Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/virtual/text-antialias/emoji-vs-system-fallback.html 

<!DOCTYPE html>
<title>Test emoji variation selectors support for system fallback fonts</title>
<style>
  @font-face {
    font-family: "MonoEmojiFont";
    src: url(../../third_party/NotoEmoji/NotoEmoji-Regular.subset.ttf);
  }

  @font-face {
    font-family: "ColorEmojiFont";
    src: url(../../third_party/NotoColorEmoji/NotoColorEmoji.ttf);
  }

  div {
    font-size: 30px;
  }

  .color {
    font-family: "ColorEmojiFont";
  }

  .mono {
    font-family: "MonoEmojiFont";
  }
</style>

<!-- &#x2603; is text default emoji; &#x2614; is emoji default emoji. -->
<p>Test passes if the following emojis are rendered in monochromatic (text) style</p>
<div>&#x2603;</div>
<div class="color">&#x2603;&#xfe0e;</div>
<div class="color">&#x2614;&#xfe0e;</div>

<p>Test passes if the following emojis are rendered in color (emoji) style</p>
<div>&#x2614;</div>
<div class="mono">&#x2603;&#xfe0f;</div>
<div class="mono">&#x2614;&#xfe0f;</div>