node_slot_policy_test.cc (1790B)
1 // Copyright 2018 The Abseil Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "absl/container/internal/node_slot_policy.h" 16 17 #include <memory> 18 19 #include "gmock/gmock.h" 20 #include "gtest/gtest.h" 21 #include "absl/base/config.h" 22 #include "absl/container/internal/hash_policy_traits.h" 23 24 namespace absl { 25 ABSL_NAMESPACE_BEGIN 26 namespace container_internal { 27 namespace { 28 29 using ::testing::Pointee; 30 31 struct Policy : node_slot_policy<int&, Policy> { 32 using key_type = int; 33 using init_type = int; 34 35 template <class Alloc> 36 static int* new_element(Alloc* alloc, int value) { 37 return new int(value); 38 } 39 40 template <class Alloc> 41 static void delete_element(Alloc* alloc, int* elem) { 42 delete elem; 43 } 44 }; 45 46 using NodePolicy = hash_policy_traits<Policy>; 47 48 struct NodeTest : ::testing::Test { 49 std::allocator<int> alloc; 50 int n = 53; 51 int* a = &n; 52 }; 53 54 TEST_F(NodeTest, ConstructDestroy) { 55 NodePolicy::construct(&alloc, &a, 42); 56 EXPECT_THAT(a, Pointee(42)); 57 NodePolicy::destroy(&alloc, &a); 58 } 59 60 TEST_F(NodeTest, transfer) { 61 int s = 42; 62 int* b = &s; 63 NodePolicy::transfer(&alloc, &a, &b); 64 EXPECT_EQ(&s, a); 65 EXPECT_TRUE(NodePolicy::transfer_uses_memcpy()); 66 } 67 68 } // namespace 69 } // namespace container_internal 70 ABSL_NAMESPACE_END 71 } // namespace absl