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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: no-threads
// UNSUPPORTED: no-localization
// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
// REQUIRES: locale.fr_FR.UTF-8
// TODO FMT This test should not require std::to_chars(floating-point)
// XFAIL: availability-fp_to_chars-missing
// <thread>
// class thread::id
// template<class charT, class traits>
// basic_ostream<charT, traits>&
// operator<<(basic_ostream<charT, traits>& out, thread::id id);
#include <cassert>
#include <format>
#include <locale>
#include <sstream>
#include <thread>
#include "make_string.h"
#include "platform_support.h" // locale name macros
#include "test_macros.h"
template <class CharT>
static void basic() {
std::thread::id id0 = std::this_thread::get_id();
std::basic_ostringstream<CharT> os;
os << id0;
#if TEST_STD_VER > 20
// C++23 added a formatter specialization for thread::id.
// This changed the requirement of ostream to have a
// [thread.thread.id]/2
// The text representation for the character type charT of an object of
// type thread::id is an unspecified sequence of charT ...
// This definition is used for both streaming and formatting.
//
// Test whether the output is identical.
std::basic_string<CharT> s = std::format(MAKE_STRING_VIEW(CharT, "{}"), id0);
assert(s == os.str());
#endif
}
template <class CharT>
static std::basic_string<CharT> format(std::ios_base::fmtflags flags) {
std::basic_stringstream<CharT> sstr;
sstr.flags(flags);
sstr << std::this_thread::get_id();
return sstr.str();
}
template <class CharT>
static void stream_state() {
std::basic_stringstream<CharT> sstr;
sstr << std::this_thread::get_id();
std::basic_string<CharT> expected = sstr.str();
// Unaffected by fill, width, and align.
assert(expected == format<CharT>(std::ios_base::dec | std::ios_base::skipws)); // default flags
assert(expected == format<CharT>(std::ios_base::oct));
assert(expected == format<CharT>(std::ios_base::hex));
assert(expected == format<CharT>(std::ios_base::scientific));
assert(expected == format<CharT>(std::ios_base::fixed));
assert(expected == format<CharT>(std::ios_base::boolalpha));
assert(expected == format<CharT>(std::ios_base::showbase));
assert(expected == format<CharT>(std::ios_base::showpoint));
assert(expected == format<CharT>(std::ios_base::showpos));
assert(expected == format<CharT>(std::ios_base::skipws)); // added for completeness
assert(expected == format<CharT>(std::ios_base::unitbuf)); // added for completeness
assert(expected == format<CharT>(std::ios_base::uppercase));
// Test fill, width, and align.
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('#'));
sstr.width(expected.size() + 10); // Make sure fill and align affect the output.
sstr.flags(std::ios_base::dec | std::ios_base::skipws | std::ios_base::right);
sstr << std::this_thread::get_id();
expected = sstr.str();
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('*'));
sstr.width(expected.size());
sstr.flags(std::ios_base::dec | std::ios_base::skipws | std::ios_base::right);
sstr << std::this_thread::get_id();
assert(expected != sstr.str());
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('#'));
sstr.width(expected.size() - 1);
sstr.flags(std::ios_base::dec | std::ios_base::skipws | std::ios_base::right);
sstr << std::this_thread::get_id();
assert(expected != sstr.str());
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('#'));
sstr.width(expected.size());
sstr.flags(std::ios_base::dec | std::ios_base::skipws | std::ios_base::left);
sstr << std::this_thread::get_id();
assert(expected != sstr.str());
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('#'));
sstr.width(expected.size());
sstr.flags(std::ios_base::dec | std::ios_base::skipws | std::ios_base::internal);
sstr << std::this_thread::get_id();
assert(expected == sstr.str()); // internal does *not* affect strings
// Test the locale's numpunct.
std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
sstr.str(std::basic_string<CharT>());
sstr.fill(CharT('#'));
sstr.width(expected.size());
sstr << std::this_thread::get_id();
assert(expected == sstr.str());
}
template <class CharT>
static void test() {
basic<CharT>();
stream_state<CharT>();
}
int main(int, char**) {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
return 0;
}
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