lmdb-safe/test-basic.cc

#define CATCH_CONFIG_MAIN

#include <iostream>
#include "catch2/catch.hpp"
#include "lmdb-safe.hh"

using namespace std;

TEST_CASE("Most basic tests", "[mostbasic]") {
  unlink("./tests");

  MDBEnv env("./tests", MDB_NOSUBDIR, 0600);
  REQUIRE(1);

  MDBDbi main = env.openDB("", MDB_CREATE);

  auto txn = env.getRWTransaction();
  MDBOutVal out;

  REQUIRE(txn.get(main, "lmdb", out) == MDB_NOTFOUND);

  txn.put(main, "lmdb", "hot");

  REQUIRE(txn.get(main, "lmdb", out) == 0);
  REQUIRE(out.get<std::string>() == "hot");
  txn.abort();

  auto rotxn = env.getROTransaction();
  REQUIRE(rotxn.get(main, "lmdb", out) == MDB_NOTFOUND);
}

TEST_CASE("Range tests", "[range]") {
  unlink("./tests");

  MDBEnv env("./tests", MDB_NOSUBDIR, 0600);
  REQUIRE(1);

  MDBDbi main = env.openDB("", MDB_CREATE);

  auto txn = env.getRWTransaction();
  MDBOutVal out;

  REQUIRE(txn.get(main, "lmdb", out) == MDB_NOTFOUND);

  txn.put(main, "bert", "hubert");
  txn.put(main, "bertt", "1975");
  txn.put(main, "berthubert", "lmdb");
  txn.put(main, "bert1", "one");
  txn.put(main, "beru", "not");

  {
    auto cursor = txn.getCursor(main);
    MDBInVal bert("bert");
    MDBOutVal key, val;
    REQUIRE(cursor.lower_bound(bert, key, val) == 0);
    REQUIRE(key.get<string>() == "bert");
    REQUIRE(val.get<string>() == "hubert");

    REQUIRE(cursor.next(key, val) == 0);
    REQUIRE(key.get<string>() == "bert1");
    REQUIRE(val.get<string>() == "one");

    REQUIRE(cursor.next(key, val) == 0);
    REQUIRE(key.get<string>() == "berthubert");
    REQUIRE(val.get<string>() == "lmdb");

    REQUIRE(cursor.lower_bound("kees", key, val) == MDB_NOTFOUND);

    txn.commit();
  }

  auto rotxn = env.getROTransaction();
  {
    auto cursor = rotxn.getCursor(main);
    MDBInVal bert("bert");
    MDBOutVal key, val;
    REQUIRE(cursor.lower_bound(bert, key, val) == 0);
    REQUIRE(key.get<string>() == "bert");
    REQUIRE(val.get<string>() == "hubert");

    REQUIRE(cursor.next(key, val) == 0);
    REQUIRE(key.get<string>() == "bert1");
    REQUIRE(val.get<string>() == "one");

    REQUIRE(cursor.next(key, val) == 0);
    REQUIRE(key.get<string>() == "berthubert");
    REQUIRE(val.get<string>() == "lmdb");

    REQUIRE(cursor.lower_bound("kees", key, val) == MDB_NOTFOUND);
  }

}

TEST_CASE("moving transactions")
{
  unlink("./tests");

  MDBEnv env("./tests", MDB_NOSUBDIR, 0600);
  REQUIRE(1);

  MDBDbi main = env.openDB("", MDB_CREATE);

  auto txn = env.getRWTransaction();
  MDBOutVal out;

  REQUIRE(txn.get(main, "lmdb", out) == MDB_NOTFOUND);

  txn.put(main, "bert", "hubert");
  txn.put(main, "bertt", "1975");
  txn.put(main, "berthubert", "lmdb");
  txn.put(main, "bert1", "one");
  txn.put(main, "beru", "not");

  auto cursor = txn.getCursor(main);
  auto txn2 = std::move(txn);
  {
    auto cursor2 = std::move(cursor);
  }
}