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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17 10 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME 11 12 // XFAIL: availability-fp_to_chars-missing 13 14 // Note this formatter shows additional information when tests are failing. 15 // This aids the development. Since other formatters fail in the same fashion 16 // 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 36 auto 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 46 auto 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.cpp 50 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument. 51 }; 52 53 int main(int, char**) { 54 format_tests<char, execution_modus::full>(test, test_exception); 55 56 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 57 format_tests_char_to_wchar_t(test); 58 format_tests<wchar_t, execution_modus::full>(test, test_exception); 59 #endif 60 61 return 0; 62 } 63