git / moonbite-core / src/test/flatfile_tests.cpp · raw

// Copyright (c) 2019 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 <clientversion.h>#include <flatfile.h>#include <streams.h>#include <test/util/setup_common.h>#include <util/system.h>#include <boost/test/unit_test.hpp>BOOST_FIXTURE_TEST_SUITE(flatfile_tests, BasicTestingSetup)BOOST_AUTO_TEST_CASE(flatfile_filename){    const auto data_dir = GetDataDir();    FlatFilePos pos(456, 789);    FlatFileSeq seq1(data_dir, "a", 16 * 1024);    BOOST_CHECK_EQUAL(seq1.FileName(pos), data_dir / "a00456.dat");    FlatFileSeq seq2(data_dir / "a", "b", 16 * 1024);    BOOST_CHECK_EQUAL(seq2.FileName(pos), data_dir / "a" / "b00456.dat");}BOOST_AUTO_TEST_CASE(flatfile_open){    const auto data_dir = GetDataDir();    FlatFileSeq seq(data_dir, "a", 16 * 1024);    std::string line1("A purely peer-to-peer version of electronic cash would allow online "                      "payments to be sent directly from one party to another without going "                      "through a financial institution.");    std::string line2("Digital signatures provide part of the solution, but the main benefits are "                      "lost if a trusted third party is still required to prevent double-spending.");    size_t pos1 = 0;    size_t pos2 = pos1 + GetSerializeSize(line1, CLIENT_VERSION);    // Write first line to file.    {        CAutoFile file(seq.Open(FlatFilePos(0, pos1)), SER_DISK, CLIENT_VERSION);        file << LIMITED_STRING(line1, 256);    }    // Attempt to append to file opened in read-only mode.    {        CAutoFile file(seq.Open(FlatFilePos(0, pos2), true), SER_DISK, CLIENT_VERSION);        BOOST_CHECK_THROW(file << LIMITED_STRING(line2, 256), std::ios_base::failure);    }    // Append second line to file.    {        CAutoFile file(seq.Open(FlatFilePos(0, pos2)), SER_DISK, CLIENT_VERSION);        file << LIMITED_STRING(line2, 256);    }    // Read text from file in read-only mode.    {        std::string text;        CAutoFile file(seq.Open(FlatFilePos(0, pos1), true), SER_DISK, CLIENT_VERSION);        file >> LIMITED_STRING(text, 256);        BOOST_CHECK_EQUAL(text, line1);        file >> LIMITED_STRING(text, 256);        BOOST_CHECK_EQUAL(text, line2);    }    // Read text from file with position offset.    {        std::string text;        CAutoFile file(seq.Open(FlatFilePos(0, pos2)), SER_DISK, CLIENT_VERSION);        file >> LIMITED_STRING(text, 256);        BOOST_CHECK_EQUAL(text, line2);    }    // Ensure another file in the sequence has no data.    {        std::string text;        CAutoFile file(seq.Open(FlatFilePos(1, pos2)), SER_DISK, CLIENT_VERSION);        BOOST_CHECK_THROW(file >> LIMITED_STRING(text, 256), std::ios_base::failure);    }}BOOST_AUTO_TEST_CASE(flatfile_allocate){    const auto data_dir = GetDataDir();    FlatFileSeq seq(data_dir, "a", 100);    bool out_of_space;    BOOST_CHECK_EQUAL(seq.Allocate(FlatFilePos(0, 0), 1, out_of_space), 100U);    BOOST_CHECK_EQUAL(fs::file_size(seq.FileName(FlatFilePos(0, 0))), 100U);    BOOST_CHECK(!out_of_space);    BOOST_CHECK_EQUAL(seq.Allocate(FlatFilePos(0, 99), 1, out_of_space), 0U);    BOOST_CHECK_EQUAL(fs::file_size(seq.FileName(FlatFilePos(0, 99))), 100U);    BOOST_CHECK(!out_of_space);    BOOST_CHECK_EQUAL(seq.Allocate(FlatFilePos(0, 99), 2, out_of_space), 101U);    BOOST_CHECK_EQUAL(fs::file_size(seq.FileName(FlatFilePos(0, 99))), 200U);    BOOST_CHECK(!out_of_space);}BOOST_AUTO_TEST_CASE(flatfile_flush){    const auto data_dir = GetDataDir();    FlatFileSeq seq(data_dir, "a", 100);    bool out_of_space;    seq.Allocate(FlatFilePos(0, 0), 1, out_of_space);    // Flush without finalize should not truncate file.    seq.Flush(FlatFilePos(0, 1));    BOOST_CHECK_EQUAL(fs::file_size(seq.FileName(FlatFilePos(0, 1))), 100U);    // Flush with finalize should truncate file.    seq.Flush(FlatFilePos(0, 1), true);    BOOST_CHECK_EQUAL(fs::file_size(seq.FileName(FlatFilePos(0, 1))), 1U);}BOOST_AUTO_TEST_SUITE_END()