| //===----------------------------------------------------------------------===// |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20, c++23 |
| // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME |
| |
| // XFAIL: availability-fp_to_chars-missing |
| |
| // <format> |
| |
| // Tests the behavior of |
| // |
| // runtime-format-string<char> runtime_format(string_view fmt) noexcept; |
| // runtime-format-string<wchar_t> runtime_format(wstring_view fmt) noexcept; |
| // |
| // and |
| // |
| // template<class charT, class... Args> |
| // struct basic_format_string { |
| // ... |
| // basic_format_string(runtime-format-string<charT> s) noexcept : str(s.str) {} |
| // ... |
| // } |
| // |
| // This is done by testing it in the top-level functions: |
| // |
| // template<class... Args> |
| // string format(format_string<Args...> fmt, Args&&... args); |
| // template<class... Args> |
| // wstring format(wformat_string<Args...> fmt, Args&&... args); |
| // |
| // The basics of runtime_format and basic_format_string's constructor are tested in |
| // - libcxx/test/std/utilities/format/format.syn/runtime_format_string.pass.cpp |
| // - libcxx/test/std/utilities/format/format.fmt.string/ctor.runtime-format-string.pass.cpp |
| |
| #include <format> |
| #include <cassert> |
| #include <vector> |
| |
| #include "test_macros.h" |
| #include "format_tests.h" |
| #include "string_literal.h" |
| #include "assert_macros.h" |
| #include "concat_macros.h" |
| |
| auto test = []<class CharT, class... Args>( |
| std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr { |
| std::basic_string<CharT> out = std::format(std::runtime_format(fmt), std::forward<Args>(args)...); |
| TEST_REQUIRE(out == expected, |
| TEST_WRITE_CONCATENATED( |
| "\nFormat string ", fmt, "\nExpected output ", expected, "\nActual output ", out, '\n')); |
| }; |
| |
| auto test_exception = |
| []<class CharT, class... Args>( |
| [[maybe_unused]] std::string_view what, |
| [[maybe_unused]] std::basic_string_view<CharT> fmt, |
| [[maybe_unused]] Args&&... args) { |
| TEST_VALIDATE_EXCEPTION( |
| std::format_error, |
| [&]([[maybe_unused]] const std::format_error& e) { |
| TEST_LIBCPP_REQUIRE( |
| e.what() == what, |
| TEST_WRITE_CONCATENATED( |
| "\nFormat string ", fmt, "\nExpected exception ", what, "\nActual exception ", e.what(), '\n')); |
| }, |
| TEST_IGNORE_NODISCARD std::format(std::runtime_format(fmt), std::forward<Args>(args)...)); |
| }; |
| |
| int main(int, char**) { |
| format_tests<char, execution_modus::partial>(test, test_exception); |
| |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| format_tests_char_to_wchar_t(test); |
| format_tests<wchar_t, execution_modus::partial>(test, test_exception); |
| #endif |
| |
| return 0; |
| } |