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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/bson/oid.h"
#include "mongo/platform/endian.h"
#include "mongo/unittest/unittest.h"
namespace {
using mongo::OID;
TEST(Equals, Simple) {
OID o1 = OID::gen();
ASSERT_EQUALS(o1, o1);
ASSERT_TRUE(o1 == o1);
ASSERT_EQUALS(o1.compare(o1), 0);
}
TEST(NotEquals, Simple) {
OID o1 = OID::gen();
OID o2 = OID::gen();
ASSERT_FALSE(o1 == o2);
ASSERT_TRUE(o1 != o2);
ASSERT_NOT_EQUALS(o1.compare(o2), 0);
}
TEST(Increasing, Simple) {
OID o1 = OID::gen();
OID o2 = OID::gen();
ASSERT_TRUE(o1 < o2);
}
TEST(IsSet, Simple) {
OID o;
ASSERT_FALSE(o.isSet());
o.init();
ASSERT_TRUE(o.isSet());
}
TEST(JustForked, Simple) {
OID o1 = OID::gen();
OID::justForked();
OID o2 = OID::gen();
ASSERT_TRUE(std::memcmp(o1.getInstanceUnique().bytes,
o2.getInstanceUnique().bytes,
OID::kInstanceUniqueSize) != 0);
}
TEST(TimestampIsBigEndian, Endianness) {
OID o1; // zeroed
OID::Timestamp ts = 123;
o1.setTimestamp(ts);
int32_t ts_big = mongo::endian::nativeToBig<int32_t>(123);
const char* oidBytes = o1.view().view();
ASSERT(std::memcmp(&ts_big, oidBytes, sizeof(int32_t)) == 0);
}
TEST(IncrementIsBigEndian, Endianness) {
OID o1; // zeroed
OID::Increment incr;
// Increment is a 3 byte counter big endian
incr.bytes[0] = 0xBEu;
incr.bytes[1] = 0xADu;
incr.bytes[2] = 0xDEu;
o1.setIncrement(incr);
const char* oidBytes = o1.view().view();
oidBytes += OID::kTimestampSize + OID::kInstanceUniqueSize;
// now at start of increment
ASSERT_EQUALS(uint8_t(oidBytes[0]), 0xBEu);
ASSERT_EQUALS(uint8_t(oidBytes[1]), 0xADu);
ASSERT_EQUALS(uint8_t(oidBytes[2]), 0xDEu);
}
TEST(Basic, Deserialize) {
uint8_t OIDbytes[] = {
0xDEu,
0xADu,
0xBEu,
0xEFu, // timestamp is -559038737 (signed)
0x00u,
0x00u,
0x00u,
0x00u,
0x00u, // unique is 0
0x11u,
0x22u,
0x33u // increment is 1122867
};
OID o1 = OID::from(OIDbytes);
ASSERT_EQUALS(o1.getTimestamp(), -559038737);
OID::InstanceUnique u = o1.getInstanceUnique();
for (std::size_t i = 0; i < OID::kInstanceUniqueSize; ++i) {
ASSERT_EQUALS(u.bytes[i], 0x00u);
}
OID::Increment i = o1.getIncrement();
// construct a uint32_t from increment
// recall that i is a big-endian 3 byte unsigned integer
uint32_t incr =
((uint32_t(i.bytes[0]) << 16)) | ((uint32_t(i.bytes[1]) << 8)) | uint32_t(i.bytes[2]);
ASSERT_EQUALS(1122867u, incr);
}
TEST(Basic, FromString) {
std::string oidStr("541b1a00e8a23afa832b218e");
uint8_t oidBytes[] = {
0x54u, 0x1Bu, 0x1Au, 0x00u, 0xE8u, 0xA2u, 0x3Au, 0xFAu, 0x83u, 0x2Bu, 0x21u, 0x8Eu};
ASSERT_EQUALS(OID(oidStr), OID::from(oidBytes));
}
TEST(Basic, FromStringToString) {
std::string fromStr("541b1a00e8a23afa832b218e");
ASSERT_EQUALS(OID(fromStr).toString(), fromStr);
}
TEST(Basic, FromTerm) {
auto term = 7;
auto oid = OID::fromTerm(term);
auto oidStr = oid.toString();
auto oidHead = oidStr.substr(0, 8);
auto oidTail = oidStr.substr(oidStr.length() - 1);
ASSERT_EQUALS("7fffffff", oidHead);
ASSERT_EQUALS(term, std::stoi(oidTail));
}
}
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