66 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++17, c++2010// UNSUPPORTED: no-threads11 12// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME13 14// TODO FMT This test should not require std::to_chars(floating-point)15// XFAIL: availability-fp_to_chars-missing16 17// <thread>18 19// template<class charT>20// struct formatter<thread::id, charT>;21 22// string vformat(string_view fmt, format_args args);23// wstring vformat(wstring_view fmt, wformat_args args);24 25#include <format>26#include <cassert>27 28#include "assert_macros.h"29#include "concat_macros.h"30#include "format.functions.tests.h"31#include "test_macros.h"32 33auto test = []<class CharT, class... Args>(34 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {35 std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));36 TEST_REQUIRE(out == expected,37 TEST_WRITE_CONCATENATED(38 "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n'));39};40 41auto test_exception =42 []<class CharT, class... Args>(43 [[maybe_unused]] std::string_view what,44 [[maybe_unused]] std::basic_string_view<CharT> fmt,45 [[maybe_unused]] Args&&... args) {46 TEST_VALIDATE_EXCEPTION(47 std::format_error,48 [&]([[maybe_unused]] const std::format_error& e) {49 TEST_LIBCPP_REQUIRE(50 e.what() == what,51 TEST_WRITE_CONCATENATED(52 "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n'));53 },54 TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)));55 };56 57int main(int, char**) {58 format_tests<char>(test, test_exception);59 60#ifndef TEST_HAS_NO_WIDE_CHARACTERS61 format_tests<wchar_t>(test, test_exception);62#endif63 64 return 0;65}66