<!DOCTYPE HTML>
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<head>
    <script src='/resources/testharness.js'></script>
    <script src='/resources/testharnessreport.js'></script>
</head>
<body>
  <script>
    var tests = [
      // Make sure that csp works properly in normal situations
      { "csp": "", "expected": true, "name": "Should load image without any CSP" },
      { "csp": "img-src 'none';", "expected": false, "name": "Should not load image with 'none' CSP" },
      // Ensure ASCII whitespaces are properly parsed
      // ASCII whitespace is U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, or U+0020 SPACE.

      // between directive name and value
      { "csp": "img-src\u0009'none';", "expected": false, "name": "U+0009 TAB   should be properly parsed between directive name and value" },
      { "csp": "img-src\u000C'none';", "expected": false, "name": "U+000C FF    should be properly parsed between directive name and value" },
      { "csp": "img-src\u000A'none';", "expected": false, "name": "U+000A LF    should be properly parsed between directive name and value" },
      { "csp": "img-src\u000D'none';", "expected": false, "name": "U+000D CR    should be properly parsed between directive name and value" },
      { "csp": "img-src\u0020'none';", "expected": false, "name": "U+0020 SPACE should be properly parsed between directive name and value" },

      // inside directive value
      { "csp": "img-src http://example.com\u0009http://example2.com;", "expected": false, "name": "U+0009 TAB   should be properly parsed inside directive value" },
      { "csp": "img-src http://example.com\u000Chttp://example2.com;", "expected": false, "name": "U+000C FF    should be properly parsed inside directive value" },
      { "csp": "img-src http://example.com\u000Ahttp://example2.com;", "expected": false, "name": "U+000A LF    should be properly parsed inside directive value" },
      { "csp": "img-src http://example.com\u000Dhttp://example2.com;", "expected": false, "name": "U+000D CR    should be properly parsed inside directive value" },
      { "csp": "img-src http://example.com\u0020http://example2.com;", "expected": false, "name": "U+0020 SPACE should be properly parsed inside directive value" },

      // Ensure nbsp (U+00A0) is not considered a valid whitespace
      // https://github.com/webcompat/web-bugs/issues/18902 has more details about why this particularly relevant
      { "csp": "img-src\u00A0'none';", "expected": true, "name": "U+00A0 NBSP  should not be parsed between directive name and value" },
      { "csp": "img-src http://example.com\u00A0http://example2.com;", "expected": true, "name": "U+00A0 NBSP  should not be parsed inside directive value" },
    ];

    tests.forEach(test => {
      async_test(t => {
        var url = "support/load_img_and_post_result_meta.sub.html?csp=" + encodeURIComponent(test.csp);
        test_image_loads_as_expected(test, t, url);
      }, test.name + " - meta tag");

      // We can't test csp delivered in an HTTP header if we're testing CR/LF characters
      if (test.csp.indexOf("\u000A") == -1 && test.csp.indexOf("\u000D") == -1) {
        async_test(t => {
          var url = "support/load_img_and_post_result_meta.sub.html?csp=" + encodeURIComponent(test.csp);
          test_image_loads_as_expected(test, t, url);
        }, test.name + " - HTTP header");
      }
    });

    function test_image_loads_as_expected(test, t, url) {
      var i = document.createElement('iframe');
      i.src = url;
      window.addEventListener('message', t.step_func(function(e) {
        if (e.source != i.contentWindow) return;
        if (test.expected) {
          assert_equals(e.data, "img loaded");
        } else {
          assert_equals(e.data, "img not loaded");
        }
        t.done();
      }));
      document.body.appendChild(i);
    }
  </script>
</body>
</html>