1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 10 // UNSUPPORTED: no-threads 11 12 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME 13 14 // <thread> 15 16 // template<class charT> 17 // struct formatter<thread::id, charT>; 18 19 // template<class FormatContext> 20 // typename FormatContext::iterator 21 // format(const T& r, FormatContext& ctx) const; 22 23 // Note this tests the basics of this function. It's tested in more detail in 24 // the format functions test. 25 26 #include <cassert> 27 #include <concepts> 28 #include <iterator> 29 #include <thread> 30 31 #include "test_format_context.h" 32 #include "test_macros.h" 33 #include "make_string.h" 34 35 #define SV(S) MAKE_STRING_VIEW(CharT, S) 36 37 template <class StringViewT> 38 void test_format(StringViewT expected, std::thread::id arg) { 39 using CharT = typename StringViewT::value_type; 40 using String = std::basic_string<CharT>; 41 using OutIt = std::back_insert_iterator<String>; 42 using FormatCtxT = std::basic_format_context<OutIt, CharT>; 43 44 const std::formatter<std::thread::id, CharT> formatter; 45 46 String result; 47 OutIt out = std::back_inserter(result); 48 FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg)); 49 formatter.format(arg, format_ctx); 50 assert(result == expected); 51 } 52 53 template <class CharT> 54 void test_fmt() { 55 #if !defined(__APPLE__) && !defined(__FreeBSD__) 56 test_format(SV("0"), std::thread::id()); 57 #else 58 test_format(SV("0x0"), std::thread::id()); 59 #endif 60 } 61 62 void test() { 63 test_fmt<char>(); 64 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 65 test_fmt<wchar_t>(); 66 #endif 67 } 68 69 int main(int, char**) { 70 test(); 71 72 return 0; 73 } 74