gistfile1.rb

# in file helper_test.rb:

  def haml_tag_helper_method
    haml_buffer.options[:escape_html] = true
    haml_tag :div do
      haml_tag :span, 'foo'
    end
  end

  def test_haml_tag_with_block
    assert_equal("<div>\n  <span>foo</span>\n</div>\n", render("- haml_tag_helper_method", :scope_object => self))
  end