chromium/third_party/blink/web_tests/html/marquee/marquee-scroll.html

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<title>Test for marquee scrolling behavior</title>
<body>

<p>Test for <a href="http://bugs.webkit.org/show_bug.cgi?id=15263">bug 15263</a>:
REGRESSION: scrolldelay=0 causes marquee not to display</p>

<p>The marquee below is defined with a scrollDelay value of zero and with the truespeed attribute assigned to an empty string.  It should scroll until the text, &quot;The marquee scroll test passed&quot is visible and left justified.</p>

<p>This test uses cyan characters to make the result image deterministic.
(Otherwise, the result image changes depending on when the content_shell takes a snapshot.)
In order to run this test manually, change the color to black.</p>

<marquee width="50%" behavior="slide" bgcolor="cyan" truespeed="" scrollDelay="0">
<span style="color:cyan">The marquee scroll test passed</span>
</marquee>

<script>
if (window.testRunner)
    testRunner.dumpAsTextWithPixelResults();
</script>
</body>
</html>