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.
113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
// Copyright (c) 2011 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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#include "db/dbformat.h"
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#include "util/logging.h"
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#include "util/testharness.h"
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namespace leveldb {
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static std::string IKey(const std::string& user_key,
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uint64_t seq,
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ValueType vt) {
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std::string encoded;
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AppendInternalKey(&encoded, ParsedInternalKey(user_key, seq, vt));
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return encoded;
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}
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static std::string Shorten(const std::string& s, const std::string& l) {
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std::string result = s;
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InternalKeyComparator(BytewiseComparator()).FindShortestSeparator(&result, l);
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return result;
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}
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static std::string ShortSuccessor(const std::string& s) {
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std::string result = s;
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InternalKeyComparator(BytewiseComparator()).FindShortSuccessor(&result);
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return result;
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}
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static void TestKey(const std::string& key,
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uint64_t seq,
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ValueType vt) {
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std::string encoded = IKey(key, seq, vt);
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Slice in(encoded);
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ParsedInternalKey decoded("", 0, kTypeValue);
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ASSERT_TRUE(ParseInternalKey(in, &decoded));
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ASSERT_EQ(key, decoded.user_key.ToString());
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ASSERT_EQ(seq, decoded.sequence);
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ASSERT_EQ(vt, decoded.type);
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ASSERT_TRUE(!ParseInternalKey(Slice("bar"), &decoded));
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}
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class FormatTest { };
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TEST(FormatTest, InternalKey_EncodeDecode) {
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const char* keys[] = { "", "k", "hello", "longggggggggggggggggggggg" };
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const uint64_t seq[] = {
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1, 2, 3,
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(1ull << 8) - 1, 1ull << 8, (1ull << 8) + 1,
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(1ull << 16) - 1, 1ull << 16, (1ull << 16) + 1,
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(1ull << 32) - 1, 1ull << 32, (1ull << 32) + 1
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};
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for (int k = 0; k < sizeof(keys) / sizeof(keys[0]); k++) {
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for (int s = 0; s < sizeof(seq) / sizeof(seq[0]); s++) {
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TestKey(keys[k], seq[s], kTypeValue);
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TestKey("hello", 1, kTypeDeletion);
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}
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}
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}
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TEST(FormatTest, InternalKeyShortSeparator) {
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// When user keys are same
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("foo", 99, kTypeValue)));
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("foo", 101, kTypeValue)));
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("foo", 100, kTypeValue)));
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("foo", 100, kTypeDeletion)));
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// When user keys are misordered
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("bar", 99, kTypeValue)));
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// When user keys are different, but correctly ordered
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ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("hello", 200, kTypeValue)));
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// When start user key is prefix of limit user key
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ASSERT_EQ(IKey("foo", 100, kTypeValue),
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Shorten(IKey("foo", 100, kTypeValue),
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IKey("foobar", 200, kTypeValue)));
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// When limit user key is prefix of start user key
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ASSERT_EQ(IKey("foobar", 100, kTypeValue),
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Shorten(IKey("foobar", 100, kTypeValue),
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IKey("foo", 200, kTypeValue)));
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}
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TEST(FormatTest, InternalKeyShortestSuccessor) {
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ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
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ShortSuccessor(IKey("foo", 100, kTypeValue)));
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ASSERT_EQ(IKey("\xff\xff", 100, kTypeValue),
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ShortSuccessor(IKey("\xff\xff", 100, kTypeValue)));
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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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