File: write-active-document.html

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<!doctype html>
<title>document.write only writes to active documents</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body><div id="log"></div></body>
<script>
  async_test(function(t) {
    var child = document.createElement("iframe");
    child.src = "empty.html?1";
    child.onload = t.step_func(function() {
      var child1 = child.contentDocument;
      var link = child1.createElement("a");
      link.href = "data:text/html,Clicked.";
      link.innerText = "Link.";
      child1.body.appendChild(link);
      var grandchild = child1.createElement("iframe");
      grandchild.src = "empty.html?2";
      grandchild.onload = t.step_func(function() {
        var grandchild1 = grandchild.contentDocument;
        child.onload = t.step_func(function() {
          // This is a write to an inactive document
          child1.write('WRITE HAPPENED');
          assert_equals(child1.body.lastChild.tagName, "IFRAME");
          // This is a write to an active but not fully active document
          grandchild1.write('WRITE HAPPENED');
          assert_equals(grandchild1.body.innerHTML, "WRITE HAPPENED");
          t.done();
        });
        link.click();
      });
      child1.body.appendChild(grandchild);
    });
    document.body.appendChild(child);
  });
</script>