1 files changed, 46 insertions, 0 deletions
diff --git a/testing/web-platform/tests/subapps/remove-error.tentative.https.html b/testing/web-platform/tests/subapps/remove-error.tentative.https.html
new file mode 100644
index 0000000000..05305c4faf
--- /dev/null
+++ b/testing/web-platform/tests/subapps/remove-error.tentative.https.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<title>Sub Apps: Error cases for remove()</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/subapps-helpers.js"></script>
+
+<body></body>
+
+<script>
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  document.body.appendChild(iframe);
+
+  const iframeNavigator = iframe.contentWindow.navigator;
+  const iframeDOMException = iframe.contentWindow.DOMException;
+
+  // Detach the frame.
+  iframe.remove();
+
+  // At this point the iframe is detached and unloaded, and its execution
+  // context is gone.
+  await promise_rejects_dom(t, 'NotFoundError', iframeDOMException, iframeNavigator.subApps.remove('sub-app-id'));
+}, "The object is no longer associated to a document.");
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  document.body.appendChild(iframe);
+
+  const iframeNavigator = iframe.contentWindow.navigator;
+  const iframeDOMException = iframe.contentWindow.DOMException;
+  t.add_cleanup(() => iframe.remove());
+
+  await promise_rejects_dom(t, 'InvalidStateError', iframeDOMException, iframeNavigator.subApps.remove('sub-app-id'));
+}, "API is only supported in top-level browsing contexts.");
+
+promise_test(async t => {
+  t.add_cleanup(async () => {
+      await mockSubAppsService.reset();
+      mockSubAppsService = null;
+  });
+  await createMockSubAppsService(Status.FAILURE, [], []);
+  return promise_rejects_dom(t, 'OperationError', navigator.subApps.remove('sub-app-id'));
+}, 'Remove call failed.');
+
+</script>
+\ No newline at end of file