chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flexitem-stretch-image.html

<!DOCTYPE html>
<html>
<title>CSS Flexbox: image stretch</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-property">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#min-size-auto">
<link href="support/flexbox.css" rel="stylesheet">
<meta name="assert" content="This test ensures that flexbox stretches a given image
to fit the size of flexitem according to flex values.">
<style>
.flexbox {
    width: 600px;
    display: flex;
    background-color: #aaa;
    position: relative;
    min-height: 10px;
}
.flexbox > * {
    margin: 0;
    border: 0;
    padding: 0;
    min-width: 0;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.flexbox')">
<div id=log></div>

<div class="flexbox">
  <img data-expected-display="block" data-expected-width="345" data-expected-height="345" style="flex: 1 0 auto;" src="support/100x100-blue.png">
  <img data-expected-display="block" data-expected-width="255" data-expected-height="345" style="flex: 1 0 auto;" src="support/10x10-green.png">
</div>

</body>