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test.cpp
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test.cpp
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#include <memory>
#include <atomic>
#include <system_error>
#include <iostream>
#include <random>
#include <type_traits>
#include <cstdint>
#include <string>
//#include "include/error.hpp"
//#include "error.cpp"
#include "all_in_one.hpp"
#ifdef NDEBUG
#error "Cannot compile test with NDEBUG"
#endif
struct counting_allocator_base
{
static std::atomic<std::size_t> instance_count;
};
std::atomic<std::size_t> counting_allocator_base::instance_count(0);
template <class T>
struct counting_allocator : counting_allocator_base
{
using value_type = T;
constexpr counting_allocator() noexcept = default;
template <class U>
constexpr counting_allocator(const counting_allocator<U>) noexcept
{ }
T* allocate(std::size_t n)
{
counting_allocator_base::instance_count.fetch_add(n * sizeof(T), std::memory_order_release);
return static_cast<T*>(::operator new(n * sizeof(T)));
}
void deallocate(T* v, std::size_t n) noexcept
{
counting_allocator_base::instance_count.fetch_sub(n * sizeof(T), std::memory_order_release);
::operator delete(static_cast<void*>(v));
}
};
template <class T>
constexpr bool operator == (const counting_allocator<T>& lhs, const counting_allocator<T>& rhs) noexcept
{
return true;
}
template <class T>
constexpr bool operator != (const counting_allocator<T>& lhs, const counting_allocator<T>& rhs) noexcept
{
return !(lhs == rhs);
}
namespace MyStuff {
struct MyError { };
stdx::error make_error(MyError e) noexcept
{
return std::errc::invalid_argument;
}
} // end namespace MyStuff
struct ErrorData : stdx::enable_reference_count
{
ErrorData() noexcept : code{}
{ }
ErrorData(const std::string& s, std::uint64_t c) : message(s), code(c)
{ }
std::string message;
std::uint64_t code;
};
bool operator == (const ErrorData& lhs, const ErrorData& rhs) noexcept
{
return (lhs.message == rhs.message) && (lhs.code == rhs.code);
}
bool operator != (const ErrorData& lhs, const ErrorData& rhs) noexcept
{
return !(lhs == rhs);
}
struct random_device_initializer
{
static std::size_t seed()
{
static std::random_device rd;
return rd();
}
};
std::string random_string(const std::size_t max_string_size = 128)
{
constexpr char letters[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
static std::mt19937_64 rng(random_device_initializer::seed());
const std::size_t str_size = std::max<std::size_t>(
1,
rng() % std::max<std::size_t>(1, max_string_size)
);
std::string result;
result.reserve(str_size);
for (std::size_t i = 0; i != str_size; ++i)
result.push_back(letters[rng() % (sizeof(letters) - 1)]);
return result;
}
std::uint64_t random_integer()
{
static std::mt19937_64 rng(random_device_initializer::seed());
return rng();
}
stdx::intrusive_ptr<ErrorData> random_error_data()
{
return stdx::intrusive_ptr<ErrorData>{
new ErrorData{random_string(), random_integer()}
};
}
static_assert(
stdx::is_trivially_relocatable<stdx::intrusive_ptr<ErrorData>>::value,
"FAILz"
);
struct MyErrorDomain : stdx::error_domain
{
using value_type = stdx::intrusive_ptr<ErrorData>;
constexpr MyErrorDomain() noexcept
:
stdx::error_domain{
{0x4725020cb3ca41e5ULL, 0xa335dafe21e65f8cULL},
stdx::default_error_resource_management_t<value_type>{}
}
{ }
virtual stdx::string_ref name() const noexcept override
{
return "MyErrorDomain";
}
bool equivalent(const stdx::error& lhs, const stdx::error& rhs) const noexcept override
{
assert(lhs.domain() == *this);
if (lhs.domain() == rhs.domain())
{
return stdx::error_cast<value_type>(lhs)->code == stdx::error_cast<value_type>(rhs)->code;
}
return false;
}
stdx::string_ref message(const stdx::error& e) const noexcept override
{
value_type edata = stdx::error_cast<value_type>(e);
return stdx::string_ref{edata->message.data(), edata->message.data() + edata->message.size()};
}
};
constexpr MyErrorDomain my_error_domain {};
// custom std::error_category to test interoperation with std::error_code
//
namespace MyLib {
enum class errc
{
ragtime_error,
invalid_jazz,
missing_pants
};
struct MyErrorCategory : std::error_category
{
const char* name() const noexcept override
{
return "MyErrorCategory";
}
std::string message(int code) const override
{
switch (static_cast<errc>(code))
{
case errc::ragtime_error: return "Ragtime error";
case errc::invalid_jazz: return "Invalid jazz";
case errc::missing_pants: return "Missing pants";
default:;
return "Unknown error";
}
}
};
MyErrorCategory my_error_category_instance;
std::error_code make_error_code(errc e)
{
return std::error_code(static_cast<int>(e), my_error_category_instance);
}
stdx::error make_error(errc e)
{
return make_error_code(e);
}
} // end namespace MyLib
namespace std {
template <>
struct is_error_code_enum<MyLib::errc> : std::true_type
{ };
} // end namespace std
void string_ref_test()
{
{
stdx::string_ref s{"abc"};
assert(s == "abc");
assert(s.size() == 3);
assert(!s.empty());
assert(s < "abcd");
assert(s < "abd");
assert(s > "abb");
assert(s > "ab");
assert(s < "ad");
assert(s < "b");
static_assert(std::is_standard_layout<stdx::string_ref>::value, "FAILZ");
static_assert(std::is_standard_layout<stdx::shared_string_ref>::value, "FAILZ");
}
{
stdx::shared_string_ref s = "xyz";
assert(s == "xyz");
assert(s.use_count() == 1);
{
stdx::shared_string_ref s2 = s;
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s2 == "xyz");
stdx::shared_string_ref s3 = s;
assert(s.use_count() == 3);
assert(s2.use_count() == 3);
assert(s3.use_count() == 3);
assert(s3 == "xyz");
}
assert(s.use_count() == 1);
}
{
stdx::shared_string_ref s = "bEEf";
assert(s == "bEEf");
assert(s.use_count() == 1);
{
stdx::shared_string_ref s1 = s;
assert(s.use_count() == 2);
assert(s1.use_count() == 2);
assert(s1 == "bEEf");
stdx::shared_string_ref s2 = s;
assert(s.use_count() == 3);
assert(s2.use_count() == 3);
assert(s2 == "bEEf");
stdx::shared_string_ref s3 = std::move(s1);
assert(s1.use_count() == 0);
assert(s1.empty());
assert(s1 == stdx::string_ref{});
assert(s1 == "");
assert(s2.use_count() == 3);
assert(s3.use_count() == 3);
assert(s3 == "bEEf");
assert(s3 == s2);
assert(s3 == s);
assert(s3 != s1);
assert(!s3.empty());
assert(s3.size() == 4);
}
assert(s.use_count() == 1);
}
{
stdx::shared_string_ref s = "ccc";
assert(s == "ccc");
assert(s.use_count() == 1);
{
stdx::shared_string_ref s2 = s;
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s2 == "ccc");
stdx::shared_string_ref s3 = "xxx";
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s3.use_count() == 1);
assert(s3 == "xxx");
s3 = s2;
assert(s3 == s2);
assert(s3.use_count() == 3);
assert(s2.use_count() == 3);
assert(s3.data() == s2.data());
assert(s3 == "ccc");
stdx::shared_string_ref s4 = "qqq";
assert(s4 == "qqq");
assert(s4.use_count() == 1);
s4 = std::move(s3);
assert(s4.use_count() == 3);
assert(s4 == "ccc");
assert(s4.data() == s2.data());
assert(s4 == s2);
assert(s3.empty());
assert(s3 == stdx::string_ref{});
assert(s4 != s3);
}
assert(s.use_count() == 1);
}
{
stdx::shared_string_ref s{std::allocator<void>{}, "xyz"};
assert(s == "xyz");
assert(s.use_count() == 1);
{
stdx::shared_string_ref s2 = s;
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s2 == "xyz");
stdx::shared_string_ref s3 = s;
assert(s.use_count() == 3);
assert(s2.use_count() == 3);
assert(s3.use_count() == 3);
assert(s3 == "xyz");
}
assert(s.use_count() == 1);
}
{
stdx::shared_string_ref s{counting_allocator<int>{}, "DFF"};
assert(s == "DFF");
assert(s.use_count() == 1);
assert(counting_allocator_base::instance_count.load() != 0);
{
stdx::shared_string_ref s2 = s;
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s2 == "DFF");
assert(s2 == s);
assert(*std::begin(s2) == 'D');
assert(*std::prev(std::end(s2)) == 'F');
stdx::shared_string_ref s3 = "ZZZ";
assert(s.use_count() == 2);
assert(s2.use_count() == 2);
assert(s3.use_count() == 1);
assert(s3 == "ZZZ");
assert(*std::begin(s3) == 'Z');
s3 = s2;
assert(s3 == s2);
assert(s3.use_count() == 3);
assert(s2.use_count() == 3);
assert(s3.data() == s2.data());
assert(s3 == "DFF");
stdx::shared_string_ref s4 = "QQQX";
assert(s4 == "QQQX");
assert(s4.use_count() == 1);
s4 = std::move(s3);
assert(s4.use_count() == 3);
assert(s4 == "DFF");
assert(s4.data() == s2.data());
assert(s4 == s2);
assert(s3.empty());
assert(s3 == stdx::string_ref{});
assert(s4 != s3);
}
assert(s.use_count() == 1);
}
assert(counting_allocator_base::instance_count.load() == 0);
std::cout << "string_ref_test: PASSED!" << std::endl;
}
void error_test()
{
static_assert(sizeof(stdx::error) == sizeof(void*) * 2, "FAILz");
static_assert(std::is_standard_layout<stdx::error>::value, "FAILz");
#if defined(__cpp_lib_trivially_relocatable)
static_assert(std::is_trivially_relocatable<stdx::error>::value, "FAILz");
#endif
// error constructed from std::errc
{
stdx::error e = std::errc::bad_file_descriptor;
assert(e.domain() == stdx::generic_domain);
assert(e.domain().name() == "generic domain");
assert(e == std::errc::bad_file_descriptor);
assert(e.message() == "Bad file descriptor");
stdx::error e2 = MyStuff::MyError{};
assert(e.domain() == stdx::generic_domain);
stdx::error e3 = e;
assert(e3.domain() == stdx::generic_domain);
assert(e3.domain().name() == "generic domain");
assert(e3 == std::errc::bad_file_descriptor);
assert(e3 == e);
assert(e == e3);
assert(e3 != e2);
assert(e3.message() == "Bad file descriptor");
}
// error constructed from custom error_domain and error value type
{
using shared_pointer = MyErrorDomain::value_type;
shared_pointer p = random_error_data();
assert(p.use_count() == 1);
{
stdx::error e{p, my_error_domain};
assert(p.use_count() == 2);
assert(e.domain() == my_error_domain);
}
assert(p.use_count() == 1);
{
stdx::error e1{p, my_error_domain};
assert(p.use_count() == 2);
assert(e1.message() == p->message.data());
stdx::error e2 = e1;
assert(e2.domain() == my_error_domain);
assert(p.use_count() == 3);
stdx::error e3 = e2;
assert(e3.domain() == my_error_domain);
assert(p.use_count() == 4);
}
assert(p.use_count() == 1);
{
stdx::error e1{p, my_error_domain};
assert(p.use_count() == 2);
stdx::error e2 = e1;
assert(e2.domain() == my_error_domain);
assert(p.use_count() == 3);
stdx::error e3 = std::move(e2);
assert(e3.domain() == my_error_domain);
assert(p.use_count() == 3);
stdx::error e4 = std::move(e3);
assert(e4.domain() == my_error_domain);
assert(p.use_count() == 3);
stdx::error e5 = std::move(e2);
assert(e5.domain() == my_error_domain);
assert(p.use_count() == 3);
}
assert(p.use_count() == 1);
{
stdx::error e1{p, my_error_domain};
assert(p.use_count() == 2);
stdx::error e2 = e1;
assert(p.use_count() == 3);
stdx::error e3 = std::move(e2);
assert(p.use_count() == 3);
stdx::error e4 = std::move(e3);
assert(p.use_count() == 3);
e2 = std::errc::invalid_argument;
assert(e2.domain() == stdx::generic_domain);
assert(e2 == std::errc::invalid_argument);
assert(p.use_count() == 3);
e4 = std::errc::invalid_argument;
assert(e4.domain() == stdx::generic_domain);
assert(e4 == std::errc::invalid_argument);
assert(e4 == e2);
assert(p.use_count() == 2);
}
{
stdx::error e1{p, my_error_domain};
assert(p.use_count() == 2);
stdx::error e2 = e1;
assert(p.use_count() == 3);
stdx::error e3 = std::move(e2);
assert(p.use_count() == 3);
stdx::error e4 = std::move(e3);
assert(p.use_count() == 3);
e2 = std::errc::invalid_argument;
assert(e2.domain() == stdx::generic_domain);
assert(e2 == std::errc::invalid_argument);
assert(p.use_count() == 3);
e2 = stdx::error{p, my_error_domain};
assert(e2.domain() == my_error_domain);
assert(e2 != std::errc::invalid_argument);
assert(p.use_count() == 4);
e3 = e2;
assert(p.use_count() == 5);
e3 = e1;
assert(p.use_count() == 5);
e3 = e3;
assert(p.use_count() == 5);
e3 = std::move(e3);
assert(p.use_count() == 5);
e3 = std::move(e1);
assert(p.use_count() == 4);
}
assert(p.use_count() == 1);
}
// error constructed from std::error_code
{
stdx::error e = std::make_error_code(std::errc::file_too_large);
assert(e.domain() == stdx::generic_domain);
assert(e == std::errc::file_too_large);
assert(e == std::make_error_code(std::errc::file_too_large));
e = std::errc::invalid_argument;
assert(e.domain() == stdx::generic_domain);
assert(e == std::errc::invalid_argument);
assert(e == std::make_error_code(std::errc::invalid_argument));
}
// error constructed from std::error_code using custom error category
{
stdx::error e = MyLib::make_error_code(MyLib::errc::missing_pants);
assert(e.domain() == stdx::error_code_domain);
assert(e == MyLib::make_error_code(MyLib::errc::missing_pants));
assert(e == MyLib::errc::missing_pants);
assert(e != MyLib::make_error_code(MyLib::errc::invalid_jazz));
assert(e != std::errc::invalid_argument);
assert(e != MyLib::errc::ragtime_error);
assert(e.message() == "Missing pants");
stdx::error e2 = e;
assert(e2 == e);
assert(e2.domain() == stdx::error_code_domain);
assert(e2 == MyLib::make_error_code(MyLib::errc::missing_pants));
assert(e2 == MyLib::errc::missing_pants);
assert(e2.message() == "Missing pants");
stdx::error e3 = std::move(e2);
assert(e3 == e);
assert(e3.domain() == stdx::error_code_domain);
assert(e3 == MyLib::make_error_code(MyLib::errc::missing_pants));
assert(e3 == MyLib::errc::missing_pants);
assert(e3.message() == "Missing pants");
assert(e2.domain() == stdx::error_code_domain);
assert(e2 != e3);
assert(e2 != MyLib::make_error_code(MyLib::errc::missing_pants));
e2 = e3;
assert(e2 == e);
assert(e2.domain() == stdx::error_code_domain);
assert(e2 == MyLib::make_error_code(MyLib::errc::missing_pants));
assert(e2 == MyLib::errc::missing_pants);
assert(e2.message() == "Missing pants");
e2 = MyLib::errc::invalid_jazz;
assert(e2.domain() == stdx::error_code_domain);
assert(e2 == MyLib::make_error_code(MyLib::errc::invalid_jazz));
assert(e2 == MyLib::errc::invalid_jazz);
assert(e2.message() == "Invalid jazz");
e2 = MyLib::errc::ragtime_error;
assert(e2.domain() == stdx::error_code_domain);
assert(e2 == MyLib::make_error_code(MyLib::errc::ragtime_error));
assert(e2 == MyLib::errc::ragtime_error);
assert(e2.message() == "Ragtime error");
e2 = std::make_error_code(std::errc::file_too_large);
assert(e2.domain() == stdx::generic_domain);
assert(e2 == std::errc::file_too_large);
assert(e2 == std::make_error_code(std::errc::file_too_large));
}
// error constructed from std::exception_ptr
{
std::exception_ptr eptr = std::make_exception_ptr(std::logic_error{"Invalid pants selection"});
stdx::error e = eptr;
assert(e.domain() == stdx::dynamic_exception_domain);
assert(e.message() == "Invalid pants selection");
try { e.throw_exception(); }
catch (const std::logic_error& ex)
{
assert(stdx::string_ref{ex.what()} == "Invalid pants selection");
}
stdx::error e2 = e;
try { e2.throw_exception(); }
catch (const std::logic_error& ex)
{
assert(stdx::string_ref{ex.what()} == "Invalid pants selection");
}
assert(e2 == stdx::dynamic_exception_errc::logic_error);
e2 = std::make_exception_ptr(std::invalid_argument{"Erroneous reticulum"});
try { e2.throw_exception(); }
catch (const std::invalid_argument& ex)
{
assert(stdx::string_ref{ex.what()} == "Erroneous reticulum");
}
assert(e2 == stdx::dynamic_exception_errc::invalid_argument);
assert(e2 == std::errc::invalid_argument);
assert(e2 != stdx::dynamic_exception_errc::domain_error);
assert(e2 != std::errc::bad_file_descriptor);
assert(stdx::dynamic_exception_errc::invalid_argument == e2);
assert(std::errc::invalid_argument == e2);
e2 = std::make_exception_ptr(
std::system_error{std::make_error_code(std::errc::bad_file_descriptor)}
);
try { e2.throw_exception(); }
catch (const std::system_error& ex)
{
assert(ex.code() == std::errc::bad_file_descriptor);
assert(stdx::error{std::errc::bad_file_descriptor} == ex.code());
}
assert(e2 == std::errc::bad_file_descriptor);
assert(std::errc::bad_file_descriptor == e2);
assert(e2.message() == std::make_error_code(std::errc::bad_file_descriptor).message().c_str());
}
std::cout << "stdx::error test: PASSED!" << std::endl;
}
int main()
{
string_ref_test();
error_test();
}