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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
//
// https://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/node_hash_set.h"
#include <cstddef>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/config.h"
#include "absl/container/internal/hash_generator_testing.h"
#include "absl/container/internal/hash_policy_testing.h"
#include "absl/container/internal/unordered_set_constructor_test.h"
#include "absl/container/internal/unordered_set_lookup_test.h"
#include "absl/container/internal/unordered_set_members_test.h"
#include "absl/container/internal/unordered_set_modifiers_test.h"
#include "absl/memory/memory.h"
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace container_internal {
namespace {
using ::absl::container_internal::hash_internal::Enum;
using ::absl::container_internal::hash_internal::EnumClass;
using ::testing::IsEmpty;
using ::testing::Pointee;
using ::testing::UnorderedElementsAre;
using ::testing::UnorderedElementsAreArray;
using SetTypes = ::testing::Types<
node_hash_set<int, StatefulTestingHash, StatefulTestingEqual, Alloc<int>>,
node_hash_set<std::string, StatefulTestingHash, StatefulTestingEqual,
Alloc<std::string>>,
node_hash_set<Enum, StatefulTestingHash, StatefulTestingEqual, Alloc<Enum>>,
node_hash_set<EnumClass, StatefulTestingHash, StatefulTestingEqual,
Alloc<EnumClass>>>;
INSTANTIATE_TYPED_TEST_SUITE_P(NodeHashSet, ConstructorTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(NodeHashSet, LookupTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(NodeHashSet, MembersTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(NodeHashSet, ModifiersTest, SetTypes);
TEST(NodeHashSet, MoveableNotCopyableCompiles) {
node_hash_set<std::unique_ptr<void*>> t;
node_hash_set<std::unique_ptr<void*>> u;
u = std::move(t);
}
TEST(NodeHashSet, MergeExtractInsert) {
struct Hash {
size_t operator()(const std::unique_ptr<int>& p) const { return *p; }
};
struct Eq {
bool operator()(const std::unique_ptr<int>& a,
const std::unique_ptr<int>& b) const {
return *a == *b;
}
};
absl::node_hash_set<std::unique_ptr<int>, Hash, Eq> set1, set2;
set1.insert(absl::make_unique<int>(7));
set1.insert(absl::make_unique<int>(17));
set2.insert(absl::make_unique<int>(7));
set2.insert(absl::make_unique<int>(19));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(7), Pointee(17)));
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7), Pointee(19)));
set1.merge(set2);
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(7), Pointee(17), Pointee(19)));
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7)));
auto node = set1.extract(absl::make_unique<int>(7));
EXPECT_TRUE(node);
EXPECT_THAT(node.value(), Pointee(7));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(17), Pointee(19)));
auto insert_result = set2.insert(std::move(node));
EXPECT_FALSE(node);
EXPECT_FALSE(insert_result.inserted);
EXPECT_TRUE(insert_result.node);
EXPECT_THAT(insert_result.node.value(), Pointee(7));
EXPECT_EQ(**insert_result.position, 7);
EXPECT_NE(insert_result.position->get(), insert_result.node.value().get());
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7)));
node = set1.extract(absl::make_unique<int>(17));
EXPECT_TRUE(node);
EXPECT_THAT(node.value(), Pointee(17));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(19)));
node.value() = absl::make_unique<int>(23);
insert_result = set2.insert(std::move(node));
EXPECT_FALSE(node);
EXPECT_TRUE(insert_result.inserted);
EXPECT_FALSE(insert_result.node);
EXPECT_EQ(**insert_result.position, 23);
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7), Pointee(23)));
}
bool IsEven(int k) { return k % 2 == 0; }
TEST(NodeHashSet, EraseIf) {
// Erase all elements.
{
node_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int) { return true; }), 5);
EXPECT_THAT(s, IsEmpty());
}
// Erase no elements.
{
node_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int) { return false; }), 0);
EXPECT_THAT(s, UnorderedElementsAre(1, 2, 3, 4, 5));
}
// Erase specific elements.
{
node_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int k) { return k % 2 == 1; }), 3);
EXPECT_THAT(s, UnorderedElementsAre(2, 4));
}
// Predicate is function reference.
{
node_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, IsEven), 2);
EXPECT_THAT(s, UnorderedElementsAre(1, 3, 5));
}
// Predicate is function pointer.
{
node_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, &IsEven), 2);
EXPECT_THAT(s, UnorderedElementsAre(1, 3, 5));
}
}
TEST(NodeHashSet, CForEach) {
using ValueType = std::pair<int, int>;
node_hash_set<ValueType> s;
std::vector<ValueType> expected;
for (int i = 0; i < 100; ++i) {
{
SCOPED_TRACE("mutable object iteration");
std::vector<ValueType> v;
absl::container_internal::c_for_each_fast(
s, [&v](const ValueType& p) { v.push_back(p); });
ASSERT_THAT(v, UnorderedElementsAreArray(expected));
}
{
SCOPED_TRACE("const object iteration");
std::vector<ValueType> v;
const node_hash_set<ValueType>& cs = s;
absl::container_internal::c_for_each_fast(
cs, [&v](const ValueType& p) { v.push_back(p); });
ASSERT_THAT(v, UnorderedElementsAreArray(expected));
}
{
SCOPED_TRACE("temporary object iteration");
std::vector<ValueType> v;
absl::container_internal::c_for_each_fast(
node_hash_set<ValueType>(s),
[&v](const ValueType& p) { v.push_back(p); });
ASSERT_THAT(v, UnorderedElementsAreArray(expected));
}
s.emplace(i, i);
expected.emplace_back(i, i);
}
}
} // namespace
} // namespace container_internal
ABSL_NAMESPACE_END
} // namespace absl
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