1 files changed, 57 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_autocomplete_popup_consecutive-show.js b/devtools/client/shared/test/browser_autocomplete_popup_consecutive-show.js
new file mode 100644
index 0000000000..1af2df3a1f
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+++ b/devtools/client/shared/test/browser_autocomplete_popup_consecutive-show.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that calling `showPopup` multiple time does not lead to invalid state.
+
+add_task(async function () {
+  const AutocompletePopup = require("resource://devtools/client/shared/autocomplete-popup.js");
+
+  info("Create an autocompletion popup");
+  const { doc } = await createHost();
+  const input = doc.createElement("input");
+  doc.body.appendChild(input);
+
+  const autocompleteOptions = {
+    position: "top",
+    autoSelect: true,
+    useXulWrapper: true,
+  };
+  const popup = new AutocompletePopup(doc, autocompleteOptions);
+  const items = [{ label: "a" }, { label: "b" }, { label: "c" }];
+  popup.setItems(items);
+
+  input.focus();
+
+  let onAllEventsReceived = waitForNEvents(popup, "popup-opened", 3);
+  // Note that the lack of `await` on those function calls are wanted.
+  popup.openPopup(input, 0, 0, 0);
+  popup.openPopup(input, 0, 0, 1);
+  popup.openPopup(input, 0, 0, 2);
+  await onAllEventsReceived;
+
+  ok(popup.isOpen, "popup is open");
+  is(
+    popup.selectedIndex,
+    2,
+    "Selected index matches the one that was set last when calling openPopup"
+  );
+
+  onAllEventsReceived = waitForNEvents(popup, "popup-opened", 2);
+  // Note that the lack of `await` on those function calls are wanted.
+  popup.openPopup(input, 0, 0, 1);
+  popup.openPopup(input);
+  await onAllEventsReceived;
+
+  ok(popup.isOpen, "popup is open");
+  is(
+    popup.selectedIndex,
+    0,
+    "First item is selected, as last call to openPopup did not specify an index and autoSelect is true"
+  );
+
+  const onPopupClose = popup.once("popup-closed");
+  popup.hidePopup();
+  await onPopupClose;
+});