Sync FileSystem: Add simulated relaunch of DriveFileSyncService on its unit_tests

chrome/browser/sync_file_system/drive_file_sync_service_sync_unittest.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/browser/sync_file_system/drive_file_sync_service.h"
 
 #include <algorithm>
 
 #include "base/format_macros.h"
 #include "base/message_loop.h"
@@ skipping 13 matching lines @@
 
 namespace {
 
 const char kSyncRootResourceId[] = "sync_root_resource_id";
 const char kParentResourceId[] = "parent_resource_id";
 const char kAppId[] = "app-id";
 const char kAppOrigin[] = "chrome-extension://app-id";
 
 void DidInitialize(bool* done, SyncStatusCode status, bool created) {
   EXPECT_EQ(SYNC_STATUS_OK, status);
-  EXPECT_TRUE(created);
   *done = true;
 }
 
 void DidProcessRemoteChange(bool* done,
                             SyncStatusCode* status_out,
                             SyncStatusCode status,
                             const fileapi::FileSystemURL& url) {
   *status_out = status;
   *done = true;
 }
 
 }  // namespace
 
 class DriveFileSyncServiceSyncTest : public testing::Test {
  public:
   DriveFileSyncServiceSyncTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_),
         file_thread_(content::BrowserThread::FILE, &message_loop_),
         fake_sync_client_(NULL),
         fake_remote_processor_(NULL),
         metadata_store_(NULL),
         resource_count_(0) {
   }
 
   virtual ~DriveFileSyncServiceSyncTest() {
   }
 
   virtual void SetUp() OVERRIDE {
     RegisterSyncableFileSystem(DriveFileSyncService::kServiceName);
-
-    ASSERT_TRUE(base_dir_.CreateUniqueTempDir());
-
-    fake_sync_client_ = new FakeDriveFileSyncClient;
-    fake_remote_processor_.reset(new FakeRemoteChangeProcessor);
-
-    metadata_store_ = new DriveMetadataStore(
-        base_dir_.path(),
-        base::MessageLoopProxy::current());
-
-    bool done = false;
-    metadata_store_->Initialize(base::Bind(&DidInitialize, &done));
-    message_loop_.RunUntilIdle();
-    EXPECT_TRUE(done);
-
-    metadata_store_->SetSyncRootDirectory(kSyncRootResourceId);
-    metadata_store_->AddBatchSyncOrigin(GURL(kAppOrigin), kParentResourceId);
-    metadata_store_->MoveBatchSyncOriginToIncremental(GURL(kAppOrigin));
-
-    sync_service_ = DriveFileSyncService::CreateForTesting(
-        &profile_,
-        base_dir_.path(),
-        scoped_ptr<DriveFileSyncClientInterface>(fake_sync_client_),
-        scoped_ptr<DriveMetadataStore>(metadata_store_)).Pass();
   }
 
   virtual void TearDown() OVERRIDE {
     RevokeSyncableFileSystem(DriveFileSyncService::kServiceName);
   }
 
  protected:
   struct SyncEvent {
     std::string description;
     base::Closure callback;
@@ skipping 12 matching lines @@
                    base::Unretained(this), title));
   }
 
   SyncEvent CreateRemoteFileDeleteEvent(const std::string& title) {
     return SyncEvent(
         "SyncEvent: Delete remote file [" + title + "]",
         base::Bind(&DriveFileSyncServiceSyncTest::DeleteResource,
                    base::Unretained(this), title));
   }
 
+  SyncEvent CreateRelaunchEvent() {
+    return SyncEvent(
+        "SyncEvent: Relaunch service",
+        base::Bind(&DriveFileSyncServiceSyncTest::RelaunchService,
+                   base::Unretained(this)));
+  }
+
   SyncEvent CreateFetchEvent() {
     return SyncEvent(
         "SyncEvent: Fetch remote changes",
         base::Bind(&DriveFileSyncServiceSyncTest::FetchRemoteChange,
                    base::Unretained(this)));
   }
 
   SyncEvent CreateProcessRemoteChangeEvent() {
     return SyncEvent(
         "SyncEvent: Process remote change",
         base::Bind(
             base::IgnoreResult(
                 &DriveFileSyncServiceSyncTest::ProcessRemoteChange),
             base::Unretained(this)));
   }
 
   template <size_t array_size>
   std::vector<SyncEvent> CreateTestCase(const SyncEvent (&events)[array_size]) {
     return std::vector<SyncEvent>(events, events + array_size);
   }
 
   void ShuffleTestCase(std::vector<SyncEvent>* events) {
     std::random_shuffle(events->begin(), events->end(), base::RandGenerator);
   }
 
   void RunTest(const std::vector<SyncEvent>& events) {
+    SetUpForTestCase();
+
     typedef std::vector<SyncEvent>::const_iterator iterator;
     std::ostringstream out;
+    out << '\n';
     for (iterator itr = events.begin(); itr != events.end(); ++itr)
       out << itr->description << '\n';
     SCOPED_TRACE(out.str());
 
     for (iterator itr = events.begin(); itr != events.end(); ++itr)
       itr->callback.Run();
 
     FetchRemoteChange();
     while (ProcessRemoteChange()) {}
 
     VerifyResult();
+    TearDownForTestCase();
   }
 
  private:
+  void SetUpForTestCase() {
+    ASSERT_TRUE(base_dir_.CreateUniqueTempDir());
+
+    fake_sync_client_ = new FakeDriveFileSyncClient;
+    fake_remote_processor_.reset(new FakeRemoteChangeProcessor);
+
+    metadata_store_ = new DriveMetadataStore(
+        base_dir_.path(),
+        base::MessageLoopProxy::current());
+
+    bool done = false;
+    metadata_store_->Initialize(base::Bind(&DidInitialize, &done));
+    message_loop_.RunUntilIdle();
+    EXPECT_TRUE(done);
+
+    metadata_store_->SetSyncRootDirectory(kSyncRootResourceId);
+    metadata_store_->AddBatchSyncOrigin(GURL(kAppOrigin), kParentResourceId);
+    metadata_store_->MoveBatchSyncOriginToIncremental(GURL(kAppOrigin));
+
+    sync_service_ = DriveFileSyncService::CreateForTesting(
+        &profile_,
+        base_dir_.path(),
+        scoped_ptr<DriveFileSyncClientInterface>(fake_sync_client_),
+        scoped_ptr<DriveMetadataStore>(metadata_store_)).Pass();
+  }
+
+  void TearDownForTestCase() {
+    metadata_store_ = NULL;
+    fake_sync_client_ = NULL;
+    sync_service_.reset();
+    fake_remote_processor_.reset();
+    ASSERT_TRUE(base_dir_.Delete());
+  }
+
   void AddOrUpdateResource(const std::string& title) {
     typedef ResourceIdByTitle::iterator iterator;
     std::pair<iterator, bool> inserted =
         resources_.insert(std::make_pair(title, std::string()));
     if (inserted.second)
       inserted.first->second = StringPrintf("%" PRId64, ++resource_count_);
     std::string resource_id = inserted.first->second;
 
     fake_sync_client_->PushRemoteChange(
         kParentResourceId, kAppId, title, resource_id,
         StringPrintf("%" PRIx64, base::RandUint64()),
         false /* deleted */);
     message_loop_.RunUntilIdle();
   }
 
   void DeleteResource(const std::string& title) {
     ResourceIdByTitle::iterator found = resources_.find(title);
     if (found == resources_.end())
       return;
     std::string resource_id = found->second;
     resources_.erase(found);
     fake_sync_client_->PushRemoteChange(
         kParentResourceId, kAppId,
         title, resource_id, std::string(), true /* deleted */);
     message_loop_.RunUntilIdle();
   }
 
+  void RelaunchService() {
+    metadata_store_ = NULL;
+    scoped_ptr<DriveFileSyncClientInterface> sync_client =
+        DriveFileSyncService::DestroyAndPassSyncClientForTesting(
+            sync_service_.Pass());
+    message_loop_.RunUntilIdle();
+
+    metadata_store_ = new DriveMetadataStore(
+        base_dir_.path(),
+        base::MessageLoopProxy::current());
+
+    bool done = false;
+    metadata_store_->Initialize(base::Bind(&DidInitialize, &done));
+    message_loop_.RunUntilIdle();
+    EXPECT_TRUE(done);
+
+    sync_service_ = DriveFileSyncService::CreateForTesting(
+        &profile_,
+        base_dir_.path(),
+        sync_client.Pass(),
+        scoped_ptr<DriveMetadataStore>(metadata_store_)).Pass();
+  }
+
   void FetchRemoteChange() {
     sync_service_->may_have_unfetched_changes_ = true;
     sync_service_->MaybeStartFetchChanges();
     message_loop_.RunUntilIdle();
   }
 
   bool ProcessRemoteChange() {
     bool done = false;
     SyncStatusCode status = SYNC_STATUS_UNKNOWN;
     sync_service_->ProcessRemoteChange(
         fake_remote_processor_.get(),
         base::Bind(&DidProcessRemoteChange, &done, &status));
     message_loop_.RunUntilIdle();
     EXPECT_TRUE(done);
-    return status == SYNC_STATUS_OK;
+    return status != SYNC_STATUS_NO_CHANGE_TO_SYNC;
   }
 
 
   void VerifyResult() {
     typedef FakeDriveFileSyncClient::RemoteResourceByResourceId
         RemoteResourceMap;
     typedef FakeDriveFileSyncClient::RemoteResource RemoteResource;
     typedef FakeRemoteChangeProcessor::URLToFileChangesMap
         AppliedRemoteChangeMap;
 
@@ skipping 43 matching lines @@
     }
   }
 
   MessageLoop message_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
 
   TestingProfile profile_;
   base::ScopedTempDir base_dir_;
 
-  FakeDriveFileSyncClient* fake_sync_client_;
+  FakeDriveFileSyncClient* fake_sync_client_;  // Owned by |sync_service_|.
   scoped_ptr<FakeRemoteChangeProcessor> fake_remote_processor_;
-  DriveMetadataStore* metadata_store_;
+  DriveMetadataStore* metadata_store_;  // Owned by |sync_service_|.
 
   scoped_ptr<DriveFileSyncService> sync_service_;
 
   typedef std::map<std::string, std::string> ResourceIdByTitle;
   ResourceIdByTitle resources_;
   int64 resource_count_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveFileSyncServiceSyncTest);
 };
 
 TEST_F(DriveFileSyncServiceSyncTest, AddFileTest) {
   std::string kFile1 = "file title 1";
   SyncEvent sync_event[] = {
     CreateRemoteFileAddOrUpdateEvent(kFile1),
   };
 
   RunTest(CreateTestCase(sync_event));
 }
 
 TEST_F(DriveFileSyncServiceSyncTest, UpdateFileTest) {
   std::string kFile1 = "file title 1";
   SyncEvent sync_event[] = {
     CreateRemoteFileAddOrUpdateEvent(kFile1),
     CreateRemoteFileAddOrUpdateEvent(kFile1),
   };
 
   RunTest(CreateTestCase(sync_event));
 }
 
-
 TEST_F(DriveFileSyncServiceSyncTest, DeleteFileTest) {
   std::string kFile1 = "file title 1";
   SyncEvent sync_event[] = {
     CreateRemoteFileAddOrUpdateEvent(kFile1),
+    CreateFetchEvent(),
+    CreateProcessRemoteChangeEvent(),
     CreateRemoteFileDeleteEvent(kFile1),
   };
 
   RunTest(CreateTestCase(sync_event));
 }
 
+TEST_F(DriveFileSyncServiceSyncTest, RelaunchTest) {
+  SyncEvent sync_event[] = {
+    CreateRelaunchEvent(),
+  };
+
+  RunTest(CreateTestCase(sync_event));
+}
+
+TEST_F(DriveFileSyncServiceSyncTest, SquashedFileAddTest) {
+  std::string kFile1 = "file title 1";
+  SyncEvent sync_event[] = {
+    CreateRemoteFileAddOrUpdateEvent(kFile1),
+    CreateFetchEvent(),
+    CreateRemoteFileDeleteEvent(kFile1),
+  };
+  RunTest(CreateTestCase(sync_event));
+}
+
 }  // namespace sync_file_system