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: libcpp-has-no-incomplete-format 10 // TODO FMT Evaluate gcc-12 status 11 // UNSUPPORTED: gcc-12 12 13 // This test requires std::to_chars(floating-point), which is in the dylib 14 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}} 15 16 // <format> 17 18 // string vformat(string_view fmt, format_args args); 19 // wstring vformat(wstring_view fmt, wformat_args args); 20 21 #include <format> 22 #include <cassert> 23 #include <vector> 24 25 #include "test_macros.h" 26 #include "format_tests.h" 27 #include "string_literal.h" 28 #include "assert_macros.h" 29 #include "concat_macros.h" 30 31 auto test = []<class CharT, class... Args>( 32 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { 33 std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)); 34 TEST_REQUIRE(out == expected, 35 TEST_WRITE_CONCATENATED( 36 "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n')); 37 }; 38 39 auto test_exception = 40 []<class CharT, class... Args>( 41 [[maybe_unused]] std::string_view what, 42 [[maybe_unused]] std::basic_string_view<CharT> fmt, 43 [[maybe_unused]] Args&&... args) { 44 TEST_VALIDATE_EXCEPTION( 45 std::format_error, 46 [&]([[maybe_unused]] const std::format_error& e) { 47 TEST_LIBCPP_REQUIRE( 48 e.what() == what, 49 TEST_WRITE_CONCATENATED( 50 "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n')); 51 }, 52 TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...))); 53 }; 54 55 int main(int, char**) { 56 format_tests<char, execution_modus::full>(test, test_exception); 57 58 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 59 format_tests_char_to_wchar_t(test); 60 format_tests<wchar_t, execution_modus::full>(test, test_exception); 61 #endif 62 63 return 0; 64 } 65