selectorText-modification-restyle-002.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /css/cssom/selectorText-modification-restyle-002.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>CSSOM: Modify selectorText in a shadow tree stylesheet</title>

<link rel="author" title="Rune Lillesveen" href="mailto:futhark@chromium.org">

<link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstylerule-selectortext">

<link rel="help" href="https://drafts.csswg.org/css-scoping/#selectors">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>

  #container { color: red }

  .subtree * { color: pink }

</style>

<div id="container">

  <div id="host"></div>

</div>

<script>

  const root = host.attachShadow({mode:"open"});

  root.innerHTML = "<style>nomatch { color: green }</style><div>Green</div>";

  const div = root.querySelector("div");

  test(() => {

    assert_equals(getComputedStyle(div).color, "rgb(255, 0, 0)", "Color should initial be red.");

  }, "Check initial color.");

  test(() => {

    // The combination of the .subtree and CSSOM selector style invalidations

    // caused the Blink implementation to fail an assertion.

    container.className = "subtree";

    root.styleSheets[0].cssRules[0].selectorText = "div";

    assert_equals(getComputedStyle(div).color, "rgb(0, 128, 0)", "Color should be green after stylesheet change.");

  }, "Check that color changes correctly after shadow stylesheet selector and #container class is changed.");

</script>