chromium/third_party/blink/manual_tests/find-count-matches-after-text-control.html

<p>
    Test that text matches are counted correctly when a match occurs inside a text field.
</p>
<p>
    To test:
    <ol>
        <li>Choose Edit > Find > Find</li>
        <li>In the Find field, type &ldquo;lemon&rdquo;
    </ol>
</p>
<p>
    The test passes if the Find banner says &ldquo;3 matches&rdquo;.
</p>
<input value="a lemon in a text field"> and another lemon.