tomFlowee
c63519fa47
The leveldb and univalue 3rd party libraries are not installed and not needed by anyone outside of the Hub. So move them there, making it easier for 3rd party usage.
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Copyright (c) 2013 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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// Test for issue 200: when iterator switches direction from backward
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// to forward, the current key can be yielded unexpectedly if a new
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// mutation has been added just before the current key.
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#include "leveldb/db.h"
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#include "util/testharness.h"
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namespace leveldb {
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class Issue200 { };
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TEST(Issue200, Test) {
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// Get rid of any state from an old run.
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std::string dbpath = test::TmpDir() + "/leveldb_issue200_test";
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DestroyDB(dbpath, Options());
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DB *db;
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Options options;
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options.create_if_missing = true;
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ASSERT_OK(DB::Open(options, dbpath, &db));
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WriteOptions write_options;
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ASSERT_OK(db->Put(write_options, "1", "b"));
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ASSERT_OK(db->Put(write_options, "2", "c"));
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ASSERT_OK(db->Put(write_options, "3", "d"));
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ASSERT_OK(db->Put(write_options, "4", "e"));
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ASSERT_OK(db->Put(write_options, "5", "f"));
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ReadOptions read_options;
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Iterator *iter = db->NewIterator(read_options);
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// Add an element that should not be reflected in the iterator.
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ASSERT_OK(db->Put(write_options, "25", "cd"));
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iter->Seek("5");
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ASSERT_EQ(iter->key().ToString(), "5");
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iter->Prev();
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ASSERT_EQ(iter->key().ToString(), "4");
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iter->Prev();
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ASSERT_EQ(iter->key().ToString(), "3");
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iter->Next();
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ASSERT_EQ(iter->key().ToString(), "4");
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iter->Next();
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ASSERT_EQ(iter->key().ToString(), "5");
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delete iter;
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delete db;
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DestroyDB(dbpath, options);
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}
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} // namespace leveldb
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int main(int argc, char** argv) {
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return leveldb::test::RunAllTests();
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}
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