1 //===----------------------------------------------------------------------===// 2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 3 // See https://llvm.org/LICENSE.txt for license information. 4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 5 // 6 //===----------------------------------------------------------------------===// 7 8 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 9 // UNSUPPORTED: libcpp-has-no-incomplete-format 10 11 // This test requires the dylib support introduced in D92214. 12 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}} 13 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}} 14 15 // <format> 16 17 // template<class charT, formattable<charT>... Ts> 18 // struct formatter<pair-or-tuple<Ts...>, charT> 19 20 // template<class FormatContext> 21 // typename FormatContext::iterator 22 // format(see below& elems, FormatContext& ctx) const; 23 24 // Note this tests the basics of this function. It's tested in more detail in 25 // the format functions tests. 26 27 #include <cassert> 28 #include <concepts> 29 #include <format> 30 #include <tuple> 31 #include <utility> 32 33 #include "test_format_context.h" 34 #include "test_macros.h" 35 #include "make_string.h" 36 37 #define SV(S) MAKE_STRING_VIEW(CharT, S) 38 39 template <class StringViewT, class Arg> 40 void test(StringViewT expected, Arg arg) { 41 using CharT = typename StringViewT::value_type; 42 using String = std::basic_string<CharT>; 43 using OutIt = std::back_insert_iterator<String>; 44 using FormatCtxT = std::basic_format_context<OutIt, CharT>; 45 46 const std::formatter<Arg, CharT> formatter; 47 48 String result; 49 OutIt out = std::back_inserter(result); 50 FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg)); 51 formatter.format(arg, format_ctx); 52 assert(result == expected); 53 } 54 55 template <class CharT> 56 void test() { 57 test(SV("(1)"), std::tuple<int>{1}); 58 test(SV("(1, 1)"), std::tuple<int, CharT>{1, CharT('1')}); 59 test(SV("(1, 1)"), std::pair<int, CharT>{1, CharT('1')}); 60 test(SV("(1, 1, 1)"), std::tuple<int, CharT, double>{1, CharT('1'), 1.0}); 61 } 62 63 void test() { 64 test<char>(); 65 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 66 test<wchar_t>(); 67 #endif 68 } 69 70 int main(int, char**) { 71 test(); 72 73 return 0; 74 } 75