moving-between-documents-during-evaluation.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/scripting-1/the-script-element/moving-between-documents-during-evaluation.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Moving script elements between documents during evaluation</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/#execute-the-script-block">

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

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

<body>

<script id="outerScript">

"use strict";

async_test(t => {

  const outerScript = document.querySelector('#outerScript');

  assert_equals(document.currentScript, outerScript);

  const innerScript = document.createElement('script');

  window.innerScript = innerScript;

  window.innerScriptEvaluated = false;

  window.anotherDocument = null;

  innerScript.innerText = `

    window.innerScriptEvaluated = true;

    const innerScript = window.innerScript;

    assert_equals(document.currentScript, innerScript,

        '[1] Before move: currentScript of source Document');

    assert_equals(innerScript.ownerDocument, document,

        '[1] Before move: ownerDocument');

    window.anotherDocument = document.implementation.createHTMLDocument();

    window.anotherDocument.body.appendChild(innerScript);

    assert_equals(innerScript.ownerDocument, anotherDocument,

        '[2] Just after move: ownerDocument');

    assert_equals(document.currentScript, innerScript,

        '[2] Just after move: currentScript of source Document');

    assert_equals(anotherDocument.currentScript, null,

        '[2] Just after move: currentScript of destination Document');

`;

  document.body.appendChild(innerScript);

  assert_true(window.innerScriptEvaluated,

      'Inner script should be evaluated synchronously');

  assert_equals(document.currentScript, outerScript,

      '[3] After inner script: currentScript of source Document');

  assert_equals(window.anotherDocument.currentScript, null,

      '[3] After inner script: currentScript of destination Document');

  t.step_timeout(() => {

    assert_equals(document.currentScript, null,

        '[4] After outer script: currentScript of source Document');

    assert_equals(anotherDocument.currentScript, null,

        '[4] After outer script: currentScript of destination Document');

    t.done();

  }, 0);

}, 'Script moved between documents during evaluation');

</script>