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Test Info:

"use strict";
const PATH = getRootDirectory(gTestPath).replace(
);
const URL = PATH + "file_async_duplicate_tab.html";
add_task(async function test_duplicate() {
// Create new tab.
let tab = BrowserTestUtils.addTab(gBrowser, URL);
let browser = tab.linkedBrowser;
await promiseBrowserLoaded(browser);
// Flush to empty any queued update messages.
await TabStateFlusher.flush(browser);
// Click the link to navigate, this will add second shistory entry.
await SpecialPowers.spawn(browser, [], async function () {
return new Promise(resolve => {
docShell.chromeEventHandler.addEventListener(
"hashchange",
() => resolve(),
{ once: true, capture: true }
);
// Click the link.
content.document.querySelector("a").click();
});
});
// Duplicate the tab.
let tab2 = ss.duplicateTab(window, tab);
// Wait until the tab has fully restored.
await promiseTabRestored(tab2);
await TabStateFlusher.flush(tab2.linkedBrowser);
// There should be two history entries now.
let { entries } = JSON.parse(ss.getTabState(tab2));
is(entries.length, 2, "there are two shistory entries");
// Cleanup.
BrowserTestUtils.removeTab(tab2);
BrowserTestUtils.removeTab(tab);
});
add_task(async function test_duplicate_remove() {
// Create new tab.
let tab = BrowserTestUtils.addTab(gBrowser, URL);
let browser = tab.linkedBrowser;
await promiseBrowserLoaded(browser);
// Flush to empty any queued update messages.
await TabStateFlusher.flush(browser);
// Click the link to navigate, this will add second shistory entry.
await SpecialPowers.spawn(browser, [], async function () {
return new Promise(resolve => {
docShell.chromeEventHandler.addEventListener(
"hashchange",
() => resolve(),
{ once: true, capture: true }
);
// Click the link.
content.document.querySelector("a").click();
});
});
// Duplicate the tab.
let tab2 = ss.duplicateTab(window, tab);
// Before the duplication finished, remove the tab.
await Promise.all([
promiseRemoveTabAndSessionState(tab),
promiseTabRestored(tab2),
]);
await TabStateFlusher.flush(tab2.linkedBrowser);
// There should be two history entries now.
let { entries } = JSON.parse(ss.getTabState(tab2));
is(entries.length, 2, "there are two shistory entries");
// Cleanup.
BrowserTestUtils.removeTab(tab2);
});