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// Copyright 2013 Daniel James.
// Copyright 2022-2023 Christian Mazakas.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include "../helpers/unordered.hpp"
#include "../helpers/fwd.hpp"
#include "../helpers/test.hpp"
#if defined(BOOST_MSVC)
#pragma warning(push)
// conditional expression is constant
#pragma warning(disable : 4127)
#endif
namespace noexcept_tests {
// Test the noexcept is set correctly for the move constructor.
struct hash_possible_exception : boost::hash<int>
{
hash_possible_exception(hash_possible_exception const&) {}
hash_possible_exception& operator=(hash_possible_exception const&)
{
return *this;
}
};
struct equal_to_possible_exception : std::equal_to<int>
{
equal_to_possible_exception(equal_to_possible_exception const&) {}
equal_to_possible_exception& operator=(equal_to_possible_exception const&)
{
return *this;
}
};
// Test that the move constructor does actually move without throwing
// an exception when it claims to.
struct test_exception
{
};
bool throwing_test_exception = false;
void test_throw(char const* name)
{
if (throwing_test_exception) {
BOOST_LIGHTWEIGHT_TEST_OSTREAM << "Throw exception in: " << name
<< std::endl;
throw test_exception();
}
}
template <bool nothrow_move_construct, bool nothrow_move_assign,
bool nothrow_swap>
class hash_nothrow : boost::hash<int>
{
typedef boost::hash<int> base;
public:
hash_nothrow(hash_nothrow&&) noexcept(nothrow_move_construct)
{
if (!nothrow_move_construct) {
test_throw("Move Constructor");
}
}
hash_nothrow() { test_throw("Constructor"); }
hash_nothrow(hash_nothrow const&) { test_throw("Copy"); }
hash_nothrow& operator=(hash_nothrow const&)
{
test_throw("Assign");
return *this;
}
hash_nothrow& operator=(hash_nothrow&&)
noexcept(nothrow_move_assign)
{
if (!nothrow_move_assign) {
test_throw("Move Assign");
}
return *this;
}
std::size_t operator()(int x) const
{
test_throw("Operator");
return static_cast<base const&>(*this)(x);
}
friend void swap(hash_nothrow&, hash_nothrow&) noexcept(nothrow_swap)
{
if (!nothrow_swap) {
test_throw("Swap");
}
}
};
typedef hash_nothrow<true, false, false> hash_nothrow_move_construct;
typedef hash_nothrow<false, true, false> hash_nothrow_move_assign;
typedef hash_nothrow<false, false, true> hash_nothrow_swap;
template <bool nothrow_move_construct, bool nothrow_move_assign,
bool nothrow_swap>
class equal_to_nothrow
{
typedef boost::hash<int> base;
public:
equal_to_nothrow(equal_to_nothrow&&)
noexcept(nothrow_move_construct)
{
if (!nothrow_move_construct) {
test_throw("Move Constructor");
}
}
equal_to_nothrow() { test_throw("Constructor"); }
equal_to_nothrow(equal_to_nothrow const&) { test_throw("Copy"); }
equal_to_nothrow& operator=(equal_to_nothrow const&)
{
test_throw("Assign");
return *this;
}
equal_to_nothrow& operator=(equal_to_nothrow&&)
noexcept(nothrow_move_assign)
{
if (!nothrow_move_assign) {
test_throw("Move Assign");
}
return *this;
}
std::size_t operator()(int x, int y) const
{
test_throw("Operator");
return x == y;
}
friend void swap(equal_to_nothrow&, equal_to_nothrow&)
noexcept(nothrow_swap)
{
if (!nothrow_swap) {
test_throw("Swap");
}
}
};
typedef equal_to_nothrow<true, false, false> equal_to_nothrow_move_construct;
typedef equal_to_nothrow<false, true, false> equal_to_nothrow_move_assign;
typedef equal_to_nothrow<false, false, true> equal_to_nothrow_swap;
bool have_is_nothrow_move = false;
bool have_is_nothrow_move_assign = false;
bool have_is_nothrow_swap = false;
UNORDERED_AUTO_TEST (check_is_nothrow_move) {
BOOST_TEST(
!boost::is_nothrow_move_constructible<hash_possible_exception>::value);
BOOST_TEST(
!boost::is_nothrow_move_assignable<hash_possible_exception>::value);
BOOST_TEST(!boost::is_nothrow_swappable<hash_possible_exception>::value);
BOOST_TEST((!boost::is_nothrow_move_constructible<
equal_to_nothrow<false, false, false> >::value));
BOOST_TEST((!boost::is_nothrow_move_assignable<
equal_to_nothrow<false, false, false> >::value));
BOOST_TEST((!boost::is_nothrow_swappable<
equal_to_nothrow<false, false, false> >::value));
have_is_nothrow_move =
boost::is_nothrow_move_constructible<hash_nothrow_move_construct>::value;
have_is_nothrow_move_assign =
boost::is_nothrow_move_assignable<hash_nothrow_move_assign>::value;
have_is_nothrow_swap =
boost::is_nothrow_swappable<hash_nothrow_swap>::value;
// Check that the traits work when expected.
BOOST_TEST(have_is_nothrow_move);
BOOST_TEST(have_is_nothrow_move_assign);
BOOST_TEST(have_is_nothrow_swap);
BOOST_LIGHTWEIGHT_TEST_OSTREAM
<< "have_is_nothrow_move: " << have_is_nothrow_move << std::endl
<< "have_is_nothrow_swap: " << have_is_nothrow_swap << std::endl;
}
UNORDERED_AUTO_TEST (test_noexcept) {
if (have_is_nothrow_move) {
#ifdef BOOST_UNORDERED_FOA_TESTS
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_flat_set<int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_flat_map<int, int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_node_set<int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_node_map<int, int> >::value));
#else
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_set<int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_multiset<int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_map<int, int> >::value));
BOOST_TEST((boost::is_nothrow_move_constructible<
boost::unordered_multimap<int, int> >::value));
#endif
}
#ifdef BOOST_UNORDERED_FOA_TESTS
BOOST_TEST(
(!boost::is_nothrow_move_constructible<
boost::unordered_flat_set<int, hash_possible_exception> >::value));
BOOST_TEST(
(!boost::is_nothrow_move_constructible<boost::unordered_flat_set<int,
boost::hash<int>, equal_to_possible_exception> >::value));
BOOST_TEST(
(!boost::is_nothrow_move_constructible<
boost::unordered_node_set<int, hash_possible_exception> >::value));
BOOST_TEST(
(!boost::is_nothrow_move_constructible<boost::unordered_node_set<int,
boost::hash<int>, equal_to_possible_exception> >::value));
#else
BOOST_TEST((!boost::is_nothrow_move_constructible<
boost::unordered_set<int, hash_possible_exception> >::value));
BOOST_TEST(
(!boost::is_nothrow_move_constructible<boost::unordered_multiset<int,
boost::hash<int>, equal_to_possible_exception> >::value));
#endif
}
template <class X> static void test_nothrow_move_when_noexcept(X*)
{
if (have_is_nothrow_move) {
BOOST_TEST(boost::is_nothrow_move_constructible<X>::value);
}
throwing_test_exception = false;
X x1;
x1.insert(10);
x1.insert(50);
try {
throwing_test_exception = true;
X x2 = std::move(x1);
BOOST_TEST(x2.size() == 2);
BOOST_TEST(*x2.begin() == 10 || *x2.begin() == 50);
BOOST_TEST(have_is_nothrow_move);
} catch (test_exception) {
BOOST_TEST(!have_is_nothrow_move);
}
throwing_test_exception = false;
}
template <class T>
void test_nothrow_move_assign_when_noexcept(T*, test::random_generator const&)
{
{
if (have_is_nothrow_move_assign) {
BOOST_TEST(boost::is_nothrow_move_assignable<T>::value);
}
throwing_test_exception = false;
T x1;
T x2;
x1.insert(10);
x1.insert(50);
for (int i = 0; i < 100; ++i) {
x2.insert(i);
}
try {
throwing_test_exception = true;
x2 = std::move(x1);
BOOST_TEST(x2.size() == 2);
BOOST_TEST(*x2.begin() == 10 || *x2.begin() == 50);
BOOST_TEST(have_is_nothrow_move_assign);
} catch (test_exception) {
BOOST_TEST(!have_is_nothrow_move_assign);
}
throwing_test_exception = false;
}
{
if (have_is_nothrow_move_assign) {
BOOST_TEST(boost::is_nothrow_move_assignable<T>::value);
}
throwing_test_exception = false;
T x1;
T x2;
x1.insert(10);
x1.insert(50);
for (int i = 0; i < 100; ++i) {
x2.insert(i);
}
try {
throwing_test_exception = true;
x1 = std::move(x2);
BOOST_TEST(x1.size() == 100);
BOOST_TEST(have_is_nothrow_move_assign);
} catch (test_exception) {
BOOST_TEST(!have_is_nothrow_move_assign);
}
throwing_test_exception = false;
}
}
template <class X> static void test_nothrow_swap_when_noexcept(X*)
{
if (have_is_nothrow_swap) {
BOOST_TEST(boost::is_nothrow_swappable<X>::value);
}
throwing_test_exception = false;
X x1;
X x2;
x1.insert(10);
x1.insert(50);
for (int i = 0; i < 100; ++i) {
x2.insert(i);
}
try {
throwing_test_exception = true;
x1.swap(x2);
BOOST_TEST(x1.size() == 100);
BOOST_TEST(x2.size() == 2);
BOOST_TEST(*x2.begin() == 10 || *x2.begin() == 50);
BOOST_TEST(have_is_nothrow_swap);
} catch (test_exception) {
BOOST_TEST(!have_is_nothrow_swap);
}
throwing_test_exception = false;
}
} // namespace noexcept_tests
#if defined(BOOST_MSVC)
#pragma warning(pop)
#endif
template <class T> class allocator1
{
allocator1 operator=(allocator1 const&);
allocator1 operator=(allocator1&&);
public:
typedef T value_type;
allocator1() {}
allocator1(allocator1 const&) {}
template <class U> allocator1(allocator1<U> const&) {}
T* allocate(std::size_t n)
{
noexcept_tests::test_throw("Allocate");
return static_cast<T*>(::operator new(n * sizeof(T)));
}
void deallocate(T* p, std::size_t) { ::operator delete(p); }
friend bool operator==(allocator1 const&, allocator1 const&) { return true; }
friend bool operator!=(allocator1 const&, allocator1 const&) { return false; }
};
template <class T> class allocator2
{
allocator2 operator=(allocator2 const&);
public:
typedef T value_type;
typedef boost::true_type propagate_on_container_move_assignment;
allocator2() {}
allocator2(allocator2 const&) {}
template <class U> allocator2(allocator2<U> const&) {}
allocator2& operator=(allocator2&&) { return *this; }
T* allocate(std::size_t n)
{
noexcept_tests::test_throw("Allocate");
return static_cast<T*>(::operator new(n * sizeof(T)));
}
void deallocate(T* p, std::size_t) { ::operator delete(p); }
friend bool operator==(allocator2 const&, allocator2 const&) { return true; }
friend bool operator!=(allocator2 const&, allocator2 const&) { return false; }
};
UNORDERED_AUTO_TEST (prelim_allocator_checks) {
BOOST_TEST(boost::allocator_is_always_equal<allocator1<int> >::type::value);
BOOST_TEST(!boost::allocator_propagate_on_container_move_assignment<
allocator1<int> >::type::value);
BOOST_TEST(boost::allocator_is_always_equal<allocator2<int> >::type::value);
BOOST_TEST(boost::allocator_propagate_on_container_move_assignment<
allocator2<int> >::type::value);
}
using test::default_generator;
#ifdef BOOST_UNORDERED_FOA_TESTS
boost::unordered_flat_set<int, noexcept_tests::hash_nothrow_move_construct,
noexcept_tests::equal_to_nothrow_move_construct>* throwing_set;
boost::unordered_flat_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap>* throwing_set2;
boost::unordered_flat_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap, allocator1<int> >* throwing_set_alloc1;
boost::unordered_flat_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap, allocator2<int> >* throwing_set_alloc2;
boost::unordered_node_set<int, noexcept_tests::hash_nothrow_move_construct,
noexcept_tests::equal_to_nothrow_move_construct>* throwing_node_set;
boost::unordered_node_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap>* throwing_node_set2;
boost::unordered_node_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap, allocator1<int> >*
throwing_node_set_alloc1;
boost::unordered_node_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap, allocator2<int> >*
throwing_node_set_alloc2;
// clang-format off
UNORDERED_TEST(
test_nothrow_move_when_noexcept, ((throwing_set)(throwing_node_set)))
UNORDERED_TEST(
test_nothrow_swap_when_noexcept, ((throwing_set2)(throwing_node_set2)))
UNORDERED_TEST(test_nothrow_move_assign_when_noexcept,
((throwing_set_alloc1)(throwing_set_alloc2)
(throwing_node_set_alloc1)(throwing_node_set_alloc2))(
(default_generator)))
// clang-format on
#else
boost::unordered_set<int, noexcept_tests::hash_nothrow_move_construct,
noexcept_tests::equal_to_nothrow_move_construct>* throwing_set;
boost::unordered_set<int, noexcept_tests::hash_nothrow_swap,
noexcept_tests::equal_to_nothrow_swap>* throwing_set2;
boost::unordered_set<int, noexcept_tests::hash_nothrow_move_assign,
noexcept_tests::equal_to_nothrow_move_assign, allocator1<int> >*
throwing_set_alloc1;
boost::unordered_set<int, noexcept_tests::hash_nothrow_move_assign,
noexcept_tests::equal_to_nothrow_move_assign, allocator2<int> >*
throwing_set_alloc2;
UNORDERED_TEST(test_nothrow_move_when_noexcept, ((throwing_set)))
UNORDERED_TEST(test_nothrow_swap_when_noexcept, ((throwing_set2)))
UNORDERED_TEST(test_nothrow_move_assign_when_noexcept,
((throwing_set_alloc1)(throwing_set_alloc2))((default_generator)))
#endif
RUN_TESTS()