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container/test/segtor_test.cpp

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C++

//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2025-2026. 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)
//
// See http://www.boost.org/libs/container for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <memory>
#include <vector>
#include <iostream>
#include <list>
#include <boost/container/segtor.hpp>
#include <boost/container/allocator.hpp>
#include "print_container.hpp"
#include "check_equal_containers.hpp"
#include "dummy_test_allocator.hpp"
#include "movable_int.hpp"
#include <boost/move/utility_core.hpp>
#include <boost/move/iterator.hpp>
#include <boost/container/detail/mpl.hpp>
#include <boost/container/detail/type_traits.hpp>
#include <string>
#include "emplace_test.hpp"
#include "propagate_allocator_test.hpp"
#include "vector_test.hpp"
#include "default_init_test.hpp"
#include "../../intrusive/test/iterator_test.hpp"
#include <boost/core/lightweight_test.hpp>
using namespace boost::container;
//Function to check if both sets are equal
// segtor does not provide front operations; only back/middle tests
template<class V1, class V2>
bool segtor_copyable_only(V1 &, V2 &, dtl::false_type)
{
return true;
}
template<class V1, class V2>
bool segtor_copyable_only(V1 &cntc, V2 &stdc, dtl::true_type)
{
typedef typename V1::value_type IntType;
std::size_t size = cntc.size();
stdc.insert(stdc.end(), 50u, 1);
cntc.insert(cntc.end(), 50u, IntType(1));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
{
IntType move_me(1);
stdc.insert(stdc.begin()+std::ptrdiff_t(size)/2, 50u, 1);
cntc.insert(cntc.begin()+std::ptrdiff_t(size/2), 50u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
{
IntType move_me(2);
cntc.assign(cntc.size()/2, boost::move(move_me));
stdc.assign(stdc.size()/2, 2);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
{
IntType move_me(1);
stdc.clear();
cntc.clear();
stdc.insert(stdc.begin(), 50u, 1);
cntc.insert(cntc.begin(), 50u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
stdc.insert(stdc.begin()+20, 50u, 1);
cntc.insert(cntc.begin()+20, 50u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
stdc.insert(stdc.begin()+20, 20u, 1);
cntc.insert(cntc.begin()+20, 20u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
{
IntType move_me(1);
stdc.clear();
cntc.clear();
stdc.insert(stdc.end(), 50u, 1);
cntc.insert(cntc.end(), 50u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
stdc.insert(stdc.end()-20, 50u, 1);
cntc.insert(cntc.end()-20, 50u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
stdc.insert(stdc.end()-20, 20u, 1);
cntc.insert(cntc.end()-20, 20u, boost::move(move_me));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
return true;
}
//Test recursive structures
class recursive_segtor
{
public:
recursive_segtor (const recursive_segtor &x)
: segtor_(x.segtor_)
{}
recursive_segtor & operator=(const recursive_segtor &x)
{ this->segtor_ = x.segtor_; return *this; }
segtor<recursive_segtor> segtor_;
segtor<recursive_segtor>::iterator it_;
segtor<recursive_segtor>::const_iterator cit_;
segtor<recursive_segtor>::reverse_iterator rit_;
segtor<recursive_segtor>::const_reverse_iterator crit_;
};
bool do_recursive_segtor_test()
{
//Test for recursive types
{
segtor<recursive_segtor> recursive_segtor_segtor;
}
{
//Now test move semantics
segtor<recursive_segtor> original;
segtor<recursive_segtor> move_ctor(boost::move(original));
segtor<recursive_segtor> move_assign;
move_assign = boost::move(move_ctor);
move_assign.swap(original);
}
return true;
}
template<class IntType, bool Reservable>
bool do_test()
{
typedef typename segtor_options<reservable<Reservable> >::type Options;
{
typedef segtor<IntType, void, Options> MyCnt;
::boost::movelib::unique_ptr<MyCnt> const pcntc = ::boost::movelib::make_unique<MyCnt>();
pcntc->erase(pcntc->cbegin(), pcntc->cend());
}
//Alias types
typedef segtor<IntType, void, Options> MyCnt;
typedef std::vector<int> MyStd;
const int max = 100;
{
::boost::movelib::unique_ptr<MyCnt> const pcntc = ::boost::movelib::make_unique<MyCnt>();
::boost::movelib::unique_ptr<MyStd> const pstdc = ::boost::movelib::make_unique<MyStd>();
MyCnt &cntc = *pcntc;
MyStd &stdc = *pstdc;
for(int i = 0; i < max*100; ++i){
IntType move_me(i);
cntc.insert(cntc.end(), boost::move(move_me));
stdc.insert(stdc.end(), i);
if(!test::CheckEqualContainers(cntc, stdc))
return false;
}
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.clear();
stdc.clear();
for(int i = 0; i < max*100; ++i){
IntType move_me(i);
cntc.push_back(boost::move(move_me));
stdc.push_back(i);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
if(!test::CheckEqualContainers(cntc, stdc)) return false;
typename MyCnt::iterator it;
typename MyCnt::const_iterator cit = it;
(void)cit;
cntc.erase(cntc.begin()++);
stdc.erase(stdc.begin()++);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.erase(cntc.begin()++));
stdc.erase(stdc.erase(stdc.begin()++));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.erase(cntc.begin()+3));
stdc.erase(stdc.erase(stdc.begin()+3));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.erase(cntc.end()-2));
stdc.erase(stdc.erase(stdc.end()-2));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.erase(cntc.end()-4));
stdc.erase(stdc.erase(stdc.end()-4));
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.begin());
stdc.erase(stdc.begin());
if(!test::CheckEqualContainers(cntc, stdc)) return false;
cntc.erase(cntc.end()-1);
stdc.erase(stdc.end()-1);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
{
//Initialize values
IntType aux_vect[50];
for(int i = 0; i < 50; ++i){
IntType move_me (-1);
aux_vect[i] = boost::move(move_me);
}
int aux_vect2[50];
for(int i = 0; i < 50; ++i){
aux_vect2[i] = -1;
}
cntc.insert(cntc.end()
,boost::make_move_iterator(&aux_vect[0])
,boost::make_move_iterator(aux_vect + 50));
stdc.insert(stdc.end(), aux_vect2, aux_vect2 + 50);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
for(int i = 0; i < 50; ++i){
IntType move_me (i);
aux_vect[i] = boost::move(move_me);
}
for(int i = 0; i < 50; ++i){
aux_vect2[i] = i;
}
cntc.insert(cntc.begin()+std::ptrdiff_t(cntc.size())
,boost::make_move_iterator(&aux_vect[0])
,boost::make_move_iterator(aux_vect + 50));
stdc.insert(stdc.begin()+std::ptrdiff_t(stdc.size()), aux_vect2, aux_vect2 + 50);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
for(int i = 0, j = static_cast<int>(cntc.size()); i < j; ++i){
cntc.erase(cntc.begin());
stdc.erase(stdc.begin());
}
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
{
IntType aux_vect[50];
for(int i = 0; i < 50; ++i){
IntType move_me(-1);
aux_vect[i] = boost::move(move_me);
}
int aux_vect2[50];
for(int i = 0; i < 50; ++i){
aux_vect2[i] = -1;
}
cntc.insert(cntc.begin()
,boost::make_move_iterator(&aux_vect[0])
,boost::make_move_iterator(aux_vect + 50));
stdc.insert(stdc.begin(), aux_vect2, aux_vect2 + 50);
if(!test::CheckEqualContainers(cntc, stdc)) return false;
}
if(!segtor_copyable_only(cntc, stdc
,dtl::bool_<boost::container::test::is_copyable<IntType>::value>())){
return false;
}
cntc.erase(cntc.begin());
stdc.erase(stdc.begin());
if(!test::CheckEqualContainers(cntc, stdc)) return false;
for(int i = 0; i < max; ++i){
IntType move_me(i);
cntc.insert(cntc.begin(), boost::move(move_me));
stdc.insert(stdc.begin(), i);
}
if(!test::CheckEqualContainers(cntc, stdc)) return false;
//Test insertion from list
{
std::list<int> l(50, int(1));
cntc.insert(cntc.begin(), l.begin(), l.end());
stdc.insert(stdc.begin(), l.begin(), l.end());
if(!test::CheckEqualContainers(cntc, stdc)) return 1;
cntc.assign(l.begin(), l.end());
stdc.assign(l.begin(), l.end());
if(!test::CheckEqualContainers(cntc, stdc)) return 1;
}
cntc.resize(100);
stdc.resize(100);
if(!test::CheckEqualContainers(cntc, stdc)) return 1;
cntc.resize(200);
stdc.resize(200);
if(!test::CheckEqualContainers(cntc, stdc)) return 1;
}
std::cout << std::endl << "Test OK!" << std::endl;
return true;
}
bool test_ctad() //Older clang versions suffer from ICE here
#if !defined(BOOST_CONTAINER_NO_CXX17_CTAD) && (!defined(BOOST_CLANG) || (BOOST_CLANG_VERSION >= 80000))
{
typedef std::vector<int> MyStd;
//Check Constructor Template Auto Deduction
{
MyStd gold = MyStd{ 1, 2, 3 };
segtor<int> test = segtor(gold.begin(), gold.end());
if (!test::CheckEqualContainers(gold, test)) return false;
}
{
MyStd gold = MyStd{ 1, 2, 3 };
segtor<int> test = segtor<int>(gold.begin(), gold.end(), new_allocator<int>());
if (!test::CheckEqualContainers(gold, test)) return false;
}
return true;
}
#else
{ return true; }
#endif
template<class VoidAllocator, bool Reservable>
struct GetAllocatorCont
{
template<class ValueType>
struct apply
{
typedef segtor< ValueType
, typename allocator_traits<VoidAllocator>
::template portable_rebind_alloc<ValueType>::type
, typename segtor_options<reservable<Reservable> >::type
> type;
};
};
template<class VoidAllocator, bool Reservable>
int test_cont_variants()
{
typedef typename GetAllocatorCont<VoidAllocator, Reservable>::template apply<int>::type MyCont;
typedef typename GetAllocatorCont<VoidAllocator, Reservable>::template apply<test::movable_int>::type MyMoveCont;
typedef typename GetAllocatorCont<VoidAllocator, Reservable>::template apply<test::movable_and_copyable_int>::type MyCopyMoveCont;
typedef typename GetAllocatorCont<VoidAllocator, Reservable>::template apply<test::copyable_int>::type MyCopyCont;
typedef typename GetAllocatorCont<VoidAllocator, Reservable>::template apply<test::moveconstruct_int>::type MyMoveConstructCont;
if (test::vector_test<MyCont>())
return 1;
if (test::vector_test<MyMoveCont>())
return 1;
if (test::vector_test<MyCopyMoveCont>())
return 1;
if (test::vector_test<MyCopyCont>())
return 1;
if (test::vector_test<MyMoveConstructCont>())
return 1;
return 0;
}
template<std::size_t N>
struct char_holder
{
char chars[N];
};
bool do_test_default_block_size()
{
//Check power of two sizes by default
BOOST_TEST(segtor<char_holder<8> >::get_block_size() == 16*sizeof(void*));
BOOST_TEST(segtor<char_holder<12> >::get_block_size() == 16*sizeof(void*));
BOOST_TEST(segtor<char_holder<16> >::get_block_size() == 8*sizeof(void*));
BOOST_TEST(segtor<char_holder<20> >::get_block_size() == 8*sizeof(void*));
BOOST_TEST(segtor<char_holder<24> >::get_block_size() == 8*sizeof(void*));
BOOST_TEST(segtor<char_holder<28> >::get_block_size() == 8*sizeof(void*));
BOOST_TEST(segtor<char_holder<32> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<36> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<40> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<44> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<48> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<52> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<56> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<60> >::get_block_size() == 4*sizeof(void*));
BOOST_TEST(segtor<char_holder<64> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<68> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<72> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<76> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<80> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<84> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<88> >::get_block_size() == 2*sizeof(void*));
BOOST_TEST(segtor<char_holder<92> >::get_block_size() == 2*sizeof(void*));
//Minimal 8 elements
BOOST_TEST(segtor<char_holder<148> >::get_block_size() == 8u);
return 0 == boost::report_errors();
}
struct boost_container_segtor;
namespace boost { namespace container { namespace test {
template<>
struct alloc_propagate_base<boost_container_segtor>
{
template <class T, class Allocator>
struct apply
{
typedef boost::container::segtor<T, Allocator> type;
};
};
}}} //namespace boost::container::test
//Test segtor has the expected size --> 3 words
BOOST_CONTAINER_STATIC_ASSERT_MSG(3*sizeof(void*) == sizeof(segtor<int>), "sizeof(segtor<int> should be 3 words");
int main ()
{
if(!do_recursive_segtor_test())
return 1;
if(!do_test<int, false>())
return 1;
if(!do_test<test::movable_int, true>())
return 1;
if(!do_test<test::movable_and_copyable_int, false>())
return 1;
if(!do_test<test::copyable_int, true>())
return 1;
//Default block size
if(!do_test_default_block_size())
return 1;
if (!test_ctad())
return 1;
//Test non-copy-move operations (back only; no emplace_front)
{
segtor<test::non_copymovable_int> d;
d.emplace_back();
d.emplace_back(1);
d.resize(10);
d.resize(1);
}
////////////////////////////////////
// Allocator implementations
////////////////////////////////////
// std:allocator
if(test_cont_variants< std::allocator<void>, false >()){
std::cerr << "test_cont_variants< std::allocator<void> > failed" << std::endl;
return 1;
}
// boost::container::allocator
if(test_cont_variants< allocator<void>, true >()){
std::cerr << "test_cont_variants< allocator<void> > failed" << std::endl;
return 1;
}
////////////////////////////////////
// Default init test
////////////////////////////////////
if(!test::default_init_test< segtor<int, test::default_init_allocator<int> > >()){
std::cerr << "Default init test failed" << std::endl;
return 1;
}
////////////////////////////////////
// Emplace testing
////////////////////////////////////
// segtor does not provide front operations (emplace_front, push_front, pop_front)
const test::EmplaceOptions Options = (test::EmplaceOptions)(test::EMPLACE_BACK | test::EMPLACE_BEFORE);
if(!boost::container::test::test_emplace
< segtor<test::EmplaceInt>, Options>())
return 1;
////////////////////////////////////
// Allocator propagation testing
////////////////////////////////////
if(!boost::container::test::test_propagate_allocator<boost_container_segtor>())
return 1;
////////////////////////////////////
// Initializer lists testing
////////////////////////////////////
if(!boost::container::test::test_vector_methods_with_initializer_list_as_argument_for
< boost::container::segtor<int> >()) {
return 1;
}
////////////////////////////////////
// Iterator testing
////////////////////////////////////
{
typedef boost::container::segtor<int> cont_int;
for(std::size_t i = 1; i <= 10000; i*=10){
cont_int a;
for (int j = 0; j < (int)i; ++j)
a.push_back((int)j);
boost::intrusive::test::test_iterator_random< cont_int >(a);
if(boost::report_errors() != 0) {
return 1;
}
}
}
////////////////////////////////////
// has_trivial_destructor_after_move testing
////////////////////////////////////
// default allocator
{
typedef boost::container::segtor<int> cont;
typedef cont::allocator_type allocator_type;
typedef boost::container::allocator_traits<allocator_type>::pointer pointer;
BOOST_CONTAINER_STATIC_ASSERT_MSG(!(boost::has_trivial_destructor_after_move<cont>::value !=
boost::has_trivial_destructor_after_move<allocator_type>::value &&
boost::has_trivial_destructor_after_move<pointer>::value)
, "has_trivial_destructor_after_move(std::allocator) test failed");
}
// std::allocator
{
typedef boost::container::segtor<int, std::allocator<int> > cont;
typedef cont::allocator_type allocator_type;
typedef boost::container::allocator_traits<allocator_type>::pointer pointer;
BOOST_CONTAINER_STATIC_ASSERT_MSG(!(boost::has_trivial_destructor_after_move<cont>::value !=
boost::has_trivial_destructor_after_move<allocator_type>::value &&
boost::has_trivial_destructor_after_move<pointer>::value)
, "has_trivial_destructor_after_move(std::allocator) test failed");
}
return 0;
}