LayoutTests/fast/forms/button-cannot-be-nested.html

<!DOCTYPE html 
     PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 
        <head>
                <title>Button breakage</title>
        </head>
        <body>
                <div><a href="https://bugs.webkit.org/show_bug.cgi?id=6584">Bug 6584</a> REGRESSION: button after unclosed button gives trouble</div>
                <p>
                        <button/>
                        test
                        <button>test2</button>
                </p>
                <div>There should be two separate buttons instead of button "test2" being nested inside button "test".</div>
        </body>
</html>