gistfile1.rb

def setup
  @compiled_templates = ActionView::Base::CompiledTemplates

  # first, if we are running the whole test suite with ReloadableTemplates
  # try to undef all the methods through ReloadableTemplate's interfaces
  unless ActionView::Base.cache_template_loading?
    ActionController::Base.view_paths.each do |view_path|
      view_path.paths.values.uniq!.each do |reloadable_template|
        reloadable_template.undef_my_compiled_methods!
      end
    end
  end

  # just purge anything that's left
  @compiled_templates.instance_methods.each do |m|
    @compiled_templates.send(:remove_method, m) if m =~ /^_run_/
  end
end