<!DOCTYPE html>
<script src="/resources/testharness.js" nonce="abc"></script>
<script src="/resources/testharnessreport.js" nonce="abc"></script>

<!-- `Content-Security-Policy: script-src 'nonce-abc'; img-src 'none'` delivered via headers -->

<body>
<!-- Basics -->
<script nonce="abc" id="testScript">
  document.currentScript.setAttribute('executed', 'yay');
</script>

<script nonce="abc">
    var script = document.querySelector('#testScript');

    test(t => {
      // Query Selector
      assert_equals(document.querySelector('body [nonce]'), script);
      assert_equals(document.querySelector('body [nonce=""]'), script);
      assert_equals(document.querySelector('body [nonce=abc]'), null);

      assert_equals(script.getAttribute('nonce'), '');
      assert_equals(script.nonce, 'abc');
    }, "Reading 'nonce' content attribute and IDL attribute.");

    // Clone node.
    test(t => {
      script.setAttribute('executed', 'boo');
      var s2 = script.cloneNode();
      assert_equals(s2.nonce, 'abc', 'IDL attribute');
      assert_equals(s2.getAttribute('nonce'), '');
    }, "Cloned node retains nonce.");

    async_test(t => {
      var s2 = script.cloneNode();
      document.head.appendChild(s2);
      assert_equals(s2.nonce, 'abc');
      assert_equals(s2.getAttribute('nonce'), '');

      window.addEventListener('load', t.step_func_done(_ => {
        // The cloned script won't execute, as its 'already started' flag is set.
        assert_equals(s2.getAttribute('executed'), 'boo');
      }));
    }, "Cloned node retains nonce when inserted.");

    // Set the content attribute to 'foo'
    test(t => {
      script.setAttribute('nonce', 'foo');
      assert_equals(script.getAttribute('nonce'), 'foo');
      assert_equals(script.nonce, 'foo');
    }, "Writing 'nonce' content attribute.");

    // Set the IDL attribute to 'bar'
    test(t => {
      script.nonce = 'bar';
      assert_equals(script.nonce, 'bar');
      assert_equals(script.getAttribute('nonce'), 'foo');
    }, "Writing 'nonce' IDL attribute.");

    // Fragment parser.
    var documentWriteTest = async_test("Document-written script executes.");
    document.write(`<script nonce='abc'>
      documentWriteTest.done();
      test(t => {
        var script = document.currentScript;
        assert_equals(script.getAttribute('nonce'), '');
        assert_equals(script.nonce, 'abc');
      }, "Document-written script's nonce value.");
    </scr` + `ipt>`);

    // Create node.
    async_test(t => {
      var s = document.createElement('script');
      s.innerText = script.innerText;
      s.nonce = 'abc';
      assert_equals(s.nonce, 'abc');
      assert_equals(s.getAttribute('nonce'), null);
      document.head.appendChild(s);
      assert_equals(s.nonce, 'abc');
      assert_equals(s.getAttribute('nonce'), null);

      window.addEventListener('load', t.step_func_done(_ => {
        assert_equals(s.getAttribute('executed'), 'yay');
      }));
    }, "createElement.nonce.");

    async_test(t => {
      var s = document.createElement('script');
      s.innerText = script.innerText;
      s.nonce = 'zyx';
      s.setAttribute('nonce', 'abc');
      assert_equals(s.nonce, 'abc');
      document.head.appendChild(s);
      assert_equals(s.nonce, 'abc');
      assert_equals(s.getAttribute('nonce'), '');

      window.addEventListener('load', t.step_func_done(_ => {
        assert_equals(s.getAttribute('executed'), 'yay');
      }));
    }, "setAttribute('nonce') overwrites '.nonce' upon insertion.");

    // Create node.
    async_test(t => {
      var s = document.createElement('script');
      s.innerText = script.innerText;
      s.setAttribute('nonce', 'abc');
      assert_equals(s.getAttribute('nonce'), 'abc', "Pre-insertion content");
      assert_equals(s.nonce, 'abc', "Pre-insertion IDL");
      document.head.appendChild(s);
      assert_equals(s.nonce, 'abc', "Post-insertion IDL");
      assert_equals(s.getAttribute('nonce'), '', "Post-insertion content");

      window.addEventListener('load', t.step_func_done(_ => {
        assert_equals(s.getAttribute('executed'), 'yay');
      }));
    }, "createElement.setAttribute.");
</script>

<!-- Custom Element -->
<script nonce="abc">
  var eventList = [];
  class NonceElement extends HTMLElement {
    static get observedAttributes() {
      return ['nonce'];
    }

    constructor() {
      super();
    }

    attributeChangedCallback(name, oldValue, newValue) {
      eventList.push({
        type: "AttributeChanged",
        name: name,
        oldValue: oldValue,
        newValue: newValue
      });
    }

    connectedCallback() {
      eventList.push({
        type: "Connected",
      });
    }
  }

  customElements.define("nonce-element", NonceElement);
</script>
<nonce-element nonce="abc"></nonce-element>
<script nonce="abc">
  test(t => {
    assert_object_equals(eventList[0], { type: "AttributeChanged", name: "nonce", oldValue: null, newValue: "abc" }, "AttributeChanged 1");
    assert_object_equals(eventList[1], { type: "Connected" }, "Connected");
    assert_object_equals(eventList[2], { type: "AttributeChanged", name: "nonce", oldValue: "abc", newValue: "" }, "AttributeChanged 2");
    assert_equals(eventList.length, 3);
  }, "Custom elements expose the correct events.");
</script>

<!-- CSS Leakage -->
<style>
    #cssTest { display: block; }
    #cssTest[nonce=abc] { background: url(/security/resources/abe.png); }
</style>
<script nonce="abc" id="cssTest">
    test(t => {
      const script = document.querySelector('#cssTest');
      t.add_cleanup(() => script.remove());
      var style = getComputedStyle(script);
      assert_equals(style['display'], 'block');
      assert_equals(style['background-image'], 'none');
    }, "Nonces don't leak via CSS side-channels.");
</script>
