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 22 #include "test_macros.h" 23 #include "format_tests.h" 24 25 auto test = []<class CharT, class... Args>(std::basic_string<CharT> expected, 26 std::basic_string<CharT> fmt, 27 const Args&... args) { 28 std::basic_string<CharT> out = std::vformat( 29 fmt, std::make_format_args<std::basic_format_context< 30 std::back_insert_iterator<std::basic_string<CharT>>, CharT>>( 31 args...)); 32 assert(out == expected); 33 }; 34 35 auto test_exception = []<class CharT, class... Args>( 36 std::string_view what, std::basic_string<CharT> fmt, const Args&... args) { 37 #ifndef TEST_HAS_NO_EXCEPTIONS 38 try { 39 std::vformat( 40 fmt, std::make_format_args<std::basic_format_context< 41 std::back_insert_iterator<std::basic_string<CharT>>, CharT>>( 42 args...)); 43 assert(false); 44 } catch (std::format_error& e) { 45 LIBCPP_ASSERT(e.what() == what); 46 return; 47 } 48 assert(false); 49 #else 50 (void)what; 51 (void)fmt; 52 (void)sizeof...(args); 53 #endif 54 }; 55 56 int main(int, char**) { 57 format_tests_char_to_wchar_t(test); 58 59 format_tests<char>(test, test_exception); 60 format_tests<wchar_t>(test, test_exception); 61 62 return 0; 63 } 64