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
10// <format>
11
12// basic_format_args() noexcept;
13// template<class... Args>
14// basic_format_args(const format-arg-store<Context, Args...>& store) noexcept;
15
16#include <format>
17#include <cassert>
18
19#include "test_macros.h"
20
21template <class CharT>
22void test() {
23 int i = 1;
24 char c = 'c';
25 nullptr_t p = nullptr;
26 using Context = std::basic_format_context<CharT*, CharT>;
27 {
28 ASSERT_NOEXCEPT(std::basic_format_args<Context>{});
29
30 std::basic_format_args<Context> format_args{};
31 assert(!format_args.get(0));
32 }
33 {
34 auto store = std::make_format_args<Context>(i);
35 ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
36 std::basic_format_args<Context> format_args{store};
37 assert(format_args.get(0));
38 assert(!format_args.get(1));
39 }
40 {
41 auto store = std::make_format_args<Context>(i, c);
42 ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
43 std::basic_format_args<Context> format_args{store};
44 assert(format_args.get(0));
45 assert(format_args.get(1));
46 assert(!format_args.get(2));
47 }
48 {
49 auto store = std::make_format_args<Context>(i, c, p);
50 ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
51 std::basic_format_args<Context> format_args{store};
52 assert(format_args.get(0));
53 assert(format_args.get(1));
54 assert(format_args.get(2));
55 assert(!format_args.get(3));
56 }
57}
58
59void test() {
60 test<char>();
61#ifndef TEST_HAS_NO_WIDE_CHARACTERS
62 test<wchar_t>();
63#endif
64}
65
66int main(int, char**) {
67 test();
68
69 return 0;
70}
71

source code of libcxx/test/std/utilities/format/format.arguments/format.args/ctor.pass.cpp