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<!doctype html>
<title>Evaluation of queries</title>
<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-rule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
#container {
width: 1px;
height: 0px;
container-type: size;
--applied:false;
}
</style>
<div id=container>
<div id=inner></div>
</div>
<script>
setup(() => assert_implements_container_queries());
function test_query(query, expected) {
test((t) => {
let style = document.createElement('style');
t.add_cleanup(() => { style.remove(); });
style.innerText = `@container ${query} { #inner { --applied:true; } }`;
let cs = getComputedStyle(inner);
assert_equals(cs.getPropertyValue('--applied'), 'false');
document.head.append(style);
assert_equals(cs.getPropertyValue('--applied'), expected.toString());
}, query);
};
// We don't care about specific features in this file, only higher level
// evaluation like "and", "or", and so forth. The features "width", "height"
// and "unknown" are arbitrarily chosen to represent true, false, and
// unknown values, respectively.
test_query('(width)', true);
test_query('(height)', false);
test_query('(unknown)', false);
test_query('unknown(width)', false);
// Nesting in <container-query>:
test_query('((width))', true);
test_query('((height))', false);
test_query('((unknown))', false);
test_query('((((width))))', true);
test_query('((((height))))', false);
test_query('((((unknown))))', false);
// "not" in <container-query>:
test_query('(not (width))', false);
test_query('(not (height))', true);
test_query('(not (unknown))', false);
test_query('(not unknown(width))', false);
// "and" in <container-query>:
test_query('((width) and (width))', true);
test_query('((width) and (width) and (width))', true);
test_query('((height) and (height))', false);
test_query('((height) and (width) and (width))', false);
test_query('((width) and (height) and (width))', false);
test_query('((width) and (width) and (height))', false);
test_query('((unknown) and (width) and (width))', false);
test_query('((width) and (unknown) and (width))', false);
test_query('((width) and (width) and (unknown))', false);
// "or" in <container-query>:
test_query('((width) or (width))', true);
test_query('((width) or (width) or (width))', true);
test_query('((height) or (height))', false);
test_query('((height) or (width) or (width))', true);
test_query('((width) or (height) or (width))', true);
test_query('((width) or (width) or (height))', true);
test_query('((unknown) or (width) or (width))', true);
test_query('((width) or (unknown) or (width))', true);
test_query('((width) or (width) or (unknown))', true);
test_query('((unknown) or (height) or (width))', true);
// Combinations, <container-query>:
test_query('(not ((width) and (width)))', false);
test_query('(not ((width) and (height)))', true);
test_query('((width) and (not ((height) or (width))))', false);
test_query('((height) or (not ((height) and (width))))', true);
test_query('((height) or ((height) and (width)))', false);
</script>
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