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// 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 "rocksdb/slice_transform.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/statistics.h"
#include "rocksdb/table.h"
#include "test_util/testharness.h"
namespace ROCKSDB_NAMESPACE {
class SliceTransformTest : public testing::Test {};
TEST_F(SliceTransformTest, CapPrefixTransform) {
std::string s;
s = "abcdefge";
std::unique_ptr<const SliceTransform> transform;
transform.reset(NewCappedPrefixTransform(6));
ASSERT_EQ(transform->Transform(s).ToString(), "abcdef");
ASSERT_TRUE(transform->SameResultWhenAppended("123456"));
ASSERT_TRUE(transform->SameResultWhenAppended("1234567"));
ASSERT_TRUE(!transform->SameResultWhenAppended("12345"));
transform.reset(NewCappedPrefixTransform(8));
ASSERT_EQ(transform->Transform(s).ToString(), "abcdefge");
transform.reset(NewCappedPrefixTransform(10));
ASSERT_EQ(transform->Transform(s).ToString(), "abcdefge");
transform.reset(NewCappedPrefixTransform(0));
ASSERT_EQ(transform->Transform(s).ToString(), "");
transform.reset(NewCappedPrefixTransform(0));
ASSERT_EQ(transform->Transform("").ToString(), "");
}
class SliceTransformDBTest : public testing::Test {
private:
std::string dbname_;
Env* env_;
DB* db_;
public:
SliceTransformDBTest() : env_(Env::Default()), db_(nullptr) {
dbname_ = test::PerThreadDBPath("slice_transform_db_test");
EXPECT_OK(DestroyDB(dbname_, last_options_));
}
~SliceTransformDBTest() override {
delete db_;
EXPECT_OK(DestroyDB(dbname_, last_options_));
}
DB* db() { return db_; }
// Return the current option configuration.
Options* GetOptions() { return &last_options_; }
void DestroyAndReopen() {
// Destroy using last options
Destroy();
ASSERT_OK(TryReopen());
}
void Destroy() {
delete db_;
db_ = nullptr;
ASSERT_OK(DestroyDB(dbname_, last_options_));
}
Status TryReopen() {
delete db_;
db_ = nullptr;
last_options_.create_if_missing = true;
return DB::Open(last_options_, dbname_, &db_);
}
Options last_options_;
};
namespace {
uint64_t TestGetTickerCount(const Options& options, Tickers ticker_type) {
return options.statistics->getTickerCount(ticker_type);
}
} // namespace
TEST_F(SliceTransformDBTest, CapPrefix) {
last_options_.prefix_extractor.reset(NewCappedPrefixTransform(8));
last_options_.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions bbto;
bbto.filter_policy.reset(NewBloomFilterPolicy(10, false));
bbto.whole_key_filtering = false;
last_options_.table_factory.reset(NewBlockBasedTableFactory(bbto));
ASSERT_OK(TryReopen());
ReadOptions ro;
FlushOptions fo;
WriteOptions wo;
ASSERT_OK(db()->Put(wo, "barbarbar", "foo"));
ASSERT_OK(db()->Put(wo, "barbarbar2", "foo2"));
ASSERT_OK(db()->Put(wo, "foo", "bar"));
ASSERT_OK(db()->Put(wo, "foo3", "bar3"));
ASSERT_OK(db()->Flush(fo));
std::unique_ptr<Iterator> iter(db()->NewIterator(ro));
iter->Seek("foo");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ(iter->value().ToString(), "bar");
ASSERT_EQ(TestGetTickerCount(last_options_, BLOOM_FILTER_PREFIX_USEFUL), 0U);
iter->Seek("foo2");
ASSERT_OK(iter->status());
ASSERT_TRUE(!iter->Valid());
ASSERT_EQ(TestGetTickerCount(last_options_, BLOOM_FILTER_PREFIX_USEFUL), 1U);
iter->Seek("barbarbar");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ(iter->value().ToString(), "foo");
ASSERT_EQ(TestGetTickerCount(last_options_, BLOOM_FILTER_PREFIX_USEFUL), 1U);
iter->Seek("barfoofoo");
ASSERT_OK(iter->status());
ASSERT_TRUE(!iter->Valid());
ASSERT_EQ(TestGetTickerCount(last_options_, BLOOM_FILTER_PREFIX_USEFUL), 2U);
iter->Seek("foobarbar");
ASSERT_OK(iter->status());
ASSERT_TRUE(!iter->Valid());
ASSERT_EQ(TestGetTickerCount(last_options_, BLOOM_FILTER_PREFIX_USEFUL), 3U);
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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