//  Copyright (c) 2013, Facebook, Inc.  All rights reserved.
//  This source code is licensed under the BSD-style license found in the
//  LICENSE file in the root directory of this source tree. An additional grant
//  of patent rights can be found in the PATENTS file in the same directory.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.

#include "db/db_impl.h"
#include "rocksdb/db.h"
#include "util/testharness.h"

#include <algorithm>
#include <vector>
#include <string>

namespace rocksdb {

using namespace std;

class ColumnFamilyTest {
 public:
  ColumnFamilyTest() {
    dbname_ = test::TmpDir() + "/column_family_test";
    db_options_.create_if_missing = true;
    options_.create_if_missing = true;
    DestroyDB(dbname_, options_);
  }

  void Close() {
    delete db_;
    db_ = nullptr;
  }

  Status Open(vector<string> cf) {
    vector<ColumnFamilyDescriptor> column_families;
    for (auto x : cf) {
      column_families.push_back(
          ColumnFamilyDescriptor(x, ColumnFamilyOptions()));
    }
    vector <ColumnFamilyHandle> handles;
    return DB::OpenWithColumnFamilies(db_options_, dbname_, column_families,
                                      &handles, &db_);
  }

  Options options_;
  ColumnFamilyOptions column_family_options_;
  DBOptions db_options_;
  string dbname_;
  DB* db_;
};

TEST(ColumnFamilyTest, AddDrop) {
  ASSERT_OK(Open({"default"}));
  ColumnFamilyHandle handles[4];
  ASSERT_OK(
      db_->CreateColumnFamily(column_family_options_, "one", &handles[0]));
  ASSERT_OK(
      db_->CreateColumnFamily(column_family_options_, "two", &handles[1]));
  ASSERT_OK(
      db_->CreateColumnFamily(column_family_options_, "three", &handles[2]));
  ASSERT_OK(db_->DropColumnFamily(handles[1]));
  ASSERT_OK(
      db_->CreateColumnFamily(column_family_options_, "four", &handles[3]));
  Close();
  ASSERT_TRUE(Open({"default"}).IsInvalidArgument());
  ASSERT_OK(Open({"default", "one", "three", "four"}));
  Close();

  vector<string> families;
  ASSERT_OK(DB::ListColumnFamilies(db_options_, dbname_, &families));
  sort(families.begin(), families.end());
  ASSERT_TRUE(families == vector<string>({"default", "four", "one", "three"}));
}

}  // namespace rocksdb

int main(int argc, char** argv) {
  return rocksdb::test::RunAllTests();
}