rocksdb/db/range_del_aggregator_test.cc

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// Copyright (c) 2016-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.
// This source code is also licensed under the GPLv2 license found in the
// COPYING file in the root directory of this source tree.
#include <algorithm>
#include "db/db_test_util.h"
#include "db/range_del_aggregator.h"
#include "rocksdb/comparator.h"
#include "util/testutil.h"
namespace rocksdb {
class RangeDelAggregatorTest : public testing::Test {};
namespace {
struct ExpectedPoint {
Slice begin;
SequenceNumber seq;
};
enum Direction {
kForward,
kReverse,
};
void VerifyRangeDels(const std::vector<RangeTombstone>& range_dels,
const std::vector<ExpectedPoint>& expected_points) {
// Test same result regardless of which order the range deletions are added.
for (Direction dir : {kForward, kReverse}) {
auto icmp = InternalKeyComparator(BytewiseComparator());
RangeDelAggregator range_del_agg(icmp, {} /* snapshots */, true);
std::vector<std::string> keys, values;
for (const auto& range_del : range_dels) {
auto key_and_value = range_del.Serialize();
keys.push_back(key_and_value.first.Encode().ToString());
values.push_back(key_and_value.second.ToString());
}
if (dir == kReverse) {
std::reverse(keys.begin(), keys.end());
std::reverse(values.begin(), values.end());
}
std::unique_ptr<test::VectorIterator> range_del_iter(
new test::VectorIterator(keys, values));
range_del_agg.AddTombstones(std::move(range_del_iter));
for (const auto expected_point : expected_points) {
ParsedInternalKey parsed_key;
parsed_key.user_key = expected_point.begin;
parsed_key.sequence = expected_point.seq;
parsed_key.type = kTypeValue;
ASSERT_FALSE(range_del_agg.ShouldDelete(
parsed_key,
RangeDelAggregator::RangePositioningMode::kForwardTraversal));
if (parsed_key.sequence > 0) {
--parsed_key.sequence;
ASSERT_TRUE(range_del_agg.ShouldDelete(
parsed_key,
RangeDelAggregator::RangePositioningMode::kForwardTraversal));
}
}
}
}
} // anonymous namespace
TEST_F(RangeDelAggregatorTest, Empty) { VerifyRangeDels({}, {{"a", 0}}); }
TEST_F(RangeDelAggregatorTest, SameStartAndEnd) {
VerifyRangeDels({{"a", "a", 5}}, {{" ", 0}, {"a", 0}, {"b", 0}});
}
TEST_F(RangeDelAggregatorTest, Single) {
VerifyRangeDels({{"a", "b", 10}}, {{" ", 0}, {"a", 10}, {"b", 0}});
}
TEST_F(RangeDelAggregatorTest, OverlapAboveLeft) {
VerifyRangeDels({{"a", "c", 10}, {"b", "d", 5}},
{{" ", 0}, {"a", 10}, {"c", 5}, {"d", 0}});
}
TEST_F(RangeDelAggregatorTest, OverlapAboveRight) {
VerifyRangeDels({{"a", "c", 5}, {"b", "d", 10}},
{{" ", 0}, {"a", 5}, {"b", 10}, {"d", 0}});
}
TEST_F(RangeDelAggregatorTest, OverlapAboveMiddle) {
VerifyRangeDels({{"a", "d", 5}, {"b", "c", 10}},
{{" ", 0}, {"a", 5}, {"b", 10}, {"c", 5}, {"d", 0}});
}
TEST_F(RangeDelAggregatorTest, OverlapFully) {
VerifyRangeDels({{"a", "d", 10}, {"b", "c", 5}},
{{" ", 0}, {"a", 10}, {"d", 0}});
}
TEST_F(RangeDelAggregatorTest, OverlapPoint) {
VerifyRangeDels({{"a", "b", 5}, {"b", "c", 10}},
{{" ", 0}, {"a", 5}, {"b", 10}, {"c", 0}});
}
TEST_F(RangeDelAggregatorTest, SameStartKey) {
VerifyRangeDels({{"a", "c", 5}, {"a", "b", 10}},
{{" ", 0}, {"a", 10}, {"b", 5}, {"c", 0}});
}
TEST_F(RangeDelAggregatorTest, SameEndKey) {
VerifyRangeDels({{"a", "d", 5}, {"b", "d", 10}},
{{" ", 0}, {"a", 5}, {"b", 10}, {"d", 0}});
}
TEST_F(RangeDelAggregatorTest, GapsBetweenRanges) {
VerifyRangeDels(
{{"a", "b", 5}, {"c", "d", 10}, {"e", "f", 15}},
{{" ", 0}, {"a", 5}, {"b", 0}, {"c", 10}, {"d", 0}, {"e", 15}, {"f", 0}});
}
// Note the Cover* tests also test cases where tombstones are inserted under a
// larger one when VerifyRangeDels() runs them in reverse
TEST_F(RangeDelAggregatorTest, CoverMultipleFromLeft) {
VerifyRangeDels(
{{"b", "d", 5}, {"c", "f", 10}, {"e", "g", 15}, {"a", "f", 20}},
{{" ", 0}, {"a", 20}, {"f", 15}, {"g", 0}});
}
TEST_F(RangeDelAggregatorTest, CoverMultipleFromRight) {
VerifyRangeDels(
{{"b", "d", 5}, {"c", "f", 10}, {"e", "g", 15}, {"c", "h", 20}},
{{" ", 0}, {"b", 5}, {"c", 20}, {"h", 0}});
}
TEST_F(RangeDelAggregatorTest, CoverMultipleFully) {
VerifyRangeDels(
{{"b", "d", 5}, {"c", "f", 10}, {"e", "g", 15}, {"a", "h", 20}},
{{" ", 0}, {"a", 20}, {"h", 0}});
}
TEST_F(RangeDelAggregatorTest, AlternateMultipleAboveBelow) {
VerifyRangeDels(
{{"b", "d", 15}, {"c", "f", 10}, {"e", "g", 20}, {"a", "h", 5}},
{{" ", 0},
{"a", 5},
{"b", 15},
{"d", 10},
{"e", 20},
{"g", 5},
{"h", 0}});
}
} // namespace rocksdb
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}