[Sync] Fix auth error handling while the backend is initializing.

chrome/browser/sync/profile_sync_service_startup_unittest.cc

Index: chrome/browser/sync/profile_sync_service_startup_unittest.cc
diff --git a/chrome/browser/sync/profile_sync_service_startup_unittest.cc b/chrome/browser/sync/profile_sync_service_startup_unittest.cc
index 01c5e6f100d1cebc8710dc8cd1f67b53f6b54bf0..8c24a35f952b50374a6a4662ca9e814a1c16253a 100644
--- a/chrome/browser/sync/profile_sync_service_startup_unittest.cc
+++ b/chrome/browser/sync/profile_sync_service_startup_unittest.cc
@@ -235,6 +235,42 @@ TEST_F(ProfileSyncServiceStartupTest, StartNoCredentials) {
   EXPECT_TRUE(service_->ShouldPushChanges());
 }
 
+TEST_F(ProfileSyncServiceStartupTest, StartInvalidCredentials) {
+  DataTypeManagerMock* data_type_manager = SetUpDataTypeManager();
+  EXPECT_CALL(*data_type_manager, Configure(_, _)).Times(0);
+  TokenService* token_service = static_cast<TokenService*>(
+      TokenServiceFactory::GetInstance()->SetTestingFactoryAndUse(
+          profile_.get(), BuildFakeTokenService));
+  token_service->LoadTokensFromDB();
+
+  // Tell the backend to stall while downloading control types (simulating an
+  // auth error).
+  service_->fail_initial_download();
+
+  EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
+  service_->Initialize();
+  EXPECT_TRUE(service_->GetBackendForTest());
+  EXPECT_FALSE(service_->sync_initialized());
+  EXPECT_FALSE(service_->ShouldPushChanges());
+  Mock::VerifyAndClearExpectations(data_type_manager);
+
+  // Update the credentials, unstalling the backend.
+  EXPECT_CALL(*data_type_manager, Configure(_, _));
+  EXPECT_CALL(*data_type_manager, state()).
+      WillRepeatedly(Return(DataTypeManager::CONFIGURED));
+  EXPECT_CALL(*data_type_manager, Stop()).Times(1);
+  EXPECT_CALL(observer_, OnStateChanged()).Times(AnyNumber());
+  service_->SetSetupInProgress(true);
+  service_->signin()->StartSignIn("test_user", "", "", "");
+  token_service->IssueAuthTokenForTest(
+      GaiaConstants::kSyncService, "sync_token");
+  service_->SetSetupInProgress(false);
+  MessageLoop::current()->Run();
+
+  // Verify we successfully finish startup and configuration.
+  EXPECT_TRUE(service_->ShouldPushChanges());
+}
+
 TEST_F(ProfileSyncServiceStartupCrosTest, StartCrosNoCredentials) {
   EXPECT_CALL(*factory_mock(), CreateDataTypeManager(_, _, _, _)).Times(0);
   profile_->GetPrefs()->ClearPref(prefs::kSyncHasSetupCompleted);