您最多选择25个主题
主题必须以字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
90 行
2.6 KiB
90 行
2.6 KiB
// Copyright (c) 2013 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.
|
|
|
|
// Test for issue 178: a manual compaction causes deleted data to reappear.
|
|
#include <cstdlib>
|
|
#include <iostream>
|
|
#include <sstream>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "leveldb/db.h"
|
|
#include "leveldb/write_batch.h"
|
|
#include "util/testutil.h"
|
|
|
|
namespace {
|
|
|
|
const int kNumKeys = 1100000;
|
|
|
|
std::string Key1(int i) {
|
|
char buf[100];
|
|
snprintf(buf, sizeof(buf), "my_key_%d", i);
|
|
return buf;
|
|
}
|
|
|
|
std::string Key2(int i) { return Key1(i) + "_xxx"; }
|
|
|
|
TEST(Issue178, Test) {
|
|
// Get rid of any state from an old run.
|
|
std::string dbpath = testing::TempDir() + "leveldb_cbug_test";
|
|
DestroyDB(dbpath, leveldb::Options());
|
|
|
|
// Open database. Disable compression since it affects the creation
|
|
// of layers and the code below is trying to test against a very
|
|
// specific scenario.
|
|
leveldb::DB* db;
|
|
leveldb::Options db_options;
|
|
db_options.create_if_missing = true;
|
|
db_options.compression = leveldb::kNoCompression;
|
|
ASSERT_LEVELDB_OK(leveldb::DB::Open(db_options, dbpath, &db));
|
|
|
|
// create first key range
|
|
leveldb::WriteBatch batch;
|
|
for (size_t i = 0; i < kNumKeys; i++) {
|
|
batch.Put(Key1(i), "value for range 1 key");
|
|
}
|
|
ASSERT_LEVELDB_OK(db->Write(leveldb::WriteOptions(), &batch));
|
|
|
|
// create second key range
|
|
batch.Clear();
|
|
for (size_t i = 0; i < kNumKeys; i++) {
|
|
batch.Put(Key2(i), "value for range 2 key");
|
|
}
|
|
ASSERT_LEVELDB_OK(db->Write(leveldb::WriteOptions(), &batch));
|
|
|
|
// delete second key range
|
|
batch.Clear();
|
|
for (size_t i = 0; i < kNumKeys; i++) {
|
|
batch.Delete(Key2(i));
|
|
}
|
|
ASSERT_LEVELDB_OK(db->Write(leveldb::WriteOptions(), &batch));
|
|
|
|
// compact database
|
|
std::string start_key = Key1(0);
|
|
std::string end_key = Key1(kNumKeys - 1);
|
|
leveldb::Slice least(start_key.data(), start_key.size());
|
|
leveldb::Slice greatest(end_key.data(), end_key.size());
|
|
|
|
// commenting out the line below causes the example to work correctly
|
|
db->CompactRange(&least, &greatest);
|
|
|
|
// count the keys
|
|
leveldb::Iterator* iter = db->NewIterator(leveldb::ReadOptions());
|
|
size_t num_keys = 0;
|
|
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
|
|
num_keys++;
|
|
}
|
|
delete iter;
|
|
ASSERT_EQ(kNumKeys, num_keys) << "Bad number of keys";
|
|
|
|
// close database
|
|
delete db;
|
|
DestroyDB(dbpath, leveldb::Options());
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
int main(int argc, char** argv) {
|
|
testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|