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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* This test exists because we use a <panelmultiview> element and it handles
* some of the height changes for us. We need to verify that the height is
* updated correctly if downloads are removed while the panel is hidden.
*/
add_task(async function test_height_reduced_after_removal() {
await SpecialPowers.pushPrefEnv({
set: [["browser.download.autohideButton", false]],
});
await promiseButtonShown("downloads-button");
// downloading two items since the download panel only shows up when at least one item is in it
await task_addDownloads([{ state: DownloadsCommon.DOWNLOAD_FINISHED }]);
await task_addDownloads([{ state: DownloadsCommon.DOWNLOAD_FINISHED }]);
await task_openPanel();
let panel = document.getElementById("downloadsPanel");
let heightBeforeRemoval = panel.getBoundingClientRect().height;
// We want to close the panel before we remove the download from the list.
DownloadsPanel.hidePanel();
await task_resetState();
// keep at least one item in the download list since the panel disabled when it is empty
await task_addDownloads([{ state: DownloadsCommon.DOWNLOAD_FINISHED }]);
await task_openPanel();
let heightAfterRemoval = panel.getBoundingClientRect().height;
Assert.greater(heightBeforeRemoval, heightAfterRemoval);
await task_resetState();
});