1 files changed, 43 insertions, 0 deletions
diff --git a/browser/components/sessionstore/test/browser_628270.js b/browser/components/sessionstore/test/browser_628270.js
new file mode 100644
index 0000000000..195e362063
--- /dev/null
+++ b/browser/components/sessionstore/test/browser_628270.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+async function test() {
+  let assertNumberOfTabs = function (num, msg) {
+    is(gBrowser.tabs.length, num, msg);
+  };
+
+  let assertNumberOfVisibleTabs = function (num, msg) {
+    is(gBrowser.visibleTabs.length, num, msg);
+  };
+
+  waitForExplicitFinish();
+
+  // check prerequisites
+  assertNumberOfTabs(1, "we start off with one tab");
+
+  // setup
+  let tab = BrowserTestUtils.addTab(gBrowser, "about:mozilla");
+
+  await promiseBrowserLoaded(tab.linkedBrowser);
+
+  // hide the newly created tab
+  assertNumberOfVisibleTabs(2, "there are two visible tabs");
+  gBrowser.showOnlyTheseTabs([gBrowser.tabs[0]]);
+  assertNumberOfVisibleTabs(1, "there is one visible tab");
+  ok(tab.hidden, "newly created tab is now hidden");
+
+  // close and restore hidden tab
+  await promiseRemoveTabAndSessionState(tab);
+  tab = ss.undoCloseTab(window, 0);
+
+  // check that everything was restored correctly, clean up and finish
+  await promiseBrowserLoaded(tab.linkedBrowser);
+  is(
+    tab.linkedBrowser.currentURI.spec,
+    "about:mozilla",
+    "restored tab has correct url"
+  );
+
+  gBrowser.removeTab(tab);
+  finish();
+}