1 //===----------------------------------------------------------------------===// 2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 3 // See https://llvm.org/LICENSE.txt for license information. 4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 5 // 6 //===----------------------------------------------------------------------===// 7 8 // UNSUPPORTED: c++03, c++11, c++14, c++17 9 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME 10 11 // XFAIL: availability-fp_to_chars-missing 12 13 // <format> 14 15 // string vformat(string_view fmt, format_args args); 16 // wstring vformat(wstring_view fmt, wformat_args args); 17 18 #include <format> 19 #include <cassert> 20 #include <vector> 21 22 #include "test_macros.h" 23 #include "format_tests.h" 24 #include "string_literal.h" 25 #include "assert_macros.h" 26 #include "concat_macros.h" 27 28 auto test = []<class CharT, class... Args>( 29 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { 30 std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)); 31 TEST_REQUIRE(out == expected, 32 TEST_WRITE_CONCATENATED( 33 "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n')); 34 }; 35 36 auto test_exception = 37 []<class CharT, class... Args>( 38 [[maybe_unused]] std::string_view what, 39 [[maybe_unused]] std::basic_string_view<CharT> fmt, 40 [[maybe_unused]] Args&&... args) { 41 TEST_VALIDATE_EXCEPTION( 42 std::format_error, 43 [&]([[maybe_unused]] const std::format_error& e) { 44 TEST_LIBCPP_REQUIRE( 45 e.what() == what, 46 TEST_WRITE_CONCATENATED( 47 "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n')); 48 }, 49 TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...))); 50 }; 51 52 int main(int, char**) { 53 format_tests<char, execution_modus::full>(test, test_exception); 54 55 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 56 format_tests_char_to_wchar_t(test); 57 format_tests<wchar_t, execution_modus::full>(test, test_exception); 58 #endif 59 60 return 0; 61 } 62