1 files changed, 59 insertions, 0 deletions
diff --git a/testing/web-platform/tests/close-watcher/frame-removal.html b/testing/web-platform/tests/close-watcher/frame-removal.html
new file mode 100644
index 0000000000..b8bbac04f9
--- /dev/null
+++ b/testing/web-platform/tests/close-watcher/frame-removal.html
@@ -0,0 +1,59 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+<script>
+promise_test(async (t) => {
+  const i = await setupIframe();
+  const watcher = new i.contentWindow.CloseWatcher();
+  watcher.oncancel = () => i.remove();
+  watcher.onclose = () => t.unreached_func("close event must not fire");
+
+  watcher.close();
+}, "detaching the iframe during the cancel event");
+
+promise_test(async (t) => {
+  const i = await setupIframe();
+  const watcher = new i.contentWindow.CloseWatcher();
+  watcher.onclose = () => i.remove();
+
+  watcher.close();
+}, "detaching the iframe during the close event");
+
+promise_test(async (t) => {
+  const i = await setupIframe();
+  const watcher = new i.contentWindow.CloseWatcher();
+  i.remove();
+
+  watcher.destroy();
+}, "detaching the iframe then calling destroy()");
+
+promise_test(async (t) => {
+  const i = await setupIframe();
+  const watcher = new i.contentWindow.CloseWatcher();
+  watcher.oncancel = () => t.unreached_func("cancel event must not fire");
+  watcher.onclose = () => t.unreached_func("close event must not fire");
+  i.remove();
+
+  watcher.close();
+}, "detaching the iframe then calling close()");
+
+promise_test(async (t) => {
+  const i = await setupIframe();
+  const iCloseWatcher = i.contentWindow.CloseWatcher;
+  const iDOMException = i.contentWindow.DOMException;
+  i.remove();
+
+  assert_throws_dom("InvalidStateError", iDOMException, () => new iCloseWatcher());
+}, "detaching the iframe then constructing a CloseWatcher");
+
+function setupIframe() {
+  return new Promise(resolve => {
+    const i = document.createElement("iframe");
+    i.onload = () => resolve(i);
+    i.src = "/common/blank.html";
+    document.body.append(i);
+  });
+}
+</script>