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chromium/third_party/blink/web_tests/external/wpt/css/css-lists/list-and-margin-collapse-002.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Lists: test the margin collapse of marker</title>
<link rel=help href="https://www.w3.org/TR/CSS22/generate.html#lists">
<link rel="help" href="http://crbug.com/969741">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<div id="log"></div>

<div id="target_with_marker" style="overflow:hidden; width:100px;">
  <div style="margin-bottom:100px;"></div>
  <div style="display:list-item; margin-left:100px; height:0px;"></div>
  <div style="margin-top:100px;"></div>
</div>

<div id="target_without_marker" style="overflow:hidden; width:100px;">
  <div style="margin-bottom:100px;"></div>
  <div style="display:list-item; margin-left:100px; list-style:none;"></div>
  <div style="margin-top:100px;"></div>
</div>

<script>
test(function() {
  var height_with_marker = document.getElementById("target_with_marker").clientHeight;
  assert_equals(height_with_marker, 200, "Should not allow margin-collapsing through if list is with marker.");
  var height_without_marker = document.getElementById("target_without_marker").clientHeight;
  assert_equals(height_without_marker, 100, "Should allow margin-collapsing through if list is without marker.");
}, "list and margin collapse");
</script>