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 // TODO FMT Evaluate gcc-12 status 10 // UNSUPPORTED: gcc-12 11 12 // XFAIL: availability-fp_to_chars-missing 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 #include "string_literal.h" 26 #include "assert_macros.h" 27 #include "concat_macros.h" 28 29 auto test = []<class CharT, class... Args>( 30 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { 31 std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)); 32 TEST_REQUIRE(out == expected, 33 TEST_WRITE_CONCATENATED( 34 "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n')); 35 }; 36 37 auto test_exception = 38 []<class CharT, class... Args>( 39 [[maybe_unused]] std::string_view what, 40 [[maybe_unused]] std::basic_string_view<CharT> fmt, 41 [[maybe_unused]] Args&&... args) { 42 TEST_VALIDATE_EXCEPTION( 43 std::format_error, 44 [&]([[maybe_unused]] const std::format_error& e) { 45 TEST_LIBCPP_REQUIRE( 46 e.what() == what, 47 TEST_WRITE_CONCATENATED( 48 "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n')); 49 }, 50 TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...))); 51 }; 52 53 int main(int, char**) { 54 format_tests<char, execution_modus::full>(test, test_exception); 55 56 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 57 format_tests_char_to_wchar_t(test); 58 format_tests<wchar_t, execution_modus::full>(test, test_exception); 59 #endif 60 61 return 0; 62 } 63