1 files changed, 56 insertions, 0 deletions
diff --git a/browser/components/sessionstore/test/browser_701377.js b/browser/components/sessionstore/test/browser_701377.js
new file mode 100644
index 0000000000..3f07aea6bb
--- /dev/null
+++ b/browser/components/sessionstore/test/browser_701377.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var state = {
+  windows: [
+    {
+      tabs: [
+        {
+          entries: [
+            { url: "http://example.com#1", triggeringPrincipal_base64 },
+          ],
+        },
+        {
+          entries: [
+            { url: "http://example.com#2", triggeringPrincipal_base64 },
+          ],
+          hidden: true,
+        },
+      ],
+    },
+  ],
+};
+
+function test() {
+  waitForExplicitFinish();
+
+  newWindowWithState(state, function (aWindow) {
+    let tab = aWindow.gBrowser.tabs[1];
+    ok(tab.hidden, "the second tab is hidden");
+
+    let tabShown = false;
+    let tabShowCallback = () => (tabShown = true);
+    tab.addEventListener("TabShow", tabShowCallback);
+
+    let tabState = ss.getTabState(tab);
+    ss.setTabState(tab, tabState);
+
+    tab.removeEventListener("TabShow", tabShowCallback);
+    ok(tab.hidden && !tabShown, "tab remains hidden");
+
+    finish();
+  });
+}
+
+// ----------
+function newWindowWithState(aState, aCallback) {
+  let opts = "chrome,all,dialog=no,height=800,width=800";
+  let win = window.openDialog(AppConstants.BROWSER_CHROME_URL, "_blank", opts);
+
+  registerCleanupFunction(() => BrowserTestUtils.closeWindow(win));
+
+  whenWindowLoaded(win, function onWindowLoaded(aWin) {
+    ss.setWindowState(aWin, JSON.stringify(aState), true);
+    executeSoon(() => aCallback(aWin));
+  });
+}