color-mix-currentcolor-background-repaint-parent.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>currentColor in color-mix() used in background-color repaints properly when parent color changes</title>
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
<link rel="help" href="https://drafts.csswg.org/css-color/#currentcolor-color">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
    #container {
        color: red;
    }

    #container.green {
        color: green;
    }

    #target {
        background-color: color-mix(in hsl, transparent 0%, currentColor 100%);
        width: 100px;
        height: 100px;
    }
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div id="container">
    <div id="target"></div>
</div>

<script src="/web-animations/testcommon.js"></script>
<script>
  addEventListener("load", async () => {
    // crbug.com/1378671: Screenshot can be taken while compositor commits are
    // still being deferred for first contentful paint (FCP). Wait for FCP
    // before starting the test.
    await waitForCompositorReady();
    requestAnimationFrame(() => {
      requestAnimationFrame(() => {
        container.classList.add("green");
        requestAnimationFrame(() => {
          document.documentElement.classList.remove("reftest-wait");
        });
      });
    });
  });
</script>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-backgrounds/color-mix-currentcolor-background-repaint-parent.html