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