text: // Copyright (c) 2018 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <wallet/db.h>
  
  #include <fs.h>
  
  #include <test/setup_common.h>
  
  #include <boost/test/unit_test.hpp>
  
  #include <memory>
  
  BOOST_FIXTURE_TEST_SUITE(db_tests, BasicTestingSetup)
  
  BOOST_AUTO_TEST_CASE(getwalletenv_file) {
      std::string test_name = "test_name.dat";
      fs::path datadir = SetDataDir("tempdir");
      fs::path file_path = datadir / test_name;
      std::ofstream f(file_path.BOOST_FILESYSTEM_C_STR);
      f.close();
  
      std::string filename;
      std::shared_ptr<BerkeleyEnvironment> env =
          GetWalletEnv(file_path, filename);
      BOOST_CHECK(filename == test_name);
      BOOST_CHECK(env->Directory() == datadir);
  }
  
  BOOST_AUTO_TEST_CASE(getwalletenv_directory) {
      std::string expected_name = "wallet.dat";
      fs::path datadir = SetDataDir("tempdir");
  
      std::string filename;
      std::shared_ptr<BerkeleyEnvironment> env = GetWalletEnv(datadir, filename);
      BOOST_CHECK(filename == expected_name);
      BOOST_CHECK(env->Directory() == datadir);
  }
  
  BOOST_AUTO_TEST_CASE(getwalletenv_g_dbenvs_multiple) {
      fs::path datadir = SetDataDir("tempdir");
      fs::path datadir_2 = SetDataDir("tempdir_2");
      std::string filename;
  
      std::shared_ptr<BerkeleyEnvironment> env_1 =
          GetWalletEnv(datadir, filename);
      std::shared_ptr<BerkeleyEnvironment> env_2 =
          GetWalletEnv(datadir, filename);
      std::shared_ptr<BerkeleyEnvironment> env_3 =
          GetWalletEnv(datadir_2, filename);
  
      BOOST_CHECK(env_1 == env_2);
      BOOST_CHECK(env_2 != env_3);
  }
  
  BOOST_AUTO_TEST_CASE(getwalletenv_g_dbenvs_free_instance) {
      fs::path datadir = SetDataDir("tempdir");
      fs::path datadir_2 = SetDataDir("tempdir_2");
      std::string filename;
  
      std::shared_ptr<BerkeleyEnvironment> env_1_a =
          GetWalletEnv(datadir, filename);
      std::shared_ptr<BerkeleyEnvironment> env_2_a =
          GetWalletEnv(datadir_2, filename);
      env_1_a.reset();
  
      std::shared_ptr<BerkeleyEnvironment> env_1_b =
          GetWalletEnv(datadir, filename);
      std::shared_ptr<BerkeleyEnvironment> env_2_b =
          GetWalletEnv(datadir_2, filename);
  
      BOOST_CHECK(env_1_a != env_1_b);
      BOOST_CHECK(env_2_a == env_2_b);
  }
  
  BOOST_AUTO_TEST_SUITE_END()
  