Use assert_select to check the download link. (#4204)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3558 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/issues_controller_test.rb

@@ -375,7 +375,7 @@ class IssuesControllerTest < ActionController::TestCase
     assert_response :success
     assert_template 'changes.rxml'
     # Inline image
-    assert @response.body.include?("&lt;img src=\"http://test.host/attachments/download/10\" alt=\"\" /&gt;"), "Body did not match. Body: #{@response.body}"
+    assert_select 'content', :text => Regexp.new(Regexp.quote('http://test.host/attachments/download/10'))
   end
   
   def test_show_export_to_pdf