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+// Copyright (c) 2018 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 "util/no_destructor.h"
+
+#include <cstdint>
+#include <cstdlib>
+#include <utility>
+
+#include "gtest/gtest.h"
+
+namespace leveldb {
+
+namespace {
+
+struct DoNotDestruct {
+ public:
+ DoNotDestruct(uint32_t a, uint64_t b) : a(a), b(b) {}
+ ~DoNotDestruct() { std::abort(); }
+
+ // Used to check constructor argument forwarding.
+ uint32_t a;
+ uint64_t b;
+};
+
+constexpr const uint32_t kGoldenA = 0xdeadbeef;
+constexpr const uint64_t kGoldenB = 0xaabbccddeeffaabb;
+
+} // namespace
+
+TEST(NoDestructorTest, StackInstance) {
+ NoDestructor<DoNotDestruct> instance(kGoldenA, kGoldenB);
+ ASSERT_EQ(kGoldenA, instance.get()->a);
+ ASSERT_EQ(kGoldenB, instance.get()->b);
+}
+
+TEST(NoDestructorTest, StaticInstance) {
+ static NoDestructor<DoNotDestruct> instance(kGoldenA, kGoldenB);
+ ASSERT_EQ(kGoldenA, instance.get()->a);
+ ASSERT_EQ(kGoldenB, instance.get()->b);
+}
+
+} // namespace leveldb