<!doctype html>
<!-- this tests the spec as it hopefully will be once bug https://www.w3.org/Bugs/Public/show_bug.cgi?id=17155 is fixed -->
<title>Fragment Navigation: Updating document address twice</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
test(function() {
  assert_equals(location.hash, "", "Page must be loaded with no hash")
  var original_location = location.href;
  location.hash = "test";
  assert_equals(location.hash, "#test");
  assert_equals(location.href, original_location + "#test");

  location.hash = "test1";
  assert_equals(location.hash, "#test1");
  assert_equals(location.href, original_location + "#test1");

  location.hash = "";
});
</script>