63 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: GCC-ALWAYS_INLINE-FIXME11 12// XFAIL: availability-fp_to_chars-missing13 14// Note this formatter shows additional information when tests are failing.15// This aids the development. Since other formatters fail in the same fashion16// they don't have this additional output.17 18// <format>19 20// template<class... Args>21// string format(format-string<Args...> fmt, const Args&... args);22// template<class... Args>23// wstring format(wformat-string<Args...> fmt, const Args&... args);24 25#include <format>26#include <cassert>27#include <vector>28 29#include "test_macros.h"30#include "format_tests.h"31#include "string_literal.h"32#include "test_format_string.h"33#include "assert_macros.h"34#include "concat_macros.h"35 36auto test =37 []<class CharT, class... Args>(38 std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {39 std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);40 TEST_REQUIRE(41 out == expected,42 TEST_WRITE_CONCATENATED(43 "\nFormat string ", fmt.get(), "\nExpected output ", expected, "\nActual output ", out, '\n'));44 };45 46auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {47 // After P2216 most exceptions thrown by std::format become ill-formed.48 // Therefore this tests does nothing.49 // A basic ill-formed test is done in format.verify.cpp50 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.51};52 53int main(int, char**) {54 format_tests<char, execution_modus::full>(test, test_exception);55 56#ifndef TEST_HAS_NO_WIDE_CHARACTERS57 format_tests_char_to_wchar_t(test);58 format_tests<wchar_t, execution_modus::full>(test, test_exception);59#endif60 61 return 0;62}63