diff -r 000000000000 -r 6474c204b198 services/sync/tests/unit/test_tab_store.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/services/sync/tests/unit/test_tab_store.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,102 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Cu.import("resource://services-sync/engines/tabs.js");
+Cu.import("resource://services-sync/service.js");
+Cu.import("resource://services-sync/util.js");
+Cu.import("resource://testing-common/services-common/utils.js");
+
+function getMockStore() {
+  let engine = new TabEngine(Service);
+  let store = engine._store;
+  store.getTabState = mockGetTabState;
+  store.shouldSkipWindow = mockShouldSkipWindow;
+  return store;
+}
+
+function test_create() {
+  let store = new TabEngine(Service)._store;
+
+  _("Create a first record");
+  let rec = {id: "id1",
+             clientName: "clientName1",
+             cleartext: "cleartext1",
+             modified: 1000};
+  store.applyIncoming(rec);
+  do_check_eq(store._remoteClients["id1"], "cleartext1");
+  do_check_eq(Svc.Prefs.get("notifyTabState"), 1);
+
+  _("Create a second record");
+  let rec = {id: "id2",
+             clientName: "clientName2",
+             cleartext: "cleartext2",
+             modified: 2000};
+  store.applyIncoming(rec);
+  do_check_eq(store._remoteClients["id2"], "cleartext2");
+  do_check_eq(Svc.Prefs.get("notifyTabState"), 0);
+
+  _("Create a third record");
+  let rec = {id: "id3",
+             clientName: "clientName3",
+             cleartext: "cleartext3",
+             modified: 3000};
+  store.applyIncoming(rec);
+  do_check_eq(store._remoteClients["id3"], "cleartext3");
+  do_check_eq(Svc.Prefs.get("notifyTabState"), 0);
+
+  // reset the notifyTabState
+  Svc.Prefs.reset("notifyTabState");
+}
+
+function test_getAllTabs() {
+  let store = getMockStore();
+  let tabs;
+
+  store.getWindowEnumerator = mockGetWindowEnumerator.bind(this, "http://foo.com", 1, 1);
+
+  _("Get all tabs.");
+  tabs = store.getAllTabs();
+  _("Tabs: " + JSON.stringify(tabs));
+  do_check_eq(tabs.length, 1);
+  do_check_eq(tabs[0].title, "title");
+  do_check_eq(tabs[0].urlHistory.length, 1);
+  do_check_eq(tabs[0].urlHistory[0], ["http://foo.com"]);
+  do_check_eq(tabs[0].icon, "image");
+  do_check_eq(tabs[0].lastUsed, 1);
+
+  _("Get all tabs, and check that filtering works.");
+  store.getWindowEnumerator = mockGetWindowEnumerator.bind(this, "about:foo", 1, 1);
+  tabs = store.getAllTabs(true);
+  _("Filtered: " + JSON.stringify(tabs));
+  do_check_eq(tabs.length, 0);
+}
+
+function test_createRecord() {
+  let store = getMockStore();
+  let record;
+
+  store.getTabState = mockGetTabState;
+  store.shouldSkipWindow = mockShouldSkipWindow;
+  store.getWindowEnumerator = mockGetWindowEnumerator.bind(this, "http://foo.com", 1, 1);
+
+  let tabs = store.getAllTabs();
+  let tabsize = JSON.stringify(tabs[0]).length;
+  let numtabs = Math.ceil(20000./77.);
+
+  store.getWindowEnumerator = mockGetWindowEnumerator.bind(this, "http://foo.com", 1, 1);
+  record = store.createRecord("fake-guid");
+  do_check_true(record instanceof TabSetRecord);
+  do_check_eq(record.tabs.length, 1);
+
+  _("create a big record");
+  store.getWindowEnumerator = mockGetWindowEnumerator.bind(this, "http://foo.com", 1, numtabs);
+  record = store.createRecord("fake-guid");
+  do_check_true(record instanceof TabSetRecord);
+  do_check_eq(record.tabs.length, 256);
+}
+
+function run_test() {
+  test_create();
+  test_getAllTabs();
+  test_createRecord();
+}