Ensure assert_select works with XML namespaced attributes [#1547 state:resolved] [Jon Yurek]

actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb

@@ -556,7 +556,7 @@ def simple_selector(statement, values, can_negate = true)
         end
 
         # Attribute value.
-        next if statement.sub!(/^\[\s*([[:alpha:]][\w\-]*)\s*((?:[~|^$*])?=)?\s*('[^']*'|"[^*]"|[^\]]*)\s*\]/) do |match|
+        next if statement.sub!(/^\[\s*([[:alpha:]][\w\-:]*)\s*((?:[~|^$*])?=)?\s*('[^']*'|"[^*]"|[^\]]*)\s*\]/) do |match|
           name, equality, value = $1, $2, $3
           if value == "?"
             value = values.shift

actionpack/test/controller/assert_select_test.rb

@@ -256,6 +256,11 @@ def test_assert_select_rjs_for_positioned_insert_should_fail_when_mixing_argumen
     assert_raises(Assertion) {assert_select_rjs :insert, :top, "test2"}
   end
 
+  def test_elect_with_xml_namespace_attributes
+    render_html %Q{<link xlink:href="http://nowhere.com"></link>}
+    assert_nothing_raised { assert_select "link[xlink:href=http://nowhere.com]" }
+  end
+
   #
   # Test css_select.
   #