diff --git a/actionpack/lib/action_controller/assertions/dom_assertions.rb b/actionpack/lib/action_controller/assertions/dom_assertions.rb
index 355080fe54..0b8c78d9b3 100644
--- a/actionpack/lib/action_controller/assertions/dom_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/dom_assertions.rb
@@ -2,21 +2,23 @@ module ActionController
   module Assertions
     module DomAssertions
       # Test two HTML strings for equivalency (e.g., identical up to reordering of attributes)
-      def assert_dom_equal(expected, actual, message="")
+      def assert_dom_equal(expected, actual, message = "")
         clean_backtrace do
           expected_dom = HTML::Document.new(expected).root
-          actual_dom = HTML::Document.new(actual).root
+          actual_dom   = HTML::Document.new(actual).root
           full_message = build_message(message, "<?> expected to be == to\n<?>.", expected_dom.to_s, actual_dom.to_s)
+
           assert_block(full_message) { expected_dom == actual_dom }
         end
       end
       
       # The negated form of +assert_dom_equivalent+.
-      def assert_dom_not_equal(expected, actual, message="")
+      def assert_dom_not_equal(expected, actual, message = "")
         clean_backtrace do
           expected_dom = HTML::Document.new(expected).root
           actual_dom   = HTML::Document.new(actual).root
           full_message = build_message(message, "<?> expected to be != to\n<?>.", expected_dom.to_s, actual_dom.to_s)
+
           assert_block(full_message) { expected_dom != actual_dom }
         end
       end
diff --git a/actionpack/lib/action_controller/assertions/response_assertions.rb b/actionpack/lib/action_controller/assertions/response_assertions.rb
index de7efd0ac9..f45727f508 100644
--- a/actionpack/lib/action_controller/assertions/response_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/response_assertions.rb
@@ -138,4 +138,4 @@ module ActionController
         end
     end
   end
-end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/assertions/selector_assertions.rb b/actionpack/lib/action_controller/assertions/selector_assertions.rb
index 05ca2bff15..7e9692be3f 100644
--- a/actionpack/lib/action_controller/assertions/selector_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/selector_assertions.rb
@@ -66,6 +66,7 @@ module ActionController
           raise ArgumentError, "First argument is either selector or element to select, but nil found. Perhaps you called assert_select with an element that does not exist?"
         elsif @selected
           matches = []
+
           @selected.each do |selected|
             subset = css_select(selected, HTML::Selector.new(arg.dup, args.dup))
             subset.each do |match|
@@ -387,6 +388,7 @@ module ActionController
         # any RJS statement.
         if arg.is_a?(Symbol)
           rjs_type = arg
+
           if rjs_type == :insert
             arg = args.shift
             insertion = "insert_#{arg}".to_sym
@@ -433,6 +435,7 @@ module ActionController
               ""
             end
         end
+
         if matches
           if block_given? && !([:remove, :show, :hide, :toggle].include? rjs_type)
             begin
@@ -563,9 +566,11 @@ module ActionController
         # page, or from all the RJS statements, depending on the type of response.
         def response_from_page_or_rjs()
           content_type = @response.content_type
+
           if content_type && content_type =~ /text\/javascript/
             body = @response.body.dup
             root = HTML::Node.new(nil)
+
             while true
               next if body.sub!(RJS_PATTERN_EVERYTHING) do |match|
                 html = unescape_rjs($3)
@@ -575,6 +580,7 @@ module ActionController
               end
               break
             end
+
             root
           else
             html_document.root
@@ -592,7 +598,6 @@ module ActionController
           unescaped.gsub!(RJS_PATTERN_UNICODE_ESCAPED_CHAR) {|u| [$1.hex].pack('U*')}
           unescaped
         end
-
     end
   end
-end
+end
\ No newline at end of file
diff --git a/actionpack/lib/action_controller/assertions/tag_assertions.rb b/actionpack/lib/action_controller/assertions/tag_assertions.rb
index df8e812b3c..d911d81174 100644
--- a/actionpack/lib/action_controller/assertions/tag_assertions.rb
+++ b/actionpack/lib/action_controller/assertions/tag_assertions.rb
@@ -114,4 +114,4 @@ module ActionController
       end
     end
   end
-end
+end
\ No newline at end of file