gistfile1.builder

test "ruby: innerHTML=" do
  div = document.getElementsByTagName('//div').first
  div.inner_html = '<div><span>hi</span> there</div>'
  assert_equal "<div><span>hi</span> there</div>", div.innerHTML
end

# =>
#   1) Failure:
# test_ruby:_innerHTML=(ElementTest) [test/rdom/element_test.rb:35]:
# <"<div><span>hi</span> there</div>"> expected but was
# <"<div>\n<span>hi</span> there</div>">.