Make ActionDispatch url_for use HWIA symbolize_keys

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

actionpack/lib/action_dispatch/routing/url_for.rb

@@ -128,7 +128,7 @@ def url_for(options = nil)
         when String
           options
         when nil, Hash
-          _router.url_for(url_options.merge(options || {}).symbolize_keys)
+          _router.url_for(url_options.merge((options || {}).symbolize_keys))
         else
           polymorphic_url(options)
         end

actionpack/test/controller/url_for_test.rb

@@ -258,13 +258,17 @@ def test_multiple_includes_maintain_distinct_options
       end
 
       def test_with_stringified_keys
-        assert_equal("/c/a", W.new.url_for('controller' => 'c', 'action' => 'a', 'only_path' => true))
         assert_equal("/c", W.new.url_for('controller' => 'c', 'only_path' => true))
+        assert_equal("/c/a", W.new.url_for('controller' => 'c', 'action' => 'a', 'only_path' => true))
       end
 
       def test_with_hash_with_indifferent_access
-        assert_equal("/c/a", W.new.url_for(HashWithIndifferentAccess.new('controller' => 'c', 'action' => 'a', 'only_path' => true)))
+        W.default_url_options[:controller] = 'd'
+        W.default_url_options[:only_path]  = false
         assert_equal("/c", W.new.url_for(HashWithIndifferentAccess.new('controller' => 'c', 'only_path' => true)))
+
+        W.default_url_options[:action] = 'b'
+        assert_equal("/c/a", W.new.url_for(HashWithIndifferentAccess.new('controller' => 'c', 'action' => 'a', 'only_path' => true)))
       end
 
       private
@@ -273,4 +277,4 @@ def extract_params(url)
         end
     end
   end
-end
+end
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