chromium/third_party/blink/web_tests/external/wpt/css/css-fonts/font-variant-emoji-003.html

<!DOCTYPE html>
<meta charset="UTF-8" />
<title>CSS Fonts: font-variant-emoji web font test</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-variant-emoji-prop" />
<link rel="help" href="https://www.unicode.org/reports/tr51" />
<link rel="match" href="font-variant-emoji-003-ref.html"/>
<meta name="assert" content="font-variant-emoji sets an emoji's presentation for the emoji default and text default emoji codepoints and affects the fallback font selection."/>
<link rel="stylesheet" type="text/css" href="support/css/variation-sequences.css" />
<style>
    .emoji {
      font-variant-emoji: emoji;
    }

    .text {
      font-variant-emoji: text;
    }

    .unicode {
      font-variant-emoji: unicode;
    }
</style>

<p>Emoji Default</p>
<!-- Codepoint U+1FAE8 has emoji presentation by default,
(Emoji=Yes,Emoji_Presentation=Yes).
See https://www.unicode.org/Public/15.1.0/ucd/emoji/emoji-data.txt.
So when font-variant-emoji is set to `unicode`, the codepoint
should be displayed in color. -->
<div style="font-family: MonoEmojiFont, ColorEmojiFont;">
  <span class="emoji">&#x1fae8;</span>
  <span class="text">&#x1fae8;</span>
  <span class="unicode">&#x1fae8;</span>
</div>

<p>Text Default</p>
<!-- Codepoint U+2139 has text presentation by default,
(Emoji=Yes,Emoji_Presentation=No).
See https://www.unicode.org/Public/15.1.0/ucd/emoji/emoji-data.txt.
So when font-variant-emoji is set to `unicode`, the codepoint
should be displayed in monochrome. -->
<div style="font-family: ColorEmojiFont, MonoEmojiFont;">
  <span class="emoji">&#x2139;</span>
  <span class="text">&#x2139;</span>
  <span class="unicode">&#x2139;</span>
</div>