container-type-layout-invalidation.html

<!doctype html>
<title>container-type layout invalidation</title>
<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#size-container">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
  #div {
    width: fit-content;
  }
</style>
<div id=div>
  content
</div>
<script>
  setup(() => assert_implements_container_queries());

  test(function(t) {
    t.add_cleanup(() => { div.style = ''; });

    assert_greater_than(div.offsetWidth, 0);
    assert_greater_than(div.offsetHeight, 0);

    div.style.containerType = 'size';

    assert_equals(div.offsetWidth, 0);
    assert_equals(div.offsetHeight, 0);
  }, 'Changing container-type invalidates layout');
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-conditional/container-queries/container-type-layout-invalidation.html