Initial implementation of URISchemeRegistry (fixed overload bug in process). Also, add extra notes to some of the unit tests.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@210 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/URISchemeRegistryTest.php

@@ -0,0 +1,20 @@
+<?php
+
+require_once 'HTMLPurifier/URISchemeRegistry.php';
+
+class HTMLPurifier_URISchemeRegistryTest extends UnitTestCase
+{
+    
+    function test() {
+        
+        $registry =& HTMLPurifier_URISchemeRegistry::instance();
+        $this->assertIsA($registry->getScheme('http'), 'HTMLPurifier_URIScheme_http');
+        
+        // to come: overloading and custom schemes, as well as changing the
+        // configuration values used by this class
+        
+    }
+    
+}
+
+?>