64 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++1710// UNSUPPORTED: no-localization11// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME12 13// XFAIL: availability-fp_to_chars-missing14 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 30auto 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 38auto 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 54int main(int, char**) {55 format_tests<char, execution_modus::full>(test, test_exception);56 57#ifndef TEST_HAS_NO_WIDE_CHARACTERS58 format_tests_char_to_wchar_t(test);59 format_tests<wchar_t, execution_modus::full>(test, test_exception);60#endif61 62 return 0;63}64