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+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-template-element/template-element/node-document-changes.html
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+<!DOCTYPE html>
+<html>
+<head>
+<title>HTML Templates: When node's document changes its owner document should be changed</title>
+<meta name="author" title="Sergey G. Grekhov" href="mailto:sgrekhov@unipro.ru">
+<meta name="author" title="Aleksei Yu. Semenov" href="mailto:a.semenov@unipro.ru">
+<meta name="assert" content="When a template element's node document changes, the template element's content DocumentFragment must be adopted into the new node document's template contents owner document">
+<link rel="help" href="http://www.w3.org/TR/2013/WD-html-templates-20130214/#template-element">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src='/html/resources/common.js'></script>
+</head>
+<body>
+<div id="log"></div>
+<script type="text/javascript">
+
+test(function() {
+    var doc1 = newHTMLDocument();
+    var template = doc1.createElement('template');
+
+    assert_equals(template.ownerDocument, doc1, 'Wrong template node owner document');
+    assert_not_equals(template.content.ownerDocument, doc1,
+            'Wrong template content owner document');
+
+    var doc2 = newHTMLDocument();
+    var template2 = doc2.createElement('template');
+    doc2.body.appendChild(template);
+
+    assert_equals(template.ownerDocument, template2.ownerDocument,
+            'Template node owner document should be changed');
+    assert_equals(template.content.ownerDocument, template2.content.ownerDocument,
+            'Template content owner document should be changed');
+
+}, 'Changing of template element\'s node document. ' +
+    'Test that ownerDocument of an empty template and its content changes');
+
+test(function() {
+    var doc1 = newHTMLDocument();
+    doc1.body.innerHTML = '<template id="tmpl"><div>Div content</div> And some more text</template>';
+
+    var template = doc1.querySelector('#tmpl');
+
+    assert_equals(template.ownerDocument, doc1,
+            'Wrong template node owner document');
+    assert_not_equals(template.content.ownerDocument, doc1,
+            'Wrong template content owner document');
+
+    var doc2 = newHTMLDocument();
+    var template2 = doc2.createElement('template');
+    doc2.body.appendChild(template);
+
+    assert_equals(template.ownerDocument, template2.ownerDocument,
+            'Template node owner document should be changed');
+    assert_equals(template.content.ownerDocument, template2.content.ownerDocument,
+            'Template content owner document should be changed');
+
+    assert_equals(template.content.querySelector('div').ownerDocument,
+            template2.content.ownerDocument,
+            'Template content descendants owner document should be changed');
+
+}, 'Changing of template element\'s node document. ' +
+    'Test that ownerDocument of a not empty template and its content changes');
+
+test(function() {
+    var doc1 = newHTMLDocument();
+    doc1.body.innerHTML = ''
+            + '<template id="tmpl"><div>Div content</div> And some more text'
+            + '<template id="tmpl2"><div>Template content</div></template>'
+            + '</template>';
+
+    var template = doc1.querySelector('#tmpl');
+
+    assert_equals(template.ownerDocument, doc1, 'Wrong template node owner document');
+    assert_not_equals(template.content.ownerDocument, doc1,
+            'Wrong template content owner document');
+
+    var nestedTemplate = template.content.querySelector('#tmpl2');
+
+    assert_equals(nestedTemplate.ownerDocument, template.content.ownerDocument,
+            'Wrong nested template node owner document');
+    assert_equals(nestedTemplate.content.ownerDocument, template.content.ownerDocument,
+            'Wrong nested template content owner document');
+
+    var doc2 = newHTMLDocument();
+    var template2 = doc2.createElement('template');
+    doc2.body.appendChild(template);
+
+    assert_equals(template.ownerDocument, template2.ownerDocument,
+            'Template node owner document should be changed');
+    assert_equals(template.content.ownerDocument, template2.content.ownerDocument,
+            'Template content owner document should be changed');
+    assert_equals(template.content.querySelector('div').ownerDocument,
+            template2.content.ownerDocument,
+            'Template content descendants owner document should be changed');
+
+    assert_equals(nestedTemplate.ownerDocument,
+            template2.content.ownerDocument,
+            'Nested template node owner document should be changed');
+    assert_equals(nestedTemplate.content.ownerDocument,
+            template2.content.ownerDocument,
+            'Nested template content owner document should be changed');
+    assert_equals(nestedTemplate.content.querySelector('div').ownerDocument,
+            template2.content.ownerDocument,
+            'Owner document of the nested template content descendants should be changed');
+
+}, 'Changing of template element\'s node document. ' +
+    'Test that ownerDocument of nested template and its content changes');
+
+testInIFrame('../resources/template-contents.html', function(context) {
+    var doc1 = context.iframes[0].contentDocument;
+
+    var template = doc1.body.querySelector('template');
+
+    var doc2 = newHTMLDocument();
+    var template2 = doc2.createElement('template');
+    doc2.body.appendChild(template);
+
+    assert_equals(template.ownerDocument, template2.ownerDocument,
+            'Template node owner document should be changed');
+    assert_equals(template.content.ownerDocument,
+            template2.content.ownerDocument,
+            'Template content owner document should be changed');
+    assert_equals(template.content.querySelector('div').ownerDocument,
+            template2.content.ownerDocument,
+            'Template content descendants owner document should be changed');
+
+}, 'Changing of template element\'s node document. ' +
+    'Test document loaded from a file');
+
+testInIFrame('../resources/template-contents.html', function(context) {
+    var doc1 = context.iframes[0].contentDocument;
+
+    var doc2 = newHTMLDocument();
+    var template = doc2.createElement('template');
+    var div = doc2.createElement('div');
+    template.content.appendChild(div);
+
+    doc1.body.appendChild(template);
+
+    assert_not_equals(template.ownerDocument, doc2,
+            'Template node owner document should be changed');
+    assert_not_equals(template.content.ownerDocument, doc2,
+            'Template content owner document should be changed');
+    assert_not_equals(div.ownerDocument, doc2,
+            'Template content descendants owner document should be changed');
+
+    assert_equals(template.ownerDocument, doc1,
+            'Template node owner document should be changed');
+    // doc1 has browsing context so it cannot be template.content.ownerDocument
+    assert_not_equals(template.content.ownerDocument, doc1,
+            'Template content owner document should be a new document');
+    assert_equals(div.ownerDocument, template.content.ownerDocument,
+            'Template content descendants owner document should be ' +
+            'template content document owner');
+
+}, 'Changing of template element\'s node document. ' +
+    'Adobt template element into a document that has a browsing context');
+
+testInIFrame('../resources/template-contents.html', function(context) {
+    var doc1 = context.iframes[0].contentDocument;
+
+    var template = doc1.querySelector('template');
+    var div = template.content.querySelector('div');
+    var templateContentOwner = template.content.ownerDocument;
+
+    var doc2 = document;
+
+    doc2.body.appendChild(template);
+
+    assert_not_equals(template.ownerDocument, doc1,
+            'Template node owner document should be changed');
+    assert_not_equals(template.content.ownerDocument, templateContentOwner,
+            'Template content owner document should be changed');
+    assert_not_equals(div.ownerDocument, templateContentOwner,
+            'Template content descendants owner document should be changed');
+
+    assert_equals(template.ownerDocument, doc2,
+            'Template node owner document should be changed');
+    // doc2 has browsing context, so it cannot be template.content.ownerDocument
+    assert_not_equals(template.content.ownerDocument, doc2,
+            'Template content owner document should be a new document');
+    assert_equals(div.ownerDocument, template.content.ownerDocument,
+            'Template content descendants owner document should be ' +
+            'template content document owner');
+
+}, 'Changing of template element\'s node document. ' +
+    'Test the case when both old and new owner documents of template element ' +
+    'have browsing context');
+
+</script>
+</body>
+</html>