| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSS Container Queries Test: Invalidate size container query for Shadow DOM</title> |
| <link rel="help" href="https://drafts.csswg.org/css-contain-3/#query-container"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/declarative-shadow-dom-polyfill.js"></script> |
| <script src="support/cq-testcommon.js"></script> |
| <style> |
| .container { |
| container-type: inline-size; |
| width: 100px; |
| } |
| @container (width = 200px) { |
| .target { color: green; } |
| } |
| </style> |
| <div id="host_container" class="container"> |
| <template shadowroot="open"> |
| <div class="container"> |
| <slot></slot> |
| </div> |
| </template> |
| <div class="target">Green</div> |
| </div> |
| <div id="non_host_container" class="container"> |
| <div> |
| <template shadowroot="open"> |
| <div class="container"> |
| <slot></slot> |
| </div> |
| </template> |
| <div class="target">Green</div> |
| </div> |
| </div> |
| <script> |
| setup(() => { |
| assert_implements_container_queries(); |
| polyfill_declarative_shadow_dom(document); |
| }); |
| |
| const green = "rgb(0, 128, 0)"; |
| |
| test(() => { |
| document.body.offsetTop; |
| host_container.style.width = "200px"; |
| assert_equals(getComputedStyle(document.querySelector("#host_container .target")).color, green); |
| }, "Host container child invalidated with container in shadow tree"); |
| |
| test(() => { |
| document.body.offsetTop; |
| non_host_container.style.width = "200px"; |
| assert_equals(getComputedStyle(document.querySelector("#non_host_container .target")).color, green); |
| }, "Non-host container child invalidated with container in shadow tree"); |
| </script> |