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/**
* Copyright (C) 2021-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 <vector>
#include "mongo/bson/util/simple8b.h"
#include "mongo/unittest/unittest.h"
using namespace mongo;
void areVectorsEqual(std::vector<uint64_t> actualVector, std::vector<uint64_t> expectedVector) {
ASSERT_EQ(actualVector.size(), expectedVector.size());
for (unsigned i = 0; i < actualVector.size(); ++i) {
ASSERT_EQ(actualVector[i], expectedVector[i]);
}
}
TEST(Simple8b, EncodeOneValueTest) {
uint8_t selector = 15;
std::vector<uint64_t> values = {1};
uint64_t simple8bWord = Simple8b::encodeSimple8b(selector, values);
ASSERT_EQUALS(simple8bWord, 0xF000000000000001);
}
TEST(Simple8b, DecodeOneValueTest) {
uint64_t simple8bWord = 0xF000000000000001;
std::vector<uint64_t> values = Simple8b::decodeSimple8b(simple8bWord);
std::vector<uint64_t> expectedValues = {1};
areVectorsEqual(values, expectedValues);
}
TEST(Simple8b, EncodeMultipleValuesTest) {
uint8_t selector = 13;
std::vector<uint64_t> values = {1, 2, 3};
uint64_t simple8bWord = Simple8b::encodeSimple8b(selector, values);
ASSERT_EQUALS(simple8bWord, 0xD000010000200003);
}
TEST(Simple8b, DecodeMultipleValuesTest) {
uint64_t simple8bWord = 0xD000010000200003;
std::vector<uint64_t> values = Simple8b::decodeSimple8b(simple8bWord);
std::vector<uint64_t> expectedValues = {1, 2, 3};
areVectorsEqual(values, expectedValues);
}
TEST(Simple8b, EncodeMaxValuesTest) {
uint8_t selector = 2;
std::vector<uint64_t> values(60, 1);
uint64_t simple8bWord = Simple8b::encodeSimple8b(selector, values);
ASSERT_EQUALS(simple8bWord, 0x2FFFFFFFFFFFFFFF);
}
TEST(Simple8b, DecodeMaxValuesTest) {
uint64_t simple8bWord = 0x2FFFFFFFFFFFFFFF;
std::vector<uint64_t> values = Simple8b::decodeSimple8b(simple8bWord);
std::vector<uint64_t> expectedValues(60, 1);
areVectorsEqual(values, expectedValues);
}
TEST(Simple8b, InvalidEncodeOneSelectorTest) {
uint8_t selector = 0;
std::vector<uint64_t> values = {};
uint64_t simple8bWord = Simple8b::encodeSimple8b(selector, values);
ASSERT_EQUALS(simple8bWord, 0x1000000000000000);
}
TEST(Simple8b, InvalidEncodeSixteenSelectorTest) {
uint8_t selector = 16;
std::vector<uint64_t> values = {};
uint64_t simple8bWord = Simple8b::encodeSimple8b(selector, values);
ASSERT_EQUALS(simple8bWord, 0x1000000000000000);
}
TEST(Simple8b, InvalidDecodeOneSelectorTest) {
uint64_t simple8bWord = 0x1000000000000000;
std::vector<uint64_t> values = Simple8b::decodeSimple8b(simple8bWord);
ASSERT_EQUALS(values.size(), 0);
}
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