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/* Any copyright is dedicated to the Public Domain.
const PREF_WARN_ON_CLOSE = "browser.tabs.warnOnCloseOtherTabs";
add_task(async function setPref() {
await SpecialPowers.pushPrefEnv({
set: [[PREF_WARN_ON_CLOSE, false]],
});
});
add_task(async function replaceEmptyTabs() {
const win = await BrowserTestUtils.openNewBrowserWindow();
const tabbrowser = win.gBrowser;
ok(
tabbrowser.tabs.length == 1 && tabbrowser.tabs[0].isEmpty,
"One blank tab should be opened."
);
let blankTab = tabbrowser.tabs[0];
await BrowserTestUtils.openNewForegroundTab(
tabbrowser,
);
await BrowserTestUtils.openNewForegroundTab(
tabbrowser,
);
await BrowserTestUtils.openNewForegroundTab(
tabbrowser,
);
is(tabbrowser.tabs.length, 4, "There should be 4 tabs opened.");
tabbrowser.removeAllTabsBut(blankTab);
await TestUtils.waitForCondition(
() =>
SessionStore.getLastClosedTabCount(win) == 3 &&
tabbrowser.tabs.length == 1,
"wait for the tabs to close in SessionStore"
);
is(
SessionStore.getLastClosedTabCount(win),
3,
"SessionStore should know how many tabs were just closed"
);
is(tabbrowser.selectedTab, blankTab, "The blank tab should be selected.");
win.undoCloseTab();
await TestUtils.waitForCondition(
() => tabbrowser.tabs.length == 3,
"wait for the tabs to reopen"
);
is(
SessionStore.getLastClosedTabCount(win),
SessionStore.getClosedTabCountForWindow(win) ? 1 : 0,
"LastClosedTabCount should be reset"
);
ok(
!tabbrowser.tabs.includes(blankTab),
"The blank tab should have been replaced."
);
// We can't (at the time of writing) check tab order.
// Cleanup
await BrowserTestUtils.closeWindow(win);
});