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

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libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/parse.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 ParseContext>
				// constexpr typename ParseContext::iterator
				// parse(ParseContext& ctx);

				// 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>
				constexpr void test_parse(StringViewT fmt) {
				using CharT = typename StringViewT::value_type;
				auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
				std::formatter<std::thread::id, CharT> formatter;
				static_assert(std::semiregular<decltype(formatter)>);

				std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
				assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
				}

				template <class CharT>
				constexpr void test_fmt() {
				test_parse(SV(""));
				ldionneUnsubmitted Not Done Reply Inline Actions This seems a bit clever to me. Can we pass the expected end position as a parameter to the function explicitly? So this would look like `it == fmt.begin() + offset`. If you have this pattern in other places, I'm OK to land the patch as-is but we could have a simple patch to change all of them. ldionne: This seems a bit clever to me. Can we pass the expected end position as a parameter to the…
				MordanteAuthorUnsubmitted Done Reply Inline Actions See D147885 Mordante: See D147885
				test_parse(SV("1"));

				test_parse(SV("}"));
				test_parse(SV("1}"));
				}

				constexpr bool test() {
				test_fmt<char>();
				#ifndef TEST_HAS_NO_WIDE_CHARACTERS
				test_fmt<wchar_t>();
				#endif

				return true;
				}

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

				return 0;
				}