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 // TODO FMT Investigate AppleClang ICE 13 // UNSUPPORTED: apple-clang-13 14 15 // <format> 16 17 // string vformat(string_view fmt, format_args args); 18 // wstring vformat(wstring_view fmt, wformat_args args); 19 20 #include <format> 21 #include <cassert> 22 #include <vector> 23 24 #include "test_macros.h" 25 #include "format_tests.h" 26 #include "string_literal.h" 27 auto test = []<class CharT, class... Args>( 28 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { 29 std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)); 30 assert(out == expected); 31 }; 32 33 auto test_exception = 34 []<class CharT, class... Args>( 35 [[maybe_unused]] std::string_view what, 36 [[maybe_unused]] std::basic_string_view<CharT> fmt, 37 [[maybe_unused]] Args&&... args) { 38 #ifndef TEST_HAS_NO_EXCEPTIONS 39 try { 40 TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)); 41 assert(false); 42 } catch ([[maybe_unused]] const std::format_error& e) { 43 LIBCPP_ASSERT(e.what() == what); 44 return; 45 } 46 assert(false); 47 #endif 48 }; 49 50 int main(int, char**) { 51 format_tests<char>(test, test_exception); 52 53 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 54 format_tests_char_to_wchar_t(test); 55 format_tests<wchar_t>(test, test_exception); 56 #endif 57 58 return 0; 59 } 60