+	}
+
+	jQuery.subscribe( "test", callback );
+	jQuery.publish( "test" , "test" );
+	jQuery.unsubscribe( "test", callback );
+	jQuery.publish( "test" , "test" );
+});