| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 10 | // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME |
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| 11 | |
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| 12 | // XFAIL: availability-fp_to_chars-missing |
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| 13 | |
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| 14 | // <format> |
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| 15 | |
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| 16 | // template<class... Args> |
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| 17 | // size_t formatted_size(format-string<Args...> fmt, const Args&... args); |
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| 18 | // template<class... Args> |
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| 19 | // size_t formatted_size(wformat-string<Args...> fmt, const Args&... args); |
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| 20 | |
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| 21 | #include <format> |
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| 22 | #include <cassert> |
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| 23 | #include <vector> |
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| 24 | |
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| 25 | #include "test_macros.h" |
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| 26 | #include "format_tests.h" |
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| 27 | #include "string_literal.h" |
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| 28 | #include "test_format_string.h" |
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| 29 | |
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| 30 | auto test = |
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| 31 | []<class CharT, class... Args>( |
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| 32 | std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr { |
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| 33 | std::size_t size = std::formatted_size(fmt, std::forward<Args>(args)...); |
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| 34 | assert(size == expected.size()); |
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| 35 | }; |
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| 36 | |
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| 37 | auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) { |
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| 38 | // After P2216 most exceptions thrown by std::formatted_siz3 become ill-formed. |
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| 39 | // Therefore this tests does nothing. |
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| 40 | // A basic ill-formed test is done in formatted_size.verify.cpp |
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| 41 | // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument. |
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| 42 | }; |
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| 43 | |
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| 44 | int main(int, char**) { |
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| 45 | format_tests<char, execution_modus::partial>(check: test, check_exception: test_exception); |
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| 46 | |
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| 47 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 48 | format_tests_char_to_wchar_t(check: test); |
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| 49 | format_tests<wchar_t, execution_modus::partial>(check: test, check_exception: test_exception); |
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| 50 | #endif |
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| 51 | |
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| 52 | return 0; |
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| 53 | } |
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| 54 | |
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