chromium/third_party/blink/web_tests/external/wpt/html/semantics/document-metadata/the-base-element/base_href_invalid.html

<!doctype html>
<meta charset=utf-8>
<title>base element with unparseable href should have .href getter return attr value</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
test(function() {
  var b = document.createElement("base");
  b.setAttribute("href", "//test:test");
  assert_equals(b.href, "//test:test");
});
</script>