50 lines
1.5 KiB
JavaScript
50 lines
1.5 KiB
JavaScript
add_task(async function test() {
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await BrowserTestUtils.withNewTab(
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"data:text/plain;charset=utf-8,1",
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async function (browser) {
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BrowserTestUtils.startLoadingURIString(
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browser,
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"data:text/plain;charset=utf-8,2"
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);
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await BrowserTestUtils.browserLoaded(browser);
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BrowserTestUtils.startLoadingURIString(
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browser,
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"data:text/plain;charset=utf-8,3"
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);
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await BrowserTestUtils.browserLoaded(browser);
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await duplicate(0, "maintained the original index");
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BrowserTestUtils.removeTab(gBrowser.selectedTab);
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await duplicate(-1, "went back");
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await duplicate(1, "went forward");
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BrowserTestUtils.removeTab(gBrowser.selectedTab);
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BrowserTestUtils.removeTab(gBrowser.selectedTab);
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}
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);
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});
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async function promiseGetIndex(browser) {
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if (!SpecialPowers.Services.appinfo.sessionHistoryInParent) {
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return SpecialPowers.spawn(browser, [], function () {
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let shistory =
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docShell.browsingContext.childSessionHistory.legacySHistory;
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return shistory.index;
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});
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}
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let shistory = browser.browsingContext.sessionHistory;
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return shistory.index;
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}
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let duplicate = async function (delta, msg) {
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var startIndex = await promiseGetIndex(gBrowser.selectedBrowser);
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duplicateTabIn(gBrowser.selectedTab, "tab", delta);
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await BrowserTestUtils.waitForEvent(gBrowser.tabContainer, "SSTabRestored");
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let endIndex = await promiseGetIndex(gBrowser.selectedBrowser);
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is(endIndex, startIndex + delta, msg);
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};
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