Ruby 1.9 compat: force assert_select text encoding to the encoding of the...

Ruby 1.9 compat: force assert_select text encoding to the encoding of the regexp it's matching against.

actionpack/lib/action_controller/assertions/selector_assertions.rb

@@ -263,12 +263,15 @@ def assert_select(*args, &block)
         if match_with = equals[:text]
           matches.delete_if do |match|
             text = ""
+            text.force_encoding(match_with.encoding) if text.respond_to?(:force_encoding)
             stack = match.children.reverse
             while node = stack.pop
               if node.tag?
                 stack.concat node.children.reverse
               else
-                text << node.content
+                content = node.content
+                content.force_encoding(match_with.encoding) if content.respond_to?(:force_encoding)
+                text << content
               end
             end
             text.strip! unless NO_STRIP.include?(match.name)

actionpack/test/controller/assert_select_test.rb

@@ -345,10 +345,17 @@ def test_assert_select_rjs_with_unicode
       page.replace "test", "<div id=\"1\">\343\203\201\343\202\261\343\203\203\343\203\210</div>"
     end
     assert_select_rjs do
-      assert_select "#1", :text => "\343\203\201\343\202\261\343\203\203\343\203\210"
-      assert_select "#1", "\343\203\201\343\202\261\343\203\203\343\203\210"
-      assert_select "#1", Regexp.new("\343\203\201..\343\203\210",0,'U')
-      assert_raises(AssertionFailedError) { assert_select "#1", Regexp.new("\343\203\201.\343\203\210",0,'U') }
+      str = "#1"
+      assert_select str, :text => "\343\203\201\343\202\261\343\203\203\343\203\210"
+      assert_select str, "\343\203\201\343\202\261\343\203\203\343\203\210"
+      if str.respond_to?(:force_encoding)
+        str.force_encoding(Encoding::UTF_8)
+        assert_select str, /\343\203\201..\343\203\210/u
+        assert_raises(AssertionFailedError) { assert_select str, /\343\203\201.\343\203\210/u }
+      else
+        assert_select str, Regexp.new("\343\203\201..\343\203\210",0,'U')
+        assert_raises(AssertionFailedError) { assert_select str, Regexp.new("\343\203\201.\343\203\210",0,'U') }
+      end
     end
   end