rocksdb/db/compaction_iterator_test.cc
2016-02-09 15:12:00 -08:00

72 lines
2.6 KiB
C++

// 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.
#include "db/compaction_iterator.h"
#include "util/testharness.h"
#include "util/testutil.h"
namespace rocksdb {
class CompactionIteratorTest : public testing::Test {
public:
CompactionIteratorTest() : cmp_(BytewiseComparator()), snapshots_({}) {}
void InitIterator(const std::vector<std::string>& ks,
const std::vector<std::string>& vs,
SequenceNumber last_sequence) {
merge_helper_.reset(new MergeHelper(Env::Default(), cmp_, nullptr, nullptr,
nullptr, 0U, false, 0));
iter_.reset(new test::VectorIterator(ks, vs));
iter_->SeekToFirst();
c_iter_.reset(new CompactionIterator(
iter_.get(), cmp_, merge_helper_.get(), last_sequence, &snapshots_,
kMaxSequenceNumber, Env::Default(), false));
}
const Comparator* cmp_;
std::vector<SequenceNumber> snapshots_;
std::unique_ptr<MergeHelper> merge_helper_;
std::unique_ptr<test::VectorIterator> iter_;
std::unique_ptr<CompactionIterator> c_iter_;
};
// It is possible that the output of the compaction iterator is empty even if
// the input is not.
TEST_F(CompactionIteratorTest, EmptyResult) {
InitIterator({test::KeyStr("a", 5, kTypeSingleDeletion),
test::KeyStr("a", 3, kTypeValue)},
{"", "val"}, 5);
c_iter_->SeekToFirst();
ASSERT_FALSE(c_iter_->Valid());
}
// If there is a corruption after a single deletion, the corrupted key should
// be preserved.
TEST_F(CompactionIteratorTest, CorruptionAfterSingleDeletion) {
InitIterator({test::KeyStr("a", 5, kTypeSingleDeletion),
test::KeyStr("a", 3, kTypeValue, true),
test::KeyStr("b", 10, kTypeValue)},
{"", "val", "val2"}, 10);
c_iter_->SeekToFirst();
ASSERT_TRUE(c_iter_->Valid());
ASSERT_EQ(test::KeyStr("a", 5, kTypeSingleDeletion),
c_iter_->key().ToString());
c_iter_->Next();
ASSERT_TRUE(c_iter_->Valid());
ASSERT_EQ(test::KeyStr("a", 3, kTypeValue, true), c_iter_->key().ToString());
c_iter_->Next();
ASSERT_TRUE(c_iter_->Valid());
ASSERT_EQ(test::KeyStr("b", 10, kTypeValue), c_iter_->key().ToString());
c_iter_->Next();
ASSERT_FALSE(c_iter_->Valid());
}
} // namespace rocksdb
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}