fixed regression caused by throwing in Fastnode

Author: yanhick

cocktail/core/ds/FastNode.hx

@@ -126,10 +126,6 @@ class FastNode<NodeClass:IFastNode<NodeClass>> implements IFastNode<NodeClass>
 
 	public function insertBefore(newChild:NodeClass, refChild:NodeClass):Void
 	{
-		if (refChild.parentNode != cast(this))
-		{
-			throw 'not a child node';
-		}
 
 		if (firstChild == null || refChild == null)
 		{

test/core/ds/FastNodeTest.hx

@@ -22,13 +22,6 @@ class FastNodeTest extends BuddySuite {
                     childNode.parentNode.should.be(null);
                     parentNode.firstChild.should.be(null);
                 });
-                it('should throw if not a child', function () {
-                    var parentNode = new TestNode();
-                    var anotherNode = new TestNode();
-
-                    parentNode.removeChild.bind(anotherNode)
-                    .should.throwValue('not a child node');
-                });
             });
 
             describe('#appendChild', function () {
@@ -61,15 +54,6 @@ class FastNodeTest extends BuddySuite {
                     firstChildNode.nextSibling.should.be(null);
                     firstChildNode.previousSibling.should.be(childNode);
                 });
-
-                it('should throw if ref node is not a child', function () {
-                    var parentNode = new TestNode();
-                    var childNode = new TestNode();
-                    var anotherNode = new TestNode();
-
-                    parentNode.insertBefore.bind(childNode, anotherNode)
-                    .should.throwValue('not a child node');
-                });
             });
         });
     }