1 files changed, 53 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_drag_outside_palette.js b/browser/components/customizableui/test/browser_drag_outside_palette.js
new file mode 100644
index 0000000000..2785a08896
--- /dev/null
+++ b/browser/components/customizableui/test/browser_drag_outside_palette.js
@@ -0,0 +1,53 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check that moving items from the toolbar or panel to the palette by
+ * dropping on the panel container (not inside the visible panel) works.
+ */
+add_task(async function () {
+  await startCustomizing();
+  let panelContainer = document.getElementById("customization-panel-container");
+  // Try dragging an item from the navbar:
+  let stopReloadButton = document.getElementById("stop-reload-button");
+  let oldNavbarPlacements = CustomizableUI.getWidgetIdsInArea("nav-bar");
+  simulateItemDrag(stopReloadButton, panelContainer);
+  assertAreaPlacements(
+    CustomizableUI.AREA_NAVBAR,
+    oldNavbarPlacements.filter(w => w != "stop-reload-button")
+  );
+  ok(
+    stopReloadButton.closest("#customization-palette"),
+    "Button should be in the palette"
+  );
+
+  // Put it in the panel and try again from there:
+  let panelHolder = document.getElementById("customization-panelHolder");
+  simulateItemDrag(stopReloadButton, panelHolder);
+  assertAreaPlacements(CustomizableUI.AREA_FIXED_OVERFLOW_PANEL, [
+    "stop-reload-button",
+  ]);
+
+  simulateItemDrag(stopReloadButton, panelContainer);
+  assertAreaPlacements(CustomizableUI.AREA_FIXED_OVERFLOW_PANEL, []);
+
+  ok(
+    stopReloadButton.closest("#customization-palette"),
+    "Button should be in the palette"
+  );
+
+  // Check we can't move non-removable items like this:
+  let urlbar = document.getElementById("urlbar-container");
+  simulateItemDrag(urlbar, panelContainer);
+  assertAreaPlacements(
+    CustomizableUI.AREA_NAVBAR,
+    oldNavbarPlacements.filter(w => w != "stop-reload-button")
+  );
+});
+
+registerCleanupFunction(async function () {
+  await gCustomizeMode.reset();
+  await endCustomizing();
+});