mozilla-release/testing/web-platform/tests/content-security-policy/generic/directive-name-case-insensitive.sub.html

<!DOCTYPE html>
<html>

<head>
    <meta http-equiv="Content-Security-Policy" content="
      IMg-sRC 'self' 'unsafe-inline' http://{{domains[www1]}}:{{ports[http][0]}};
      img-src 'self' 'unsafe-inline' http://{{domains[www2]}}:{{ports[http][0]}};">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
</head>

<body>
  <script>
    var t1 = async_test("Test that the www1 image is allowed to load");
    var t2 = async_test("Test that the www2 image is not allowed to load");
    var t_spv = async_test("Test that the www2 image throws a violation event");
    window.addEventListener("securitypolicyviolation", t_spv.step_func_done(function(e) {
      assert_equals(e.violatedDirective, "img-src");
      assert_equals(e.blockedURI, "http://{{domains[www2]}}:{{ports[http][0]}}/content-security-policy/support/fail.png");
    }));
  </script>

  <img src="http://{{domains[www1]}}:{{ports[http][0]}}/content-security-policy/support/pass.png"
       onload="t1.done();"
       onerror="t1.step(function() { assert_unreached('www1 image should have loaded'); t1.done(); });">

  <img src="http://{{domains[www2]}}:{{ports[http][0]}}/content-security-policy/support/fail.png"
       onerror="t2.done();"
       onload="t2.step(function() { assert_unreached('www2 image should not have loaded'); t2.done(); });">
</body>

</html>