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