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Test Info:

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline'; style-src 'self';">
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script>
var t = async_test("Programatically injected stylesheet should not load");
var t_spv = async_test("Should fire a securitypolicyviolation event");
document.addEventListener("securitypolicyviolation", t_spv.step_func_done(function(e) {
assert_equals("style-src-elem", e.violatedDirective);
}));
</script>
<script>
var head = document.getElementsByTagName('head')[0];
var link = document.createElement('link');
link.setAttribute('rel', 'stylesheet');
link.setAttribute('type', 'text/css');
onload = t.step_func_done(function(e) {
var contentEl = document.getElementById("content");
var marginLeftVal = getComputedStyle(contentEl).getPropertyValue('margin-left');
assert_not_equals(marginLeftVal, "2px");
});
head.appendChild(link);
</script>
</head>
<body>
<div id='log'></div>
<div id="content">Lorem ipsum</div>
</body>
</html>