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Test Info:

<!DOCTYPE HTML>
<html>
<head>
<meta charset='utf-8'>
<title>dynamic sibling selector testcase</title>
<script>
window.onload = function() {
document.getElementById("adjacent").appendChild(document.createTextNode("PASS: You should see this"));
document.getElementById("general").appendChild(document.createTextNode("PASS: You should also see this"));
};
</script>
<style>
.test {
background: #fcc;
}
#adjacent:not(:empty), #general:not(:empty) {
background: #cfc;
}
#adjacent:not(:empty) + .test {
display: none;
}
#general:not(:empty) ~ .test {
display: none;
}
</style>
</head>
<body>
<div>
<div id="adjacent"></div>
<div class="test">
FAIL: You should NOT see me.
</div>
</div>
<div>
<div id="general"></div>
<div class="test">
FAIL: You should NOT see me either.
</div>
<div class="test">
FAIL: You should NOT even see me.
</div>
</div>
</body>
</html>