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Test Info:

/* 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/. */
"use strict";
const kTestToolbarId = "test-empty-drag";
// Attempting to drag an item to an empty container should work.
add_task(async function () {
await createToolbarWithPlacements(kTestToolbarId, []);
await startCustomizing();
let libraryButton = document.getElementById("library-button");
let customToolbar = document.getElementById(kTestToolbarId);
simulateItemDrag(libraryButton, customToolbar);
assertAreaPlacements(kTestToolbarId, ["library-button"]);
ok(
libraryButton.parentNode &&
libraryButton.parentNode.parentNode == customToolbar,
"Button should really be in toolbar"
);
await endCustomizing();
removeCustomToolbars();
});
add_task(async function asyncCleanup() {
await endCustomizing();
await resetCustomization();
});