forked from mirrors/gecko-dev
37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
add_task(async function test() {
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await BrowserTestUtils.withNewTab("data:text/plain;charset=utf-8,1", async function(browser) {
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BrowserTestUtils.loadURI(browser, "data:text/plain;charset=utf-8,2");
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await BrowserTestUtils.browserLoaded(browser);
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BrowserTestUtils.loadURI(browser, "data:text/plain;charset=utf-8,3");
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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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function promiseGetIndex(browser) {
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return ContentTask.spawn(browser, null, function() {
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let shistory = docShell.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsISHistory);
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return shistory.index;
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});
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}
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let duplicate = async function(delta, msg, cb) {
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var startIndex = await promiseGetIndex(gBrowser.selectedBrowser);
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duplicateTabIn(gBrowser.selectedTab, "tab", delta);
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let tab = gBrowser.selectedTab;
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await BrowserTestUtils.waitForEvent(tab, "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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