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