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Diffstat (limited to 'src/mongo/bson/util/simple8b_test.cpp')
-rw-r--r-- | src/mongo/bson/util/simple8b_test.cpp | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/mongo/bson/util/simple8b_test.cpp b/src/mongo/bson/util/simple8b_test.cpp new file mode 100644 index 00000000000..922d00261f9 --- /dev/null +++ b/src/mongo/bson/util/simple8b_test.cpp @@ -0,0 +1,105 @@ +/** + * 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); +} |