From 0d41693bfcb86522278d19a650614ec2ba37850c Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Thu, 21 Aug 2014 21:05:06 +0200
Subject: [PATCH] Support for using name() with attributes.

---
 lib/oga/xpath/evaluator.rb                  | 2 +-
 spec/oga/xpath/evaluator/calls/name_spec.rb | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/oga/xpath/evaluator.rb b/lib/oga/xpath/evaluator.rb
index d609662..5a3a8e5 100644
--- a/lib/oga/xpath/evaluator.rb
+++ b/lib/oga/xpath/evaluator.rb
@@ -725,7 +725,7 @@ module Oga
       def on_call_name(context, expression = nil)
         node = function_node(context, expression)
 
-        if node.is_a?(XML::Element)
+        if node.respond_to?(:name) and node.respond_to?(:namespace)
           if node.namespace
             return "#{node.namespace.name}:#{node.name}"
           else
diff --git a/spec/oga/xpath/evaluator/calls/name_spec.rb b/spec/oga/xpath/evaluator/calls/name_spec.rb
index 46151c3..6a8bfb4 100644
--- a/spec/oga/xpath/evaluator/calls/name_spec.rb
+++ b/spec/oga/xpath/evaluator/calls/name_spec.rb
@@ -3,7 +3,7 @@ require 'spec_helper'
 describe Oga::XPath::Evaluator do
   context 'name() function' do
     before do
-      @document  = parse('<root xmlns:x="y"><x:a></x:a><b></b></root>')
+      @document  = parse('<root xmlns:x="y"><x:a></x:a><b x:num="10"></b></root>')
       @evaluator = described_class.new(@document)
     end
 
@@ -16,6 +16,10 @@ describe Oga::XPath::Evaluator do
         @evaluator.evaluate('name(root/b)').should == 'b'
       end
 
+      example 'return the local name for the "num" attribute' do
+        @evaluator.evaluate('name(root/b/@x:num)').should == 'x:num'
+      end
+
       example 'return only the name of the first node in the set' do
         @evaluator.evaluate('name(root/*)').should == 'x:a'
       end