1 files changed, 27 insertions, 0 deletions
diff --git a/toolkit/content/tests/browser/datetime/browser_datetime_toplevel.js b/toolkit/content/tests/browser/datetime/browser_datetime_toplevel.js
new file mode 100644
index 0000000000..2e97e4d2da
--- /dev/null
+++ b/toolkit/content/tests/browser/datetime/browser_datetime_toplevel.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+ * https://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function () {
+  let input = document.createElement("input");
+  input.type = "date";
+  registerCleanupFunction(() => input.remove());
+  document.body.appendChild(input);
+
+  let shown = BrowserTestUtils.waitForDateTimePickerPanelShown(window);
+
+  const shadowRoot = SpecialPowers.wrap(input).openOrClosedShadowRoot;
+
+  EventUtils.synthesizeMouseAtCenter(
+    shadowRoot.getElementById("calendar-button"),
+    {}
+  );
+
+  let popup = await shown;
+  ok(!!popup, "Should've shown the popup");
+
+  let hidden = BrowserTestUtils.waitForPopupEvent(popup, "hidden");
+  popup.hidePopup();
+
+  await hidden;
+  popup.remove();
+});