function assertOpenIsEffective(doc, initialNodeCount) {
assert_equals(doc.childNodes.length, initialNodeCount);
// Test direct document.open() call.
assert_equals(doc.open(), doc);
assert_equals(doc.childNodes.length, 0, "after open: no nodes in document");
doc.write("<!DOCTYPE html>");
assert_equals(doc.childNodes.length, 1, "after write: doctype node in document");
doc.close();
assert_equals(doc.childNodes.length, 2, "after parser close: doctype node and an html element in document");
// Test implicit document.open() call through write(). Since we called
// doc.close() above, which sets the insertion point of the parser to
// undefined, document.write() will run the document open steps.
doc.write();
assert_equals(doc.childNodes.length, 0, "after implicit open: no nodes in document");
doc.write("<!DOCTYPE html>");
assert_equals(doc.childNodes.length, 1, "after write: doctype node in document");
doc.close();
assert_equals(doc.childNodes.length, 2, "after parser close: doctype node and an html element in document");
}
test(t => {
const frame = document.body.appendChild(document.createElement("iframe"));
t.add_cleanup(() => frame.remove());
assertOpenIsEffective(frame.contentDocument, 1);
}, "document.open() removes the document's children (fully active document)");
async_test(t => {
const frame = document.body.appendChild(document.createElement("iframe"));
t.add_cleanup(() => frame.remove());
frame.onload = t.step_func(() => {
const childFrame = frame.contentDocument.querySelector("iframe");
const childDoc = childFrame.contentDocument;
const childWin = childFrame.contentWindow;
// Right now childDoc is still fully active.
frame.onload = t.step_func_done(() => {
// Now childDoc is still active but no longer fully active.
assertOpenIsEffective(childDoc, 1);
});
frame.src = "/common/blank.html";
});
frame.src = "resources/page-with-frame.html";
}, "document.open() removes the document's children (active but not fully active document)");
test(t => {
const frame = document.body.appendChild(document.createElement("iframe"));
const doc = frame.contentDocument;
// Right now the frame is connected and it has an active document.
frame.remove();
// Now the frame is no longer connected. Its document is no longer active.
assertOpenIsEffective(doc, 1);
}, "document.open() removes the document's children (non-active document with an associated Window object; frame is removed)");
async_test(t => {
const frame = document.body.appendChild(document.createElement("iframe"));
t.add_cleanup(() => frame.remove());
frame.src = "resources/dummy.html";
frame.onload = t.step_func(() => {
const firstDocument = frame.contentDocument;
// Right now the frame is connected and it has an active document.
frame.onload = t.step_func_done(() => {
// Now even though the frame is still connected, its document is no
// longer active.
assert_not_equals(frame.contentDocument, firstDocument);
assertOpenIsEffective(firstDocument, 2);
});
frame.src = "/common/blank.html";
});
}, "document.open() removes the document's children (non-active document with an associated Window object; navigated away)");
test(t => {
const doc = document.implementation.createHTMLDocument();
assertOpenIsEffective(doc, 2);
}, "document.open() removes the document's children (non-active document without an associated Window object; createHTMLDocument)");
test(t => {
const doc = new DOMParser().parseFromString("", "text/html");
assertOpenIsEffective(doc, 1);
}, "document.open() removes the document's children (non-active document without an associated Window object; DOMParser)");
async_test(t => {
const xhr = new XMLHttpRequest();
xhr.onload = t.step_func_done(() => {
assert_equals(xhr.status, 200);
assertOpenIsEffective(xhr.responseXML, 2);
});
xhr.responseType = "document";
xhr.open("GET", "resources/dummy.html");
xhr.send();
}, "document.open() removes the document's children (non-active document without an associated Window object; XMLHttpRequest)");
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