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<!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>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<select id=myselect>
<option>one</option>
<option>two</option>
</select>
<style>
select, ::picker(select) {
appearance: base-select;
}
</style>
<script>
promise_test(async () => {
assert_true(CSS.supports('appearance', 'base-select'),
'This test requires appearance:base-select in order to run.');
assert_false(myselect.matches(':open'),
'select should not match :open while it is closed.');
await test_driver.click(myselect);
assert_true(myselect.matches(':open'),
'select should match :open while it is open.');
}, 'select should support :open pseudo selector.');
</script>
<select id=selectinvalidation>
<option>one</option>
<option>two</option>
</select>
<style>
select:not(:open) {
background-color: red;
}
select:open {
background-color: green;
}
</style>
<script>
promise_test(async () => {
assert_true(CSS.supports('appearance', 'base-select'),
'This test requires appearance:base-select in order to run.');
const select = document.getElementById('selectinvalidation');
const option = select.querySelector('option');
assert_equals(getComputedStyle(select).backgroundColor, 'rgb(255, 0, 0)',
'The style rules from :not(:open) should apply when the select is closed.');
await test_driver.click(select);
assert_equals(getComputedStyle(select).backgroundColor, 'rgb(0, 128, 0)',
'The style rules from :open should apply when the select is open.');
await test_driver.click(select);
assert_equals(getComputedStyle(select).backgroundColor, 'rgb(255, 0, 0)',
'The style rules from :not(:open) should apply when the select is opened and closed again.');
}, 'select :open and :not(:open) should invalidate correctly.');
</script>
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