chromium/third_party/blink/web_tests/external/wpt/content-security-policy/style-src-attr-elem/style-src-elem-allowed-src-blocked.html

<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Security-Policy" content="style-src-elem 'unsafe-inline';
    style-src 'none';">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script>
      var t = async_test("Inline style should be applied");
      window.addEventListener('securitypolicyviolation', t.unreached_func("Should not have fired a spv event"));
    </script>
</head>

<body>
    <style>
      body {background: green;}
    </style>
    <script>
      t.step(function() {
        assert_equals(document.styleSheets.length, 1);
        t.done();
      });
    </script>
</body>

</html>