query-evaluation.html

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This test has a WPT meta file that expects 4 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-contain/container-queries/query-evaluation.html - WPT Dashboard Interop Dashboard

<!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))', false);

  test_query('((width) or (unknown) or (width))', false);

  test_query('((width) or (width) or (unknown))', false);

  test_query('((unknown) or (height) or (width))', false);

  // 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>