Make name="" and id="" play nicely together.

Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>

tests/HTMLPurifier/AttrTransform/NameSyncTest.php

@@ -0,0 +1,40 @@
+<?php
+
+class HTMLPurifier_AttrTransform_NameSyncTest extends HTMLPurifier_AttrTransformHarness
+{
+
+    function setUp() {
+        parent::setUp();
+        $this->obj = new HTMLPurifier_AttrTransform_NameSync();
+        $this->accumulator = new HTMLPurifier_IDAccumulator();
+        $this->context->register('IDAccumulator', $this->accumulator);
+        $this->config->set('Attr', 'EnableID', true);
+    }
+
+    function testEmpty() {
+        $this->assertResult( array() );
+    }
+
+    function testAllowSame() {
+        $this->assertResult(
+            array('name' => 'free', 'id' => 'free')
+        );
+    }
+
+    function testAllowDifferent() {
+        $this->assertResult(
+            array('name' => 'tryit', 'id' => 'thisgood')
+        );
+    }
+
+    function testCheckName() {
+        $this->accumulator->add('notok');
+        $this->assertResult(
+            array('name' => 'notok', 'id' => 'ok'),
+            array('id' => 'ok')
+        );
+    }
+
+}
+
+// vim: et sw=4 sts=4