third_party/blink/web_tests/fast/forms/button-text-transform.html

<p>
    Test for <i><a href="http://bugs.webkit.org/show_bug.cgi?id=15181">http://bugs.webkit.org/show_bug.cgi?id=15181</a>
    text-transform: uppercase not working in input (submit, reset, button) elements</i>.
</p>

<p>
    <button style="text-transform: uppercase">uppercase</button>
    <button style="text-transform: lowercase">LOWERCASE</button>
    <button style="text-transform: capitalize">capitalize</button>
</p>
<p>
    <input type="button" style="text-transform: uppercase" value="uppercase">
    <input type="button" style="text-transform: lowercase" value="LOWERCASE">
    <input type="button" style="text-transform: capitalize" value="capitalize">
</p>