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#if ISPTR_USE_MODULES
import isptr;
#else
#include <intrusive_shared_ptr/ref_counted.h>
#include <intrusive_shared_ptr/refcnt_ptr.h>
#endif
#include <doctest/doctest.h>
#include <vector>
#include <stdexcept>
using namespace isptr;
namespace
{
struct minimal_counted : ref_counted<minimal_counted, ref_counted_flags::none, char>
{
friend ref_counted;
private:
~minimal_counted() noexcept
{}
};
static_assert( !std::is_default_constructible_v<ref_counted<minimal_counted>> );
static_assert( !std::is_copy_constructible_v<ref_counted<minimal_counted>> );
static_assert( !std::is_move_constructible_v<ref_counted<minimal_counted>> );
static_assert( !std::is_copy_assignable_v<ref_counted<minimal_counted>> );
static_assert( !std::is_move_assignable_v<ref_counted<minimal_counted>> );
static_assert( !std::is_swappable_v<ref_counted<minimal_counted>> );
static_assert( !std::is_destructible_v<ref_counted<minimal_counted>> );
static_assert( sizeof(minimal_counted) == sizeof(char) );
static_assert( !std::is_default_constructible_v<minimal_counted> );
static_assert( !std::is_copy_constructible_v<minimal_counted> );
static_assert( !std::is_move_constructible_v<minimal_counted> );
static_assert( !std::is_copy_assignable_v<minimal_counted> );
static_assert( !std::is_move_assignable_v<minimal_counted> );
static_assert( !std::is_swappable_v<minimal_counted> );
static_assert( !std::is_destructible_v<minimal_counted> );
struct adapded { char c; };
using minimal_adapded_counted = ref_counted_adapter<adapded, ref_counted_flags::none, char>;
static_assert( sizeof(minimal_adapded_counted) == 2 * sizeof(char) );
static_assert( !std::is_default_constructible_v<minimal_adapded_counted> );
static_assert( !std::is_copy_constructible_v<minimal_adapded_counted> );
static_assert( !std::is_move_constructible_v<minimal_adapded_counted> );
static_assert( !std::is_copy_assignable_v<minimal_adapded_counted> );
static_assert( !std::is_move_assignable_v<minimal_adapded_counted> );
static_assert( !std::is_destructible_v<minimal_adapded_counted> );
using minimal_wrapped_counted = ref_counted_wrapper<char, ref_counted_flags::none, char>;
static_assert( sizeof(minimal_wrapped_counted) == 2 * sizeof(char) );
static_assert( !std::is_default_constructible_v<minimal_wrapped_counted> );
static_assert( !std::is_copy_constructible_v<minimal_wrapped_counted> );
static_assert( !std::is_move_constructible_v<minimal_wrapped_counted> );
static_assert( !std::is_copy_assignable_v<minimal_wrapped_counted> );
static_assert( !std::is_move_assignable_v<minimal_wrapped_counted> );
static_assert( !std::is_destructible_v<minimal_wrapped_counted> );
struct simple_counted : ref_counted<simple_counted>
{
friend ref_counted;
static inline int instance_count = 0;
simple_counted() noexcept
{ ++instance_count; }
simple_counted(int)
{ throw std::runtime_error("x"); }
private:
~simple_counted() noexcept
{ --instance_count; }
};
static_assert( !std::is_default_constructible_v<simple_counted> );
static_assert( !std::is_copy_constructible_v<simple_counted> );
static_assert( !std::is_move_constructible_v<simple_counted> );
static_assert( !std::is_copy_assignable_v<simple_counted> );
static_assert( !std::is_move_assignable_v<simple_counted> );
static_assert( !std::is_destructible_v<simple_counted> );
}
TEST_SUITE("ref_counted") {
TEST_CASE( "Minimal ref counted works" ) {
SUBCASE("derived") {
auto p1 = refcnt_attach(new minimal_counted());
CHECK(p1);
auto p2 = p1;
CHECK(p2 == p1);
}
SUBCASE("adapted") {
auto p1 = refcnt_attach(new minimal_adapded_counted(adapded{'a'}));
CHECK(p1);
CHECK(p1->c == 'a');
auto p2 = p1;
CHECK(p2 == p1);
}
SUBCASE("wrapped") {
auto p1 = refcnt_attach(new minimal_wrapped_counted('a'));
CHECK(p1);
CHECK(p1->wrapped == 'a');
auto p2 = p1;
CHECK(p2 == p1);
}
}
TEST_CASE( "Simple ref counted works" ) {
auto p1 = refcnt_attach(new simple_counted());
CHECK(simple_counted::instance_count == 1);
auto p2 = p1;
CHECK(simple_counted::instance_count == 1);
p1.reset();
CHECK(simple_counted::instance_count == 1);
p2.reset();
CHECK(simple_counted::instance_count == 0);
}
TEST_CASE( "Ref counted with ctor exception" ) {
try
{
auto p1 = refcnt_attach(new simple_counted(2));
}
catch(std::exception &)
{
CHECK(simple_counted::instance_count == 0);
}
}
TEST_CASE( "Custom destroy" ) {
struct custom_destroy : ref_counted<custom_destroy>
{
friend ref_counted;
custom_destroy(bool * d): destroyed(d) {}
bool * destroyed;
private:
void destroy() const noexcept
{
*destroyed = true;
free((void*)this);
}
};
bool destroyed = false;
auto p1 = refcnt_attach(new (malloc(sizeof(custom_destroy))) custom_destroy{&destroyed});
p1.reset();
CHECK(destroyed);
}
TEST_CASE( "Ref counted wrapper" ) {
SUBCASE("adapter") {
auto p1 = refcnt_attach(new ref_counted_adapter<std::vector<char>>(5));
CHECK( p1->size() == 5 );
}
SUBCASE("wrapper") {
auto p1 = refcnt_attach(new ref_counted_wrapper<std::vector<char>>(5));
CHECK( p1->wrapped.size() == 5 );
}
}
}
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