1 files changed, 133 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_1003588_no_specials_in_panel.js b/browser/components/customizableui/test/browser_1003588_no_specials_in_panel.js
new file mode 100644
index 0000000000..5aa2860827
--- /dev/null
+++ b/browser/components/customizableui/test/browser_1003588_no_specials_in_panel.js
@@ -0,0 +1,133 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+function simulateItemDragAndEnd(aToDrag, aTarget) {
+  var ds = Cc["@mozilla.org/widget/dragservice;1"].getService(
+    Ci.nsIDragService
+  );
+
+  ds.startDragSessionForTests(
+    Ci.nsIDragService.DRAGDROP_ACTION_MOVE |
+      Ci.nsIDragService.DRAGDROP_ACTION_COPY |
+      Ci.nsIDragService.DRAGDROP_ACTION_LINK
+  );
+  try {
+    var [result, dataTransfer] = EventUtils.synthesizeDragOver(
+      aToDrag.parentNode,
+      aTarget
+    );
+    EventUtils.synthesizeDropAfterDragOver(result, dataTransfer, aTarget);
+    // Send dragend to move dragging item back to initial place.
+    EventUtils.sendDragEvent(
+      { type: "dragend", dataTransfer },
+      aToDrag.parentNode
+    );
+  } finally {
+    ds.endDragSession(true);
+  }
+}
+
+add_task(async function checkNoAddingToPanel() {
+  let area = CustomizableUI.AREA_FIXED_OVERFLOW_PANEL;
+  let previousPlacements = getAreaWidgetIds(area);
+  CustomizableUI.addWidgetToArea("separator", area);
+  CustomizableUI.addWidgetToArea("spring", area);
+  CustomizableUI.addWidgetToArea("spacer", area);
+  assertAreaPlacements(area, previousPlacements);
+
+  let oldNumberOfItems = previousPlacements.length;
+  if (getAreaWidgetIds(area).length != oldNumberOfItems) {
+    CustomizableUI.reset();
+  }
+});
+
+add_task(async function checkAddingToToolbar() {
+  let area = CustomizableUI.AREA_NAVBAR;
+  let previousPlacements = getAreaWidgetIds(area);
+  CustomizableUI.addWidgetToArea("separator", area);
+  CustomizableUI.addWidgetToArea("spring", area);
+  CustomizableUI.addWidgetToArea("spacer", area);
+  let expectedPlacements = [...previousPlacements].concat([
+    /separator/,
+    /spring/,
+    /spacer/,
+  ]);
+  assertAreaPlacements(area, expectedPlacements);
+
+  let newlyAddedElements = getAreaWidgetIds(area).slice(-3);
+  while (newlyAddedElements.length) {
+    CustomizableUI.removeWidgetFromArea(newlyAddedElements.shift());
+  }
+
+  assertAreaPlacements(area, previousPlacements);
+
+  let oldNumberOfItems = previousPlacements.length;
+  if (getAreaWidgetIds(area).length != oldNumberOfItems) {
+    CustomizableUI.reset();
+  }
+});
+
+add_task(async function checkDragging() {
+  let startArea = CustomizableUI.AREA_TABSTRIP;
+  let targetArea = CustomizableUI.AREA_FIXED_OVERFLOW_PANEL;
+  let startingToolbarPlacements = getAreaWidgetIds(startArea);
+  let startingTargetPlacements = getAreaWidgetIds(targetArea);
+
+  CustomizableUI.addWidgetToArea("separator", startArea);
+  CustomizableUI.addWidgetToArea("spring", startArea);
+  CustomizableUI.addWidgetToArea("spacer", startArea);
+
+  let placementsWithSpecials = getAreaWidgetIds(startArea);
+  let elementsToMove = [];
+  for (let id of placementsWithSpecials) {
+    if (CustomizableUI.isSpecialWidget(id)) {
+      elementsToMove.push(id);
+    }
+  }
+  is(elementsToMove.length, 3, "Should have 3 elements to try and drag.");
+
+  await startCustomizing();
+  let existingSpecial = null;
+  existingSpecial =
+    gCustomizeMode.visiblePalette.querySelector("toolbarspring");
+  ok(
+    existingSpecial,
+    "Should have a flexible space in the palette by default in photon"
+  );
+  for (let id of elementsToMove) {
+    simulateItemDragAndEnd(
+      document.getElementById(id),
+      document.getElementById(targetArea)
+    );
+  }
+
+  assertAreaPlacements(startArea, placementsWithSpecials);
+  assertAreaPlacements(targetArea, startingTargetPlacements);
+
+  for (let id of elementsToMove) {
+    simulateItemDrag(
+      document.getElementById(id),
+      gCustomizeMode.visiblePalette
+    );
+  }
+
+  assertAreaPlacements(startArea, startingToolbarPlacements);
+  assertAreaPlacements(targetArea, startingTargetPlacements);
+
+  let allSpecials = gCustomizeMode.visiblePalette.querySelectorAll(
+    "toolbarspring,toolbarseparator,toolbarspacer"
+  );
+  allSpecials = [...allSpecials].filter(special => special != existingSpecial);
+  ok(
+    !allSpecials.length,
+    "No (new) specials should make it to the palette alive."
+  );
+  await endCustomizing();
+});
+
+add_task(async function asyncCleanup() {
+  await endCustomizing();
+  CustomizableUI.reset();
+});