<!doctype html>
<html>
<head>
    <meta http-equiv="Content-Security-Policy" content="style-src 'self' 'sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='; script-src 'self' 'unsafe-inline'">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>

    <script>
      var t = async_test("Inline injected style without text content should be allowed");
      document.addEventListener("securitypolicyviolation", t.unreached_func("Should not trigger a security policy violation"));
      t.done();

      const style_null_child = document.createElement("style");
      document.head.appendChild(style_null_child);
      test(function() {
        assert_not_equals(style_null_child.sheet, undefined, "style_null_child should have a stylesheet");
        assert_class_string(style_null_child.sheet, "CSSStyleSheet");
      }, "Inline style sheet should be created with null child node");

      const style_empty_child = document.createElement("style");
      style_empty_child.appendChild(document.createTextNode(""));
      document.head.appendChild(style_empty_child);
      test(function() {
        assert_not_equals(style_empty_child.sheet, undefined, "style_empty_child should have a stylesheet");
        assert_class_string(style_empty_child.sheet, "CSSStyleSheet");
      }, "Inline style should be created with empty-string child node");

      const { sheet } = style_empty_child;
      sheet.insertRule("#content { margin-left: 2px; }");
    </script>
</head>
<body>
    <div id='log'></div>

    <div id="content">Lorem ipsum</div>

    <script>
      test(function() {
        var contentEl = document.getElementById("content");
        var background_color = getComputedStyle(contentEl).getPropertyValue('margin-left');
        assert_equals(background_color, "2px");
      }, "Inline style should be applied");
    </script>

</body>
</html>
