Node-appendChild-script-and-iframe.tentative.html

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This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /dom/nodes/insertion-removing-steps/Node-appendChild-script-and-iframe.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<title>Node.appendChild: inserting script and iframe</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<body>

<script>

const kScriptContent = `

  state = iframe.contentWindow ? "iframe with content window" : "contentWindow is null";

`;

// This test ensures that a later-inserted script can observe an

// earlier-inserted iframe's contentWindow.

test(t => {

  window.state = "script not run yet";

  window.iframe = document.createElement("iframe");

  t.add_cleanup(() => window.iframe.remove());

  const script = document.createElement("script");

  script.textContent = kScriptContent;

  const div = document.createElement("div");

  div.appendChild(iframe);

  div.appendChild(script);

  assert_equals(state, "script not run yet");

  document.body.appendChild(div);

  assert_equals(state, "iframe with content window");

}, "Script inserted after an iframe in the same appendChild() call can " +

   "observe the iframe's non-null contentWindow");

// The below tests assert that an earlier-inserted script does not observe a

// later-inserted iframe's contentWindow.

test(t => {

  window.state = "script not run yet";

  window.iframe = document.createElement("iframe");

  t.add_cleanup(() => window.iframe.remove());

  const script = document.createElement("script");

  script.textContent = kScriptContent;

  const div = document.createElement("div");

  div.appendChild(script);

  div.appendChild(iframe);

  assert_equals(state, "script not run yet");

  document.body.appendChild(div);

  assert_equals(state, "contentWindow is null");

}, "A script inserted atomically before an iframe (using a div) does not " +

   "observe the iframe's contentWindow, since the 'script running' and " +

   "'iframe setup' both happen in order, after DOM insertion completes");

test(t => {

  window.state = "script not run yet";

  window.iframe = document.createElement("iframe");

  t.add_cleanup(() => window.iframe.remove());

  const script = document.createElement("script");

  script.textContent = kScriptContent;

  const df = document.createDocumentFragment();

  df.appendChild(script);

  df.appendChild(iframe);

  assert_equals(state, "script not run yet");

  document.body.appendChild(df);

  assert_equals(state, "contentWindow is null");

}, "A script inserted atomically before an iframe (using a DocumentFragment) " +

   "does not observe the iframe's contentWindow, since the 'script running' " +

   "and 'iframe setup' both happen in order, after DOM insertion completes");

test(t => {

  window.state = "script not run yet";

  window.iframe = document.createElement("iframe");

  t.add_cleanup(() => window.iframe.remove());

  const script = document.createElement("script");

  script.textContent = kScriptContent;

  assert_equals(state, "script not run yet");

  document.body.append(script, iframe);

  assert_equals(state, "contentWindow is null");

}, "A script inserted atomically before an iframe (using a append() with " +

   "multiple arguments) does not observe the iframe's contentWindow, since " +

   "the 'script running' and 'iframe setup' both happen in order, after DOM " +

   "insertion completes");

</script>