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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/util/coding_test.cc | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/util/coding_test.cc | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/rocksdb/util/coding_test.cc b/src/rocksdb/util/coding_test.cc new file mode 100644 index 000000000..79dd7b82e --- /dev/null +++ b/src/rocksdb/util/coding_test.cc @@ -0,0 +1,217 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). +// +// Copyright (c) 2011 The LevelDB Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. See the AUTHORS file for names of contributors. + +#include "util/coding.h" + +#include "test_util/testharness.h" + +namespace ROCKSDB_NAMESPACE { + +class Coding {}; +TEST(Coding, Fixed16) { + std::string s; + for (uint16_t v = 0; v < 0xFFFF; v++) { + PutFixed16(&s, v); + } + + const char* p = s.data(); + for (uint16_t v = 0; v < 0xFFFF; v++) { + uint16_t actual = DecodeFixed16(p); + ASSERT_EQ(v, actual); + p += sizeof(uint16_t); + } +} + +TEST(Coding, Fixed32) { + std::string s; + for (uint32_t v = 0; v < 100000; v++) { + PutFixed32(&s, v); + } + + const char* p = s.data(); + for (uint32_t v = 0; v < 100000; v++) { + uint32_t actual = DecodeFixed32(p); + ASSERT_EQ(v, actual); + p += sizeof(uint32_t); + } +} + +TEST(Coding, Fixed64) { + std::string s; + for (int power = 0; power <= 63; power++) { + uint64_t v = static_cast<uint64_t>(1) << power; + PutFixed64(&s, v - 1); + PutFixed64(&s, v + 0); + PutFixed64(&s, v + 1); + } + + const char* p = s.data(); + for (int power = 0; power <= 63; power++) { + uint64_t v = static_cast<uint64_t>(1) << power; + uint64_t actual = 0; + actual = DecodeFixed64(p); + ASSERT_EQ(v - 1, actual); + p += sizeof(uint64_t); + + actual = DecodeFixed64(p); + ASSERT_EQ(v + 0, actual); + p += sizeof(uint64_t); + + actual = DecodeFixed64(p); + ASSERT_EQ(v + 1, actual); + p += sizeof(uint64_t); + } +} + +// Test that encoding routines generate little-endian encodings +TEST(Coding, EncodingOutput) { + std::string dst; + PutFixed32(&dst, 0x04030201); + ASSERT_EQ(4U, dst.size()); + ASSERT_EQ(0x01, static_cast<int>(dst[0])); + ASSERT_EQ(0x02, static_cast<int>(dst[1])); + ASSERT_EQ(0x03, static_cast<int>(dst[2])); + ASSERT_EQ(0x04, static_cast<int>(dst[3])); + + dst.clear(); + PutFixed64(&dst, 0x0807060504030201ull); + ASSERT_EQ(8U, dst.size()); + ASSERT_EQ(0x01, static_cast<int>(dst[0])); + ASSERT_EQ(0x02, static_cast<int>(dst[1])); + ASSERT_EQ(0x03, static_cast<int>(dst[2])); + ASSERT_EQ(0x04, static_cast<int>(dst[3])); + ASSERT_EQ(0x05, static_cast<int>(dst[4])); + ASSERT_EQ(0x06, static_cast<int>(dst[5])); + ASSERT_EQ(0x07, static_cast<int>(dst[6])); + ASSERT_EQ(0x08, static_cast<int>(dst[7])); +} + +TEST(Coding, Varint32) { + std::string s; + for (uint32_t i = 0; i < (32 * 32); i++) { + uint32_t v = (i / 32) << (i % 32); + PutVarint32(&s, v); + } + + const char* p = s.data(); + const char* limit = p + s.size(); + for (uint32_t i = 0; i < (32 * 32); i++) { + uint32_t expected = (i / 32) << (i % 32); + uint32_t actual = 0; + const char* start = p; + p = GetVarint32Ptr(p, limit, &actual); + ASSERT_TRUE(p != nullptr); + ASSERT_EQ(expected, actual); + ASSERT_EQ(VarintLength(actual), p - start); + } + ASSERT_EQ(p, s.data() + s.size()); +} + +TEST(Coding, Varint64) { + // Construct the list of values to check + std::vector<uint64_t> values; + // Some special values + values.push_back(0); + values.push_back(100); + values.push_back(~static_cast<uint64_t>(0)); + values.push_back(~static_cast<uint64_t>(0) - 1); + for (uint32_t k = 0; k < 64; k++) { + // Test values near powers of two + const uint64_t power = 1ull << k; + values.push_back(power); + values.push_back(power - 1); + values.push_back(power + 1); + }; + + std::string s; + for (unsigned int i = 0; i < values.size(); i++) { + PutVarint64(&s, values[i]); + } + + const char* p = s.data(); + const char* limit = p + s.size(); + for (unsigned int i = 0; i < values.size(); i++) { + ASSERT_TRUE(p < limit); + uint64_t actual = 0; + const char* start = p; + p = GetVarint64Ptr(p, limit, &actual); + ASSERT_TRUE(p != nullptr); + ASSERT_EQ(values[i], actual); + ASSERT_EQ(VarintLength(actual), p - start); + } + ASSERT_EQ(p, limit); +} + +TEST(Coding, Varint32Overflow) { + uint32_t result; + std::string input("\x81\x82\x83\x84\x85\x11"); + ASSERT_TRUE(GetVarint32Ptr(input.data(), input.data() + input.size(), + &result) == nullptr); +} + +TEST(Coding, Varint32Truncation) { + uint32_t large_value = (1u << 31) + 100; + std::string s; + PutVarint32(&s, large_value); + uint32_t result; + for (unsigned int len = 0; len + 1 < s.size(); len++) { + ASSERT_TRUE(GetVarint32Ptr(s.data(), s.data() + len, &result) == nullptr); + } + ASSERT_TRUE(GetVarint32Ptr(s.data(), s.data() + s.size(), &result) != + nullptr); + ASSERT_EQ(large_value, result); +} + +TEST(Coding, Varint64Overflow) { + uint64_t result; + std::string input("\x81\x82\x83\x84\x85\x81\x82\x83\x84\x85\x11"); + ASSERT_TRUE(GetVarint64Ptr(input.data(), input.data() + input.size(), + &result) == nullptr); +} + +TEST(Coding, Varint64Truncation) { + uint64_t large_value = (1ull << 63) + 100ull; + std::string s; + PutVarint64(&s, large_value); + uint64_t result; + for (unsigned int len = 0; len + 1 < s.size(); len++) { + ASSERT_TRUE(GetVarint64Ptr(s.data(), s.data() + len, &result) == nullptr); + } + ASSERT_TRUE(GetVarint64Ptr(s.data(), s.data() + s.size(), &result) != + nullptr); + ASSERT_EQ(large_value, result); +} + +TEST(Coding, Strings) { + std::string s; + PutLengthPrefixedSlice(&s, Slice("")); + PutLengthPrefixedSlice(&s, Slice("foo")); + PutLengthPrefixedSlice(&s, Slice("bar")); + PutLengthPrefixedSlice(&s, Slice(std::string(200, 'x'))); + + Slice input(s); + Slice v; + ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); + ASSERT_EQ("", v.ToString()); + ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); + ASSERT_EQ("foo", v.ToString()); + ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); + ASSERT_EQ("bar", v.ToString()); + ASSERT_TRUE(GetLengthPrefixedSlice(&input, &v)); + ASSERT_EQ(std::string(200, 'x'), v.ToString()); + ASSERT_EQ("", input.ToString()); +} + +} // namespace ROCKSDB_NAMESPACE + +int main(int argc, char** argv) { + ROCKSDB_NAMESPACE::port::InstallStackTraceHandler(); + ::testing::InitGoogleTest(&argc, argv); + return RUN_ALL_TESTS(); +} |