Make ProtoDatabase properly handle failed Init

components/leveldb_proto/proto_database_impl_unittest.cc

 // Copyright 2014 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 "components/leveldb_proto/proto_database_impl.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "components/leveldb_proto/leveldb_database.h"
 #include "components/leveldb_proto/testing/proto/test.pb.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/leveldatabase/src/include/leveldb/options.h"
 
 using base::MessageLoop;
 using base::ScopedTempDir;
 using testing::Invoke;
 using testing::Return;
 using testing::_;
 
 namespace leveldb_proto {
 
 namespace {
@@ skipping 359 matching lines @@
 }
 
 TEST(ProtoDatabaseImplLevelDBTest, TestDBSaveAndLoad) {
   TestLevelDBSaveAndLoad(false);
 }
 
 TEST(ProtoDatabaseImplLevelDBTest, TestDBCloseAndReopen) {
   TestLevelDBSaveAndLoad(true);
 }
 
+TEST(ProtoDatabaseImplLevelDBTest, TestDBInitFail) {
+  ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+
+  leveldb::Options options;
+  options.create_if_missing = false;
+  scoped_ptr<LevelDB> db(new LevelDB());
+
+  KeyValueVector save_entries;
+  std::vector<std::string> load_entries;
+  KeyVector remove_keys;
+
+  EXPECT_FALSE(db->InitWithOptions(temp_dir.path(), options));
+  EXPECT_FALSE(db->Load(&load_entries));
+  EXPECT_FALSE(db->Save(save_entries, remove_keys));
+}
+
 }  // namespace leveldb_proto