File: overflow-auto-007.html

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<!DOCTYPE html>
<html>
<title>CSS Flexbox: vertical space after changes with overflow: auto and flex-direction: column.</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#overflow-properties">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-direction-property">
<link rel="help" href="https://crbug.com/590683">
<link rel="help" href="https://crbug.com/594465">
<link rel="match" href="reference/overflow-auto-007-ref.html">
<meta name="assert" content="This test checks that vertical space allocated to the content of a flexbox with 'overflow: auto' and 'flex-direction: column' is properly computed when its contents change." />

<style>
body {
  width: 400px;
  height: 300px;
}

.flexbox {
  display: flex;
}

.column {
  flex-direction: column;
}

.flex11a {
  flex: 1 1 auto;
}

.root {
  height: 100px;
  overflow-y: auto;
}
</style>

<body onload="runTest()">

<p>This test should not have a horizontal scrollbar</p>

<div class="flexbox column">
  <div class="flexbox">
    <div class="flex11a">
      <div class="root">
        <div id="history"></div>
      </div>
    </div>
  </div>
</div>

<script>
function runTest() {
  var historyEl = document.getElementById('history');
  historyEl.offsetWidth;
  historyEl.innerText = '\n\n\n\n\n\n\n\n';
};
</script>

</body>
</html>