1 files changed, 24 insertions, 0 deletions
diff --git a/browser/components/sessionstore/test/browser_aboutPrivateBrowsing.js b/browser/components/sessionstore/test/browser_aboutPrivateBrowsing.js
new file mode 100644
index 0000000000..8bb21620e4
--- /dev/null
+++ b/browser/components/sessionstore/test/browser_aboutPrivateBrowsing.js
@@ -0,0 +1,24 @@
+"use strict";
+
+// Tests that an about:privatebrowsing tab with no history will not
+// be saved into session store and thus, it will not show up in
+// Recently Closed Tabs.
+
+add_task(async function () {
+  let tab = BrowserTestUtils.addTab(gBrowser, "about:privatebrowsing");
+  let browser = tab.linkedBrowser;
+  await promiseBrowserLoaded(browser);
+
+  is(
+    gBrowser.browsers[1].currentURI.spec,
+    "about:privatebrowsing",
+    "we will be removing an about:privatebrowsing tab"
+  );
+
+  let r = `rand-${Math.random()}`;
+  ss.setCustomTabValue(tab, "foobar", r);
+
+  await promiseRemoveTabAndSessionState(tab);
+  let closedTabData = JSON.stringify(ss.getClosedTabDataForWindow(window));
+  ok(!closedTabData.includes(r), "tab not stored in _closedTabs");
+});