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libtorrent/test/test_bencoding.cpp
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/*
Copyright (c) 2005, 2008, 2015-2020, 2022, Arvid Norberg
Copyright (c) 2018, Alden Torres
Copyright (c) 2018, Eugene Shalygin
All rights reserved.
You may use, distribute and modify this code under the terms of the BSD license,
see LICENSE file.
*/
#include "libtorrent/bencode.hpp"
#include "libtorrent/bdecode.hpp"
#include <iostream>
#include <cstring>
#include <utility>
#include "test.hpp"
using namespace lt;
// test vectors from bittorrent protocol description
// http://www.bittorrent.com/protocol.html
namespace {
std::string encode(entry const& e)
{
std::string ret;
bencode(std::back_inserter(ret), e);
std::vector<char> const out = bencode(e);
TEST_EQUAL(ret, std::string(out.begin(), out.end()));
return ret;
}
} // anonymous namespace
TORRENT_TEST(strings)
{
entry e("spam");
TEST_CHECK(encode(e) == "4:spam");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(integers)
{
entry e(3);
TEST_CHECK(encode(e) == "i3e");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(integers2)
{
entry e(-3);
TEST_CHECK(encode(e) == "i-3e");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(integers3)
{
entry e(int(0));
TEST_CHECK(encode(e) == "i0e");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(lists)
{
entry::list_type l;
l.push_back(entry("spam"));
l.push_back(entry("eggs"));
entry e(l);
TEST_CHECK(encode(e) == "l4:spam4:eggse");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(dictionaries)
{
entry e(entry::dictionary_t);
e["spam"] = entry("eggs");
e["cow"] = entry("moo");
TEST_CHECK(encode(e) == "d3:cow3:moo4:spam4:eggse");
TEST_CHECK(bdecode(encode(e)) == e);
}
TORRENT_TEST(preformatted)
{
entry e(entry::preformatted_t);
char const str[] = "foobar";
e.preformatted().assign(str, str + sizeof(str)-1);
TEST_EQUAL(encode(e), "foobar");
}
TORRENT_TEST(preformatted_node)
{
entry e(entry::dictionary_t);
char const str[] = "foobar";
e["info"] = entry::preformatted_type(str, str + sizeof(str)-1);
TEST_EQUAL(encode(e), "d4:infofoobare");
}
TORRENT_TEST(undefined_node)
{
entry e(entry::undefined_t);
TEST_EQUAL(encode(e), "0:");
}
TORRENT_TEST(undefined_node2)
{
entry e(entry::dictionary_t);
e["info"] = entry(entry::undefined_t);
TEST_EQUAL(encode(e), "d4:info0:e");
}
TORRENT_TEST(implicit_construct)
{
entry e(entry::list_t);
e.list().push_back(entry::list_t);
TEST_EQUAL(e.list().back().type(), entry::list_t);
}
TORRENT_TEST(print_dict_single_line)
{
entry e;
e["foo"] = "bar";
e["bar"] = "foo";
TEST_EQUAL(e.to_string(true), "{ 'bar': 'foo', 'foo': 'bar' }");
}
TORRENT_TEST(print_dict)
{
entry e;
e["foo"] = "bar";
e["bar"] = "foo";
TEST_EQUAL(e.to_string(), "{\n 'bar': 'foo',\n 'foo': 'bar' }");
}
TORRENT_TEST(print_list_single_line)
{
entry e;
e.list().push_back(entry("foo"));
e.list().push_back(entry("bar"));
TEST_EQUAL(e.to_string(true), "[ 'foo', 'bar' ]");
}
TORRENT_TEST(print_list)
{
entry e;
e.list().push_back(entry("foo"));
e.list().push_back(entry("bar"));
TEST_EQUAL(e.to_string(), "[\n 'foo',\n 'bar' ]");
}
TORRENT_TEST(print_int_single_line)
{
entry e(1337);
TEST_EQUAL(e.to_string(true), "1337");
}
TORRENT_TEST(print_int)
{
entry e(1337);
TEST_EQUAL(e.to_string(), "1337");
}
TORRENT_TEST(print_string_single_line)
{
entry e("foobar");
TEST_EQUAL(e.to_string(true), "'foobar'");
}
TORRENT_TEST(print_string)
{
entry e("foobar");
TEST_EQUAL(e.to_string(), "'foobar'");
}
TORRENT_TEST(print_deep_dict_single_line)
{
entry e;
e["strings"].list().push_back(entry("foo"));
e["strings"].list().push_back(entry("bar"));
e["ints"].list().push_back(entry(1));
e["ints"].list().push_back(entry(2));
e["ints"].list().push_back(entry(3));
e["a"] = "foobar";
TEST_EQUAL(e.to_string(true), "{ 'a': 'foobar', 'ints': [ 1, 2, 3 ], 'strings': [ 'foo', 'bar' ] }");
}
TORRENT_TEST(print_deep_dict)
{
entry e;
e["strings"].list().push_back(entry("foo"));
e["strings"].list().push_back(entry("bar"));
e["ints"].list().push_back(entry(1));
e["ints"].list().push_back(entry(2));
e["ints"].list().push_back(entry(3));
e["a"] = "foobar";
TEST_EQUAL(e.to_string(), R"({
'a': 'foobar',
'ints': [
1,
2,
3 ],
'strings': [
'foo',
'bar' ] })");
}
TORRENT_TEST(dict_constructor)
{
entry::dictionary_type e{{std::string("foo"), std::string("bar")},
{std::string("bar"), 1234}};
TEST_EQUAL(entry(e).to_string(), R"({
'bar': 1234,
'foo': 'bar' })");
}
TORRENT_TEST(integer_to_str)
{
using lt::aux::integer_to_str;
std::array<char, 21> buf;
TEST_CHECK(integer_to_str(buf, 0) == "0"_sv);
TEST_CHECK(integer_to_str(buf, 1) == "1"_sv);
TEST_CHECK(integer_to_str(buf, 2) == "2"_sv);
TEST_CHECK(integer_to_str(buf, 3) == "3"_sv);
TEST_CHECK(integer_to_str(buf, 4) == "4"_sv);
TEST_CHECK(integer_to_str(buf, 5) == "5"_sv);
TEST_CHECK(integer_to_str(buf, 6) == "6"_sv);
TEST_CHECK(integer_to_str(buf, 7) == "7"_sv);
TEST_CHECK(integer_to_str(buf, 8) == "8"_sv);
TEST_CHECK(integer_to_str(buf, 9) == "9"_sv);
TEST_CHECK(integer_to_str(buf, 10) == "10"_sv);
TEST_CHECK(integer_to_str(buf, 11) == "11"_sv);
TEST_CHECK(integer_to_str(buf, -1) == "-1"_sv);
TEST_CHECK(integer_to_str(buf, -2) == "-2"_sv);
TEST_CHECK(integer_to_str(buf, -3) == "-3"_sv);
TEST_CHECK(integer_to_str(buf, -4) == "-4"_sv);
TEST_CHECK(integer_to_str(buf, -5) == "-5"_sv);
TEST_CHECK(integer_to_str(buf, -6) == "-6"_sv);
TEST_CHECK(integer_to_str(buf, -7) == "-7"_sv);
TEST_CHECK(integer_to_str(buf, -8) == "-8"_sv);
TEST_CHECK(integer_to_str(buf, -9) == "-9"_sv);
TEST_CHECK(integer_to_str(buf, -10) == "-10"_sv);
TEST_CHECK(integer_to_str(buf, -11) == "-11"_sv);
TEST_CHECK(integer_to_str(buf, 12) == "12"_sv);
TEST_CHECK(integer_to_str(buf, -12) == "-12"_sv);
TEST_CHECK(integer_to_str(buf, 123) == "123"_sv);
TEST_CHECK(integer_to_str(buf, -123) == "-123"_sv);
TEST_CHECK(integer_to_str(buf, 1234) == "1234"_sv);
TEST_CHECK(integer_to_str(buf, -1234) == "-1234"_sv);
TEST_CHECK(integer_to_str(buf, 12345) == "12345"_sv);
TEST_CHECK(integer_to_str(buf, -12345) == "-12345"_sv);
TEST_CHECK(integer_to_str(buf, 123456) == "123456"_sv);
TEST_CHECK(integer_to_str(buf, -123456) == "-123456"_sv);
TEST_CHECK(integer_to_str(buf, 123456789012345678LL) == "123456789012345678"_sv);
TEST_CHECK(integer_to_str(buf, -123456789012345678LL) == "-123456789012345678"_sv);
TEST_CHECK(integer_to_str(buf, std::numeric_limits<std::int64_t>::max()) == "9223372036854775807"_sv);
TEST_CHECK(integer_to_str(buf, std::numeric_limits<std::int64_t>::min()) == "-9223372036854775808"_sv);
}
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