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 // Note this formatter shows additional information when tests are failing. 17 // This aids the development. Since other formatters fail in the same fashion 18 // they don't have this additional output. 19 20 // <format> 21 22 // template<class... Args> 23 // string format(format-string<Args...> fmt, const Args&... args); 24 // template<class... Args> 25 // wstring format(wformat-string<Args...> fmt, const Args&... args); 26 27 #include <format> 28 #include <cassert> 29 #include <vector> 30 31 #include "test_macros.h" 32 #include "format_tests.h" 33 #include "string_literal.h" 34 #include "test_format_string.h" 35 #include "assert_macros.h" 36 #include "concat_macros.h" 37 38 auto test = 39 []<class CharT, class... Args>( 40 std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr { 41 std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...); 42 TEST_REQUIRE( 43 out == expected, 44 TEST_WRITE_CONCATENATED( 45 "\nFormat string ", fmt.get(), "\nExpected output ", expected, "\nActual output ", out, '\n')); 46 }; 47 48 auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) { 49 // After P2216 most exceptions thrown by std::format become ill-formed. 50 // Therefore this tests does nothing. 51 // A basic ill-formed test is done in format.verify.cpp 52 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument. 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