sync: Gracefully handle very early shutdown

sync/engine/syncer_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Syncer unit tests. Unfortunately a lot of these tests
 // are outdated and need to be reworked and updated.
 
 #include <algorithm>
 #include <limits>
 #include <list>
@@ skipping 12 matching lines @@
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "sync/engine/get_commit_ids_command.h"
 #include "sync/engine/net/server_connection_manager.h"
 #include "sync/engine/process_updates_command.h"
 #include "sync/engine/sync_scheduler_impl.h"
 #include "sync/engine/syncer.h"
 #include "sync/engine/syncer_proto_util.h"
 #include "sync/engine/traffic_recorder.h"
+#include "sync/internal_api/public/base/cancelation_signal.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/protocol/bookmark_specifics.pb.h"
 #include "sync/protocol/nigori_specifics.pb.h"
 #include "sync/protocol/preference_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/sync_session_context.h"
 #include "sync/syncable/mutable_entry.h"
 #include "sync/syncable/nigori_util.h"
 #include "sync/syncable/syncable_delete_journal.h"
@@ skipping 178 matching lines @@
 
     context_.reset(
         new SyncSessionContext(
             mock_server_.get(), directory(), workers,
             extensions_activity_,
             listeners, NULL, &traffic_recorder_,
             true,  // enable keystore encryption
             false,  // force enable pre-commit GU avoidance experiment
             "fake_invalidator_client_id"));
     context_->set_routing_info(routing_info);
-    syncer_ = new Syncer();
+    syncer_ = new Syncer(&cancelation_signal_);
 
     syncable::ReadTransaction trans(FROM_HERE, directory());
     syncable::Directory::Metahandles children;
     directory()->GetChildHandlesById(&trans, trans.root_id(), &children);
     ASSERT_EQ(0u, children.size());
     saw_syncer_event_ = false;
     root_id_ = TestIdFactory::root();
     parent_id_ = ids_.MakeServer("parent id");
     child_id_ = ids_.MakeServer("child id");
     directory()->set_store_birthday(mock_server_->store_birthday());
@@ skipping 302 matching lines @@
   syncable::Id root_id_;
   syncable::Id parent_id_;
   syncable::Id child_id_;
 
   TestIdFactory ids_;
 
   TestDirectorySetterUpper dir_maker_;
   FakeEncryptor encryptor_;
   scoped_refptr<ExtensionsActivity> extensions_activity_;
   scoped_ptr<MockConnectionManager> mock_server_;
+  CancelationSignal cancelation_signal_;
 
   Syncer* syncer_;
 
   scoped_ptr<SyncSession> session_;
   scoped_ptr<SyncSessionContext> context_;
   bool saw_syncer_event_;
   base::TimeDelta last_short_poll_interval_received_;
   base::TimeDelta last_long_poll_interval_received_;
   base::TimeDelta last_sessions_commit_delay_seconds_;
   int last_client_invalidation_hint_buffer_size_;
@@ skipping 4242 matching lines @@
     EXPECT_EQ("xyz", final_monitor_records["xyz"].extension_id);
     EXPECT_EQ(2049U, final_monitor_records["ABC"].bookmark_write_count);
     EXPECT_EQ(4U,    final_monitor_records["xyz"].bookmark_write_count);
   } else {
     EXPECT_TRUE(final_monitor_records.empty())
         << "Should not restore records after successful bookmark commit.";
   }
 }
 
 }  // namespace syncer