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rocksdb/utilities/column_aware_encoding_test.cc

194 lines
6.2 KiB

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#ifndef ROCKSDB_LITE
#include <vector>
#include "util/testharness.h"
#include "util/testutil.h"
#include "utilities/col_buf_decoder.h"
#include "utilities/col_buf_encoder.h"
namespace rocksdb {
class ColumnAwareEncodingTest : public testing::Test {
public:
ColumnAwareEncodingTest() {}
~ColumnAwareEncodingTest() {}
};
TEST_F(ColumnAwareEncodingTest, NoCompressionEncodeDecode) {
std::unique_ptr<ColBufEncoder> col_buf_encoder(
new FixedLengthColBufEncoder(8, kColNoCompression, false, true));
std::string str_buf;
uint64_t val = 0x0102030405060708;
for (int i = 0; i < 4; ++i) {
str_buf.append(reinterpret_cast<char*>(&val), 8);
}
const char* str_buf_ptr = str_buf.c_str();
for (int i = 0; i < 4; ++i) {
col_buf_encoder->Append(str_buf_ptr);
}
col_buf_encoder->Finish();
const std::string& encoded_data = col_buf_encoder->GetData();
ASSERT_EQ(encoded_data.size(), 32);
const char* encoded_data_ptr = encoded_data.c_str();
uint64_t encoded_val;
for (int i = 0; i < 4; ++i) {
memcpy(&encoded_val, encoded_data_ptr, 8);
ASSERT_EQ(encoded_val, 0x0807060504030201);
encoded_data_ptr += 8;
}
std::unique_ptr<ColBufDecoder> col_buf_decoder(
new FixedLengthColBufDecoder(8, kColNoCompression, false, true));
encoded_data_ptr = encoded_data.c_str();
encoded_data_ptr += col_buf_decoder->Init(encoded_data_ptr);
char* decoded_data = new char[100];
char* decoded_data_base = decoded_data;
for (int i = 0; i < 4; ++i) {
encoded_data_ptr +=
col_buf_decoder->Decode(encoded_data_ptr, &decoded_data);
}
ASSERT_EQ(4 * 8, decoded_data - decoded_data_base);
decoded_data = decoded_data_base;
for (int i = 0; i < 4; ++i) {
uint64_t decoded_val;
decoded_val = 0;
memcpy(&decoded_val, decoded_data, 8);
ASSERT_EQ(decoded_val, val);
decoded_data += 8;
}
delete[] decoded_data_base;
}
TEST_F(ColumnAwareEncodingTest, RleEncodeDecode) {
std::unique_ptr<ColBufEncoder> col_buf_encoder(
new FixedLengthColBufEncoder(8, kColRle, false, true));
std::string str_buf;
uint64_t val = 0x0102030405060708;
for (int i = 0; i < 4; ++i) {
str_buf.append(reinterpret_cast<char*>(&val), 8);
}
const char* str_buf_ptr = str_buf.c_str();
for (int i = 0; i < 4; ++i) {
str_buf_ptr += col_buf_encoder->Append(str_buf_ptr);
}
col_buf_encoder->Finish();
const std::string& encoded_data = col_buf_encoder->GetData();
ASSERT_EQ(encoded_data.size(), 9);
const char* encoded_data_ptr = encoded_data.c_str();
uint64_t encoded_val;
memcpy(&encoded_val, encoded_data_ptr, 8);
ASSERT_EQ(encoded_val, 0x0807060504030201);
std::unique_ptr<ColBufDecoder> col_buf_decoder(
new FixedLengthColBufDecoder(8, kColRle, false, true));
char* decoded_data = new char[100];
char* decoded_data_base = decoded_data;
encoded_data_ptr += col_buf_decoder->Init(encoded_data_ptr);
for (int i = 0; i < 4; ++i) {
encoded_data_ptr +=
col_buf_decoder->Decode(encoded_data_ptr, &decoded_data);
}
ASSERT_EQ(4 * 8, decoded_data - decoded_data_base);
decoded_data = decoded_data_base;
for (int i = 0; i < 4; ++i) {
uint64_t decoded_val;
decoded_val = 0;
memcpy(&decoded_val, decoded_data, 8);
ASSERT_EQ(decoded_val, val);
decoded_data += 8;
}
delete[] decoded_data_base;
}
TEST_F(ColumnAwareEncodingTest, DeltaEncodeDecode) {
std::unique_ptr<ColBufEncoder> col_buf_encoder(
new FixedLengthColBufEncoder(8, kColDeltaVarint, false, true));
std::string str_buf;
uint64_t val = 0x0102030405060708;
uint64_t val2 = 0x0202030405060708;
const char* str_buf_ptr;
for (int i = 0; i < 2; ++i) {
str_buf = std::string(reinterpret_cast<char*>(&val), 8);
str_buf_ptr = str_buf.c_str();
col_buf_encoder->Append(str_buf_ptr);
str_buf = std::string(reinterpret_cast<char*>(&val2), 8);
str_buf_ptr = str_buf.c_str();
col_buf_encoder->Append(str_buf_ptr);
}
col_buf_encoder->Finish();
const std::string& encoded_data = col_buf_encoder->GetData();
ASSERT_EQ(encoded_data.size(), 9 + 3);
std::unique_ptr<ColBufDecoder> col_buf_decoder(
new FixedLengthColBufDecoder(8, kColDeltaVarint, false, true));
char* decoded_data = new char[100];
char* decoded_data_base = decoded_data;
const char* encoded_data_ptr = encoded_data.c_str();
encoded_data_ptr += col_buf_decoder->Init(encoded_data_ptr);
for (int i = 0; i < 4; ++i) {
encoded_data_ptr +=
col_buf_decoder->Decode(encoded_data_ptr, &decoded_data);
}
ASSERT_EQ(4 * 8, decoded_data - decoded_data_base);
decoded_data = decoded_data_base;
for (int i = 0; i < 2; ++i) {
uint64_t decoded_val;
memcpy(&decoded_val, decoded_data, 8);
ASSERT_EQ(decoded_val, val);
decoded_data += 8;
memcpy(&decoded_val, decoded_data, 8);
ASSERT_EQ(decoded_val, val2);
decoded_data += 8;
}
delete[] decoded_data_base;
}
TEST_F(ColumnAwareEncodingTest, ChunkBufEncodeDecode) {
std::unique_ptr<ColBufEncoder> col_buf_encoder(
new VariableChunkColBufEncoder(kColDict));
std::string buf("12345678\377\1\0\0\0\0\0\0\0\376", 18);
col_buf_encoder->Append(buf.c_str());
col_buf_encoder->Finish();
const std::string& encoded_data = col_buf_encoder->GetData();
const char* str_ptr = encoded_data.c_str();
std::unique_ptr<ColBufDecoder> col_buf_decoder(
new VariableChunkColBufDecoder(kColDict));
str_ptr += col_buf_decoder->Init(str_ptr);
char* decoded_data = new char[100];
char* decoded_data_base = decoded_data;
col_buf_decoder->Decode(str_ptr, &decoded_data);
for (size_t i = 0; i < buf.size(); ++i) {
ASSERT_EQ(buf[i], decoded_data_base[i]);
}
delete[] decoded_data_base;
}
} // namespace rocksdb
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
#else
#include <cstdio>
int main() {
fprintf(stderr,
"SKIPPED as column aware encoding experiment is not enabled in "
"ROCKSDB_LITE\n");
}
#endif // ROCKSDB_LITE