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+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/container/internal/node_hash_policy.h"
+
+#include <memory>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "absl/container/internal/hash_policy_traits.h"
+
+namespace absl {
+inline namespace lts_2018_12_18 {
+namespace container_internal {
+namespace {
+
+using ::testing::Pointee;
+
+struct Policy : node_hash_policy<int&, Policy> {
+ using key_type = int;
+ using init_type = int;
+
+ template <class Alloc>
+ static int* new_element(Alloc* alloc, int value) {
+ return new int(value);
+ }
+
+ template <class Alloc>
+ static void delete_element(Alloc* alloc, int* elem) {
+ delete elem;
+ }
+};
+
+using NodePolicy = hash_policy_traits<Policy>;
+
+struct NodeTest : ::testing::Test {
+ std::allocator<int> alloc;
+ int n = 53;
+ int* a = &n;
+};
+
+TEST_F(NodeTest, ConstructDestroy) {
+ NodePolicy::construct(&alloc, &a, 42);
+ EXPECT_THAT(a, Pointee(42));
+ NodePolicy::destroy(&alloc, &a);
+}
+
+TEST_F(NodeTest, transfer) {
+ int s = 42;
+ int* b = &s;
+ NodePolicy::transfer(&alloc, &a, &b);
+ EXPECT_EQ(&s, a);
+}
+
+} // namespace
+} // namespace container_internal
+} // inline namespace lts_2018_12_18
+} // namespace absl