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 9 // UNSUPPORTED: libcpp-no-concepts 10 // UNSUPPORTED: libcpp-has-no-incomplete-format 11 // TODO FMT Evaluate gcc-11 status 12 // UNSUPPORTED: gcc-11 13 14 // <format> 15 16 // string vformat(string_view fmt, format_args args); 17 // wstring vformat(wstring_view fmt, wformat_args args); 18 19 #include <format> 20 #include <cassert> 21 #include <vector> 22 23 #include "test_macros.h" 24 #include "format_tests.h" 25 26 auto test = []<class CharT, class... Args>(std::basic_string<CharT> expected, 27 std::basic_string<CharT> fmt, 28 const Args&... args) { 29 std::basic_string<CharT> out = std::vformat( 30 fmt, std::make_format_args<std::basic_format_context< 31 std::back_insert_iterator<std::basic_string<CharT>>, CharT>>( 32 args...)); 33 assert(out == expected); 34 }; 35 36 auto test_exception = []<class CharT, class... Args>( 37 std::string_view what, std::basic_string<CharT> fmt, const Args&... args) { 38 #ifndef TEST_HAS_NO_EXCEPTIONS 39 try { 40 std::vformat( 41 fmt, std::make_format_args<std::basic_format_context< 42 std::back_insert_iterator<std::basic_string<CharT>>, CharT>>( 43 args...)); 44 assert(false); 45 } catch (std::format_error& e) { 46 LIBCPP_ASSERT(e.what() == what); 47 return; 48 } 49 assert(false); 50 #else 51 (void)what; 52 (void)fmt; 53 (void)sizeof...(args); 54 #endif 55 }; 56 57 int main(int, char**) { 58 format_tests<char>(test, test_exception); 59 60 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 61 format_tests_char_to_wchar_t(test); 62 format_tests<wchar_t>(test, test_exception); 63 #endif 64 65 return 0; 66 } 67