chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/overflow-auto-004.html

<!DOCTYPE html>
<html>
<title>CSS Flexbox: no unnecessary scrollbars with overflow: auto.</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-direction-property">
<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#overflow-properties">
<link rel="help" href="https://crbug.com/646288"/>
<meta name="assert" content="This test ensures that no vertical scrollbar is rendered with 'overflow: auto' and 'flex-direction: column' when only horizontal scrolling is needed."/>

<style>
* {
  min-width: 0;
  min-height: 0;
}

body {
  width: 800px;
}

#list-wrapper {
  display: flex;
  flex-direction: column;
}

#player-list-wrapper {
  flex-grow: 1;
  overflow: auto;
}
</style>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<body onload="checkLayout('#list-wrapper')">

<p>No vertical scrollbar should be rendered for this content.</p>

<div id="list-wrapper" data-expected-width="800">
  <div id="player-list-wrapper" data-expected-width="800">
    <div data-expected-width="800">http://www.ispeech.org/p/generic/getaudio?text=http%3A%2F%2Fwww.ispeech.org%2Ftext.to.speech%3Flink%3Dhttp%253A%252F%252Fwww.ispeech.org%252Ftext.to.speech%253Fvoice%253Dusenglishfemale%2526action%253Dconvert%2526speed%253D0%2526text%253DType%252520some%252520text%252520and%252520click%252520play%2C&amp;voice=usenglishfemale&amp;speed=0&amp;action=convert</div>
  </div>
</div>

</body>
</html>