diff -r 000000000000 -r 6474c204b198 browser/devtools/webconsole/test/browser_webconsole_bug_585991_autocomplete_popup.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webconsole/test/browser_webconsole_bug_585991_autocomplete_popup.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,95 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const TEST_URI = "data:text/html;charset=utf-8,<p>bug 585991 - autocomplete popup test";
+
+function test() {
+  addTab(TEST_URI);
+  browser.addEventListener("load", function onLoad() {
+    browser.removeEventListener("load", onLoad, true);
+    openConsole(null, consoleOpened);
+  }, true);
+}
+
+function consoleOpened(HUD) {
+  let items = [
+    {label: "item0", value: "value0"},
+    {label: "item1", value: "value1"},
+    {label: "item2", value: "value2"},
+  ];
+
+  let popup = HUD.jsterm.autocompletePopup;
+
+  ok(!popup.isOpen, "popup is not open");
+
+  popup._panel.addEventListener("popupshown", function() {
+    popup._panel.removeEventListener("popupshown", arguments.callee, false);
+
+    ok(popup.isOpen, "popup is open");
+
+    is(popup.itemCount, 0, "no items");
+
+    popup.setItems(items);
+
+    is(popup.itemCount, items.length, "items added");
+
+    let sameItems = popup.getItems();
+    is(sameItems.every(function(aItem, aIndex) {
+      return aItem === items[aIndex];
+    }), true, "getItems returns back the same items");
+
+    is(popup.selectedIndex, 2,
+       "Index of the first item from bottom is selected.");
+    is(popup.selectedItem, items[2], "First item from bottom is selected");
+
+    popup.selectedIndex = 1;
+
+    is(popup.selectedIndex, 1, "index 1 is selected");
+    is(popup.selectedItem, items[1], "item1 is selected");
+
+    popup.selectedItem = items[2];
+
+    is(popup.selectedIndex, 2, "index 2 is selected");
+    is(popup.selectedItem, items[2], "item2 is selected");
+
+    is(popup.selectPreviousItem(), items[1], "selectPreviousItem() works");
+
+    is(popup.selectedIndex, 1, "index 1 is selected");
+    is(popup.selectedItem, items[1], "item1 is selected");
+
+    is(popup.selectNextItem(), items[2], "selectPreviousItem() works");
+
+    is(popup.selectedIndex, 2, "index 2 is selected");
+    is(popup.selectedItem, items[2], "item2 is selected");
+
+    ok(popup.selectNextItem(), "selectPreviousItem() works");
+
+    is(popup.selectedIndex, 0, "index 0 is selected");
+    is(popup.selectedItem, items[0], "item0 is selected");
+
+    items.push({label: "label3", value: "value3"});
+    popup.appendItem(items[3]);
+
+    is(popup.itemCount, items.length, "item3 appended");
+
+    popup.selectedIndex = 3;
+    is(popup.selectedItem, items[3], "item3 is selected");
+
+    popup.removeItem(items[2]);
+
+    is(popup.selectedIndex, 2, "index2 is selected");
+    is(popup.selectedItem, items[3], "item3 is still selected");
+    is(popup.itemCount, items.length - 1, "item2 removed");
+
+    popup.clearItems();
+    is(popup.itemCount, 0, "items cleared");
+
+    popup.hidePopup();
+    finishTest();
+  }, false);
+
+  popup.openPopup();
+}
+