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-rw-r--r--browser/components/sessionstore/test/browser_replace_load.js56
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diff --git a/browser/components/sessionstore/test/browser_replace_load.js b/browser/components/sessionstore/test/browser_replace_load.js
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+"use strict";
+
+const STATE = {
+ entries: [{ url: "about:robots" }, { url: "about:mozilla" }],
+ selected: 2,
+};
+
+/**
+ * Bug 1100223. Calling browser.loadURI() while a tab is loading causes
+ * sessionstore to override the desired target URL. This test ensures that
+ * calling loadURI() on a pending tab causes the tab to no longer be marked
+ * as pending and correctly finish the instructed load while keeping the
+ * restored history around.
+ */
+add_task(async function () {
+ await testSwitchToTab("about:mozilla#fooobar", {
+ ignoreFragment: "whenComparingAndReplace",
+ });
+ await testSwitchToTab("about:mozilla?foo=bar", { replaceQueryString: true });
+});
+
+var testSwitchToTab = async function (url, options) {
+ // Create a background tab.
+ let tab = BrowserTestUtils.addTab(gBrowser, "about:blank");
+ let browser = tab.linkedBrowser;
+ await promiseBrowserLoaded(browser);
+
+ // The tab shouldn't be restored right away.
+ Services.prefs.setBoolPref("browser.sessionstore.restore_on_demand", true);
+
+ // Prepare the tab state.
+ let promise = promiseTabRestoring(tab);
+ ss.setTabState(tab, JSON.stringify(STATE));
+ ok(tab.hasAttribute("pending"), "tab is pending");
+ await promise;
+
+ options.triggeringPrincipal =
+ Services.scriptSecurityManager.getSystemPrincipal();
+
+ // Switch-to-tab with a similar URI.
+ switchToTabHavingURI(url, false, options);
+
+ // Tab should now restore
+ await promiseTabRestored(tab);
+ is(browser.currentURI.spec, url, "correct URL loaded");
+
+ // Check that we didn't lose any history entries.
+ await SpecialPowers.spawn(browser, [], async function () {
+ let webNavigation = docShell.QueryInterface(Ci.nsIWebNavigation);
+ let history = webNavigation.sessionHistory;
+ Assert.equal(history && history.count, 3, "three history entries");
+ });
+
+ // Cleanup.
+ gBrowser.removeTab(tab);
+};