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Test Info:

/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* Test the sidebar is updated correctly when network runtimes are added/removed.
*/
add_task(async function () {
registerCleanupFunction(() => {
Services.prefs.clearUserPref("devtools.aboutdebugging.network-locations");
});
const { document, tab } = await openAboutDebugging();
const noDevicesElement = document.querySelector(".qa-sidebar-no-devices");
ok(noDevicesElement, "Sidebar shows the 'no devices' element");
info("Add a network location");
networkLocationsModule.addNetworkLocation("localhost:6080");
info("Wait for 'no devices' element to disappear");
waitUntil(() => !document.querySelector(".qa-sidebar-no-devices"));
ok(
findSidebarItemByText("localhost:6080", document),
"Found a sidebar item for localhost:6080"
);
info("Remove the network location");
networkLocationsModule.removeNetworkLocation("localhost:6080");
info("Wait for 'no devices' element to reappear");
waitUntil(() => document.querySelector(".qa-sidebar-no-devices"));
ok(
!findSidebarItemByText("localhost:6080", document),
"Sidebar item for localhost:6080 removed"
);
await removeTab(tab);
});