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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 "db/dbformat.h"
#include "logging/logging.h"
#include "test_util/testharness.h"
namespace ROCKSDB_NAMESPACE {
static std::string IKey(const std::string& user_key,
uint64_t seq,
ValueType vt) {
std::string encoded;
AppendInternalKey(&encoded, ParsedInternalKey(user_key, seq, vt));
return encoded;
}
static std::string Shorten(const std::string& s, const std::string& l) {
std::string result = s;
InternalKeyComparator(BytewiseComparator()).FindShortestSeparator(&result, l);
return result;
}
static std::string ShortSuccessor(const std::string& s) {
std::string result = s;
InternalKeyComparator(BytewiseComparator()).FindShortSuccessor(&result);
return result;
}
static void TestKey(const std::string& key,
uint64_t seq,
ValueType vt) {
std::string encoded = IKey(key, seq, vt);
Slice in(encoded);
ParsedInternalKey decoded("", 0, kTypeValue);
ASSERT_TRUE(ParseInternalKey(in, &decoded));
ASSERT_EQ(key, decoded.user_key.ToString());
ASSERT_EQ(seq, decoded.sequence);
ASSERT_EQ(vt, decoded.type);
ASSERT_TRUE(!ParseInternalKey(Slice("bar"), &decoded));
}
class FormatTest : public testing::Test {};
TEST_F(FormatTest, InternalKey_EncodeDecode) {
const char* keys[] = { "", "k", "hello", "longggggggggggggggggggggg" };
const uint64_t seq[] = {
1, 2, 3,
(1ull << 8) - 1, 1ull << 8, (1ull << 8) + 1,
(1ull << 16) - 1, 1ull << 16, (1ull << 16) + 1,
(1ull << 32) - 1, 1ull << 32, (1ull << 32) + 1
};
for (unsigned int k = 0; k < sizeof(keys) / sizeof(keys[0]); k++) {
for (unsigned int s = 0; s < sizeof(seq) / sizeof(seq[0]); s++) {
TestKey(keys[k], seq[s], kTypeValue);
TestKey("hello", 1, kTypeDeletion);
}
}
}
TEST_F(FormatTest, InternalKeyShortSeparator) {
// When user keys are same
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("foo", 99, kTypeValue)));
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("foo", 101, kTypeValue)));
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("foo", 100, kTypeValue)));
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("foo", 100, kTypeDeletion)));
// When user keys are misordered
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("bar", 99, kTypeValue)));
// When user keys are different, but correctly ordered
ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("foo", 100, kTypeValue),
IKey("hello", 200, kTypeValue)));
ASSERT_EQ(IKey("ABC2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("ABC1AAAAA", 100, kTypeValue),
IKey("ABC2ABB", 200, kTypeValue)));
ASSERT_EQ(IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue),
IKey("AAA2AA", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue), IKey("AAA4", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA1B", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue), IKey("AAA2", 200, kTypeValue)));
ASSERT_EQ(IKey("AAA2", kMaxSequenceNumber, kValueTypeForSeek),
Shorten(IKey("AAA1AAA", 100, kTypeValue),
IKey("AAA2A", 200, kTypeValue)));
ASSERT_EQ(
IKey("AAA1", 100, kTypeValue),
Shorten(IKey("AAA1", 100, kTypeValue), IKey("AAA2", 200, kTypeValue)));
// When start user key is prefix of limit user key
ASSERT_EQ(IKey("foo", 100, kTypeValue),
Shorten(IKey("foo", 100, kTypeValue),
IKey("foobar", 200, kTypeValue)));
// When limit user key is prefix of start user key
ASSERT_EQ(IKey("foobar", 100, kTypeValue),
Shorten(IKey("foobar", 100, kTypeValue),
IKey("foo", 200, kTypeValue)));
}
TEST_F(FormatTest, InternalKeyShortestSuccessor) {
ASSERT_EQ(IKey("g", kMaxSequenceNumber, kValueTypeForSeek),
ShortSuccessor(IKey("foo", 100, kTypeValue)));
ASSERT_EQ(IKey("\xff\xff", 100, kTypeValue),
ShortSuccessor(IKey("\xff\xff", 100, kTypeValue)));
}
TEST_F(FormatTest, IterKeyOperation) {
IterKey k;
const char p[] = "abcdefghijklmnopqrstuvwxyz";
const char q[] = "0123456789";
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string(""));
k.TrimAppend(0, p, 3);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abc"));
k.TrimAppend(1, p, 3);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("aabc"));
k.TrimAppend(0, p, 26);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz"));
k.TrimAppend(26, q, 10);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0123456789"));
k.TrimAppend(36, q, 1);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz01234567890"));
k.TrimAppend(26, q, 1);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0"));
// Size going up, memory allocation is triggered
k.TrimAppend(27, p, 26);
ASSERT_EQ(std::string(k.GetUserKey().data(), k.GetUserKey().size()),
std::string("abcdefghijklmnopqrstuvwxyz0"
"abcdefghijklmnopqrstuvwxyz"));
}
TEST_F(FormatTest, UpdateInternalKey) {
std::string user_key("abcdefghijklmnopqrstuvwxyz");
uint64_t new_seq = 0x123456;
ValueType new_val_type = kTypeDeletion;
std::string ikey;
AppendInternalKey(&ikey, ParsedInternalKey(user_key, 100U, kTypeValue));
size_t ikey_size = ikey.size();
UpdateInternalKey(&ikey, new_seq, new_val_type);
ASSERT_EQ(ikey_size, ikey.size());
Slice in(ikey);
ParsedInternalKey decoded;
ASSERT_TRUE(ParseInternalKey(in, &decoded));
ASSERT_EQ(user_key, decoded.user_key.ToString());
ASSERT_EQ(new_seq, decoded.sequence);
ASSERT_EQ(new_val_type, decoded.type);
}
TEST_F(FormatTest, RangeTombstoneSerializeEndKey) {
RangeTombstone t("a", "b", 2);
InternalKey k("b", 3, kTypeValue);
const InternalKeyComparator cmp(BytewiseComparator());
ASSERT_LT(cmp.Compare(t.SerializeEndKey(), k), 0);
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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