61 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// template<class... Args>18// string format(const locale& loc, format-string<Args...> fmt, const Args&... args);19// template<class... Args>20// wstring format(const locale& loc, wformat-string<Args...> fmt, const Args&... args);21 22#include <format>23#include <cassert>24#include <iostream>25#include <vector>26 27#include "test_macros.h"28#include "format_tests.h"29#include "string_literal.h"30#include "test_format_string.h"31#include "assert_macros.h"32#include "concat_macros.h"33 34auto test =35 []<class CharT, class... Args>(36 std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {37 std::basic_string<CharT> out = std::format(std::locale(), fmt, std::forward<Args>(args)...);38 TEST_REQUIRE(39 out == expected,40 TEST_WRITE_CONCATENATED(41 "\nFormat string ", fmt.get(), "\nExpected output ", expected, "\nActual output ", out, '\n'));42 };43 44auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {45 // After P2216 most exceptions thrown by std::format become ill-formed.46 // Therefore this tests does nothing.47 // A basic ill-formed test is done in format.locale.verify.cpp48 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.49};50 51int main(int, char**) {52 format_tests<char, execution_modus::full>(test, test_exception);53 54#ifndef TEST_HAS_NO_WIDE_CHARACTERS55 format_tests_char_to_wchar_t(test);56 format_tests<wchar_t, execution_modus::full>(test, test_exception);57#endif58 59 return 0;60}61