adoption.window.js

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /dom/nodes/adoption.window.html - WPT Dashboard Interop Dashboard

// Testing DocumentFragment with host separately as it has a different node document by design

test(() => {

  const df = document.createElement("template").content;

  const child = df.appendChild(new Text('hi'));

  assert_not_equals(df.ownerDocument, document);

  const nodeDocument = df.ownerDocument;

  document.body.appendChild(df);

  assert_equals(df.childNodes.length, 0);

  assert_equals(child.ownerDocument, document);

  assert_equals(df.ownerDocument, nodeDocument);

}, `appendChild() and DocumentFragment with host`);

test(() => {

  const df = document.createElement("template").content;

  const child = df.appendChild(new Text('hi'));

  const nodeDocument = df.ownerDocument;

  document.adoptNode(df);

  assert_equals(df.childNodes.length, 1);

  assert_equals(child.ownerDocument, nodeDocument);

  assert_equals(df.ownerDocument, nodeDocument);

}, `adoptNode() and DocumentFragment with host`);

    "name": "DocumentFragment",

    "creator": doc => doc.createDocumentFragment()

},

    "name": "ShadowRoot",

    "creator": doc => doc.createElementNS("http://www.w3.org/1999/xhtml", "div").attachShadow({mode: "closed"})

].forEach(dfTest => {

  test(() => {

    const doc = new Document();

    const df = dfTest.creator(doc);

    const child = df.appendChild(new Text('hi'));

    assert_equals(df.ownerDocument, doc);

    document.body.appendChild(df);

    assert_equals(df.childNodes.length, 0);

    assert_equals(child.ownerDocument, document);

    assert_equals(df.ownerDocument, doc);

  }, `appendChild() and ${dfTest.name}`);

  test(() => {

    const doc = new Document();

    const df = dfTest.creator(doc);

    const child = df.appendChild(new Text('hi'));

    if (dfTest.name === "ShadowRoot") {

      assert_throws_dom("HierarchyRequestError", () => document.adoptNode(df));

    } else {

      document.adoptNode(df);

      assert_equals(df.childNodes.length, 1);

      assert_equals(child.ownerDocument, document);

      assert_equals(df.ownerDocument, document);

  }, `adoptNode() and ${dfTest.name}`);

});