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<!DOCTYPE html>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script>
function createRangeWithUnparentedContainerOfSingleElement() {
const range = document.createRange();
const container = document.createElement("container");
const element = document.createElement("element");
container.appendChild(element);
range.selectNode(element);
return range;
}
function nestRangeInOuterContainer(range) {
range.startContainer.ownerDocument.createElement("outer").appendChild(range.startContainer);
}
function moveNodeToNewlyCreatedDocumentWithAppendChild(node) {
document.implementation.createDocument(null, null).appendChild(node);
}
//Tests removing only element
test(()=>{
const range = createRangeWithUnparentedContainerOfSingleElement();
range.startContainer.removeChild(range.startContainer.firstChild);
assert_equals(range.endOffset, 0);
}, "Range in document: Removing the only element in the range must collapse the range");
//Tests removing only element after parented container moved to another document
test(()=>{
const range = createRangeWithUnparentedContainerOfSingleElement();
nestRangeInOuterContainer(range);
moveNodeToNewlyCreatedDocumentWithAppendChild(range.startContainer);
assert_equals(range.endOffset, 0);
}, "Parented range container moved to another document with appendChild: Moving the element to the other document must collapse the range");
//Tests removing only element after parentless container moved oo another document
test(()=>{
const range = createRangeWithUnparentedContainerOfSingleElement();
moveNodeToNewlyCreatedDocumentWithAppendChild(range.startContainer);
range.startContainer.removeChild(range.startContainer.firstChild);
assert_equals(range.endOffset, 0);
}, "Parentless range container moved to another document with appendChild: Removing the only element in the range must collapse the range");
//Tests removing only element after parentless container of container moved to another document
test(()=>{
const range = createRangeWithUnparentedContainerOfSingleElement();
nestRangeInOuterContainer(range);
moveNodeToNewlyCreatedDocumentWithAppendChild(range.startContainer.parentNode);
range.startContainer.removeChild(range.startContainer.firstChild);
assert_equals(range.endOffset, 0);
}, "Range container's parentless container moved to another document with appendChild: Removing the only element in the range must collapse the range");
</script>
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