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Differential D144331 Diff 511892 libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/format.pass.cpp

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libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/format.pass.cpp

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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: c++03, c++11, c++14, c++17, c++20
				// UNSUPPORTED: no-threads
				// UNSUPPORTED: libcpp-has-no-incomplete-format

				// TODO FMT Fix this test using GCC, it currently times out.
				// UNSUPPORTED: gcc-12

				// <thread>

				// template<class charT>
				// struct formatter<thread::id, charT>;

				// template<class FormatContext>
				// typename FormatContext::iterator
				// format(const T& r, FormatContext& ctx) const;

				// Note this tests the basics of this function. It's tested in more detail in
				// the format functions test.

				#include <cassert>
				#include <concepts>
				#include <thread>

				#include "test_format_context.h"
				#include "test_macros.h"
				#include "make_string.h"

				#define SV(S) MAKE_STRING_VIEW(CharT, S)

				template <class StringViewT>
				void test_format(StringViewT expected, std::thread::id arg) {
				using CharT = typename StringViewT::value_type;
				using String = std::basic_string<CharT>;
				using OutIt = std::back_insert_iterator<String>;
				using FormatCtxT = std::basic_format_context<OutIt, CharT>;

				const std::formatter<std::thread::id, CharT> formatter;

				String result;
				OutIt out = std::back_inserter(result);
				FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
				formatter.format(arg, format_ctx);
				assert(result == expected);
				}

				template <class CharT>
				void test_fmt() {
				#if !defined(__APPLE__) && !defined(__FreeBSD__)
				test_format(SV("0"), std::thread::id());
				#else
				test_format(SV("0x0"), std::thread::id());
				#endif
				}

				void test() {
				test_fmt<char>();
				#ifndef TEST_HAS_NO_WIDE_CHARACTERS
				test_fmt<wchar_t>();
				#endif
				}

				int main(int, char**) {
				test();

				return 0;
				}