selectlist-pseudo-open-closed.tentative.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/forms/the-selectlist-element/selectlist-pseudo-open-closed.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel=author href="mailto:jarhar@chromium.org">

<link rel=help href="https://github.com/openui/open-ui/issues/547">

<link rel=help href="https://drafts.csswg.org/selectors/#open-state">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<selectlist id=myselectlist>

  <button type=selectlist id=custombutton>button</button>

  <option>one</option>

  <option>two</option>

</selectlist>

<script>

test(() => {

  assert_false(myselectlist.matches(':open'),

    'Selectlist should not match :open while it is closed.');

  assert_true(myselectlist.matches(':closed'),

    'Selectlist should match :closed while it is closed.');

  custombutton.click();

  assert_true(myselectlist.matches(':open'),

    'Selectlist should match :open while it is open.');

  assert_false(myselectlist.matches(':closed'),

    'Selectlist should not match :closed while it is open.');

}, 'Selectlist should support :open and :closed pseudo selectors.');

</script>

<selectlist id=selectlistinvalidation>

  <button type=selectlist>button</button>

  <option>one</option>

  <option>two</option>

</selectlist>

<style>

selectlist:closed {

  background-color: red;

selectlist:open {

  background-color: green;

</style>

<script>

test(() => {

  const selectlist = document.getElementById('selectlistinvalidation');

  const button = selectlist.querySelector('button');

  const option = selectlist.querySelector('option');

  assert_equals(getComputedStyle(selectlist).backgroundColor, 'rgb(255, 0, 0)',

    'The style rules from :closed should apply when the selectlist is closed.');

  button.click();

  assert_equals(getComputedStyle(selectlist).backgroundColor, 'rgb(0, 128, 0)',

    'The style rules from :open should apply when the selectlist is open.');

  option.click();

  assert_equals(getComputedStyle(selectlist).backgroundColor, 'rgb(255, 0, 0)',

    'The style rules from :closed should apply when the selectlist is opened and closed again.');

}, 'Selectlist :open and :closed should invalidate correctly.');

</script>