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, c++20
9
10// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
11
12// XFAIL: availability-fp_to_chars-missing
13
14// <vector>
15
16// template<class T, class charT>
17// requires is-vector-bool-reference<T>
18// struct formatter<T, charT>
19
20// string vformat(string_view fmt, format_args args);
21// wstring vformat(wstring_view fmt, wformat_args args);
22
23#include <format>
24#include <cassert>
25
26#include "format.functions.tests.h"
27#include "test_macros.h"
28#include "assert_macros.h"
29#include "concat_macros.h"
30
31auto test = []<class CharT, class... Args>(
32 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
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
39auto 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
55int main(int, char**) {
56 format_tests<char>(check: test, check_exception: test_exception);
57
58#ifndef TEST_HAS_NO_WIDE_CHARACTERS
59 format_tests<wchar_t>(check: test, check_exception: test_exception);
60#endif
61
62 return 0;
63}
64

source code of libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.vformat.pass.cpp