chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flexbox-lines-must-be-stretched-by-default.html

<!DOCTYPE html>
<title>CSS Flexbox: align-content initial value.</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#align-content-property">
<meta name="assert" content="This test ensures that a flexbox container's align-content value default to 'stretch'."/>
<style>
.flex-container {
  display: flex;
  height: 100px;
  width: 200px;
  background-color: pink;
  flex-wrap: wrap;
}
.flex-item1 {
  width: 100%;
  background-color: blue;
  border: 1px solid;
  border-color: red;
}
.flex-item2 {
  width: 100%;
  background-color: blue;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.flex-container')">
  <div id="flexContainer" class="flex-container">
    <div id="flexItem1" class="flex-item1" data-expected-height=51></div>
    <div id="flexItem2" class="flex-item2" data-expected-height=49></div>
  </div>
</body>