<!doctype html>
<meta charset=utf-8>
<title>HTMLOptionElement.selected</title>
<link rel=author title="Corey Farwell" href="mailto:coreyf@rwell.org">
<link rel=help href="https://html.spec.whatwg.org/multipage/#dom-option-selected">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>

<script>
test(function () {
  var elem = document.createElement("option");
  assert_equals(elem.selected, false);

  elem.setAttribute("selected", "");
  assert_equals(elem.selected, true);

  elem.removeAttribute("selected");
  assert_equals(elem.selected, false);

  elem.defaultSelected = true
  assert_equals(elem.selected, true);

  elem.defaultSelected = false;
  assert_equals(elem.selected, false);
}, "not dirty");

test(function () {
  testDirty(true);
}, "dirty, selected");

test(function () {
  testDirty(false);
}, "dirty, not selected");

function testDirty(isSelected) {
  var elem = document.createElement("option");

  elem.selected = isSelected;  // After this assignment, dirtiness=true
  assertDirty(elem, isSelected);

  elem.selected = !isSelected;  // Change the value, still dirty
  assertDirty(elem, !isSelected);
};

function assertDirty(elem, expect) {
  assert_equals(elem.selected, expect);

  elem.setAttribute("selected", "");
  assert_equals(elem.selected, expect);

  elem.removeAttribute("selected");
  assert_equals(elem.selected, expect);

  elem.defaultSelected = true;
  assert_equals(elem.selected, expect);

  elem.defaultSelected = false;
  assert_equals(elem.selected, expect);
}
</script>