mirror of https://github.com/facebook/rocksdb.git
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "utilities/merge_operators.h"
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namespace ROCKSDB_NAMESPACE {
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class UtilMergeOperatorTest : public testing::Test {
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public:
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UtilMergeOperatorTest() {}
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std::string FullMergeV2(std::string existing_value,
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std::vector<std::string> operands,
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std::string key = "") {
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std::string result;
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Slice result_operand(nullptr, 0);
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Slice existing_value_slice(existing_value);
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std::vector<Slice> operands_slice(operands.begin(), operands.end());
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const MergeOperator::MergeOperationInput merge_in(
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key, &existing_value_slice, operands_slice, nullptr);
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MergeOperator::MergeOperationOutput merge_out(result, result_operand);
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merge_operator_->FullMergeV2(merge_in, &merge_out);
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if (result_operand.data()) {
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result.assign(result_operand.data(), result_operand.size());
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}
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return result;
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}
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std::string FullMergeV2(std::vector<std::string> operands,
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std::string key = "") {
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std::string result;
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Slice result_operand(nullptr, 0);
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std::vector<Slice> operands_slice(operands.begin(), operands.end());
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const MergeOperator::MergeOperationInput merge_in(key, nullptr,
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operands_slice, nullptr);
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MergeOperator::MergeOperationOutput merge_out(result, result_operand);
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merge_operator_->FullMergeV2(merge_in, &merge_out);
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if (result_operand.data()) {
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result.assign(result_operand.data(), result_operand.size());
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}
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return result;
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}
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std::string PartialMerge(std::string left, std::string right,
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std::string key = "") {
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std::string result;
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merge_operator_->PartialMerge(key, left, right, &result, nullptr);
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return result;
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}
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std::string PartialMergeMulti(std::deque<std::string> operands,
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std::string key = "") {
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std::string result;
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std::deque<Slice> operands_slice(operands.begin(), operands.end());
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merge_operator_->PartialMergeMulti(key, operands_slice, &result, nullptr);
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return result;
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}
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protected:
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std::shared_ptr<MergeOperator> merge_operator_;
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};
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TEST_F(UtilMergeOperatorTest, MaxMergeOperator) {
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merge_operator_ = MergeOperators::CreateMaxOperator();
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EXPECT_EQ("B", FullMergeV2("B", {"A"}));
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EXPECT_EQ("B", FullMergeV2("A", {"B"}));
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EXPECT_EQ("", FullMergeV2({"", "", ""}));
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EXPECT_EQ("A", FullMergeV2({"A"}));
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EXPECT_EQ("ABC", FullMergeV2({"ABC"}));
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EXPECT_EQ("Z", FullMergeV2({"ABC", "Z", "C", "AXX"}));
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EXPECT_EQ("ZZZ", FullMergeV2({"ABC", "CC", "Z", "ZZZ"}));
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EXPECT_EQ("a", FullMergeV2("a", {"ABC", "CC", "Z", "ZZZ"}));
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EXPECT_EQ("z", PartialMergeMulti({"a", "z", "efqfqwgwew", "aaz", "hhhhh"}));
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EXPECT_EQ("b", PartialMerge("a", "b"));
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EXPECT_EQ("z", PartialMerge("z", "azzz"));
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EXPECT_EQ("a", PartialMerge("a", ""));
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}
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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