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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/base/data_range.h"
#include <cstring>
#include "mongo/base/data_type_endian.h"
#include "mongo/platform/endian.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
TEST(DataRange, ConstDataRange) {
unsigned char buf[sizeof(uint32_t) * 3];
uint32_t native = 1234;
uint32_t le = endian::nativeToLittle(native);
uint32_t be = endian::nativeToBig(native);
std::memcpy(buf, &native, sizeof(uint32_t));
std::memcpy(buf + sizeof(uint32_t), &le, sizeof(uint32_t));
std::memcpy(buf + sizeof(uint32_t) * 2, &be, sizeof(uint32_t));
ConstDataRange cdv(buf, buf + sizeof(buf));
ASSERT_EQUALS(native, cdv.read<uint32_t>());
ASSERT_EQUALS(native, cdv.read<LittleEndian<uint32_t>>(sizeof(uint32_t)));
ASSERT_EQUALS(native, cdv.read<BigEndian<uint32_t>>(sizeof(uint32_t) * 2));
auto result = cdv.readNoThrow<uint32_t>(sizeof(uint32_t) * 3);
ASSERT_EQUALS(false, result.isOK());
ASSERT_EQUALS(ErrorCodes::Overflow, result.getStatus().code());
}
TEST(DataRange, ConstDataRangeType) {
char buf[] = "foo";
ConstDataRange cdr(buf, buf + sizeof(buf));
ConstDataRange out(nullptr, nullptr);
auto inner = cdr.readIntoNoThrow(&out);
ASSERT_OK(inner);
ASSERT_EQUALS(buf, out.data());
}
TEST(DataRange, DataRange) {
uint8_t buf[sizeof(uint32_t) * 3];
uint32_t native = 1234;
DataRange dv(buf, buf + sizeof(buf));
ASSERT_OK(dv.writeNoThrow(native));
ASSERT_OK(dv.writeNoThrow(LittleEndian<uint32_t>(native), sizeof(uint32_t)));
ASSERT_OK(dv.writeNoThrow(BigEndian<uint32_t>(native), sizeof(uint32_t) * 2));
auto result = dv.writeNoThrow(native, sizeof(uint32_t) * 3);
ASSERT_NOT_OK(result);
ASSERT_EQUALS(ErrorCodes::Overflow, result.code());
ASSERT_EQUALS(native, dv.read<uint32_t>());
ASSERT_EQUALS(native, dv.read<LittleEndian<uint32_t>>(sizeof(uint32_t)));
ASSERT_EQUALS(native, dv.read<BigEndian<uint32_t>>(sizeof(uint32_t) * 2));
ASSERT_NOT_OK(dv.readNoThrow<uint32_t>(sizeof(uint32_t) * 3));
}
TEST(DataRange, DataRangeType) {
char buf[] = "foo";
char buf2[] = "barZ";
DataRange dr(buf, buf + sizeof(buf) + -1);
DataRange out(nullptr, nullptr);
Status status = dr.readIntoNoThrow(&out);
ASSERT_OK(status);
ASSERT_EQUALS(buf, out.data());
dr = DataRange(buf2, buf2 + sizeof(buf2) + -1);
status = dr.writeNoThrow(out);
ASSERT_OK(status);
ASSERT_EQUALS(std::string("fooZ"), buf2);
}
TEST(DataRange, InitFromContainer) {
std::vector<uint8_t> vec(20);
ConstDataRange dr(vec);
DataRange out(nullptr, nullptr);
ASSERT_OK(dr.readIntoNoThrow(&out));
DataRange mutableDr(vec);
ASSERT_OK(mutableDr.writeNoThrow<int>(6));
std::array<char, 5> array;
DataRange arrDR(array);
auto status = arrDR.writeNoThrow<uint64_t>(std::numeric_limits<uint64_t>::max());
ASSERT_EQUALS(status, ErrorCodes::Overflow);
}
} // namespace mongo
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