.hasAttributeNS("", "align"))
  assert_true(!el.hasAttribute("align"))
}, "toggleAttribute should lowercase its name argument (upper case attribute)")
test(function() {
  var el = document.createElement("div")
  assert_true(el.toggleAttribute("CHEEseCaKe"))
  assert_true(!el.hasAttributeNS("", "CHEEseCaKe"))
  assert_true(el.hasAttributeNS("", "cheesecake"))
  assert_true(el.hasAttribute("cheesecake"))
}, "toggleAttribute should lowercase its name argument (mixed case attribute)")

// Step 3
test(function()