1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17 10 // UNSUPPORTED: no-localization 11 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME 12 13 // XFAIL: availability-fp_to_chars-missing 14 15 // <format> 16 17 // string vformat(const locale& loc, string_view fmt, format_args args); 18 // wstring vformat(const locale& loc, 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 #include "assert_macros.h" 28 #include "concat_macros.h" 29 30 auto test = []<class CharT, class... Args>( 31 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { 32 std::basic_string<CharT> out = std::vformat(std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...)); 33 TEST_REQUIRE(out == expected, 34 TEST_WRITE_CONCATENATED( 35 "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n')); 36 }; 37 38 auto test_exception = 39 []<class CharT, class... Args>( 40 [[maybe_unused]] std::string_view what, 41 [[maybe_unused]] std::basic_string_view<CharT> fmt, 42 [[maybe_unused]] Args&&... args) { 43 TEST_VALIDATE_EXCEPTION( 44 std::format_error, 45 [&]([[maybe_unused]] const std::format_error& e) { 46 TEST_LIBCPP_REQUIRE( 47 e.what() == what, 48 TEST_WRITE_CONCATENATED( 49 "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n')); 50 }, 51 TEST_IGNORE_NODISCARD std::vformat(std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...))); 52 }; 53 54 int main(int, char**) { 55 format_tests<char, execution_modus::full>(test, test_exception); 56 57 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 58 format_tests_char_to_wchar_t(test); 59 format_tests<wchar_t, execution_modus::full>(test, test_exception); 60 #endif 61 62 return 0; 63 } 64