1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
//===----------------------------------------------------------------------===//
// 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
// UNSUPPORTED: libcpp-has-no-incomplete-format
// TODO FMT Fix this test using GCC, it currently times out.
// UNSUPPORTED: gcc-12
// This test requires the dylib support introduced in D92214.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
// [container.adaptors.format]
// For each of queue, priority_queue, and stack, the library provides the
// following formatter specialization where adaptor-type is the name of the
// template:
//
// template<class charT, class T, formattable<charT> Container, class... U>
// struct formatter<adaptor-type<T, Container, U...>, charT>
// template<class FormatContext>
// typename FormatContext::iterator
// format(maybe-const-adaptor& r, FormatContext& ctx) const;
// Note this tests the basics of this function. It's tested in more detail in
// the format functions test.
#include <array>
#include <cassert>
#include <concepts>
#include <format>
#include <queue>
#include <stack>
#include "test_format_context.h"
#include "test_macros.h"
#include "make_string.h"
#define SV(S) MAKE_STRING_VIEW(CharT, S)
template <class StringViewT, class Arg>
void test_format(StringViewT expected, Arg arg) {
using CharT = typename StringViewT::value_type;
using String = std::basic_string<CharT>;
using OutIt = std::back_insert_iterator<String>;
using FormatCtxT = std::basic_format_context<OutIt, CharT>;
const std::formatter<Arg, CharT> formatter;
String result;
OutIt out = std::back_inserter(result);
FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
formatter.format(arg, format_ctx);
assert(result == expected);
}
template <class CharT>
void test_fmt() {
std::array input{1, 42, 99, 0};
test_format(SV("[1, 42, 99, 0]"), std::queue<int>{input.begin(), input.end()});
test_format(SV("[99, 42, 1, 0]"), std::priority_queue<int>{input.begin(), input.end()});
test_format(SV("[1, 42, 99, 0]"), std::stack<int>{input.begin(), input.end()});
}
void test() {
test_fmt<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test_fmt<wchar_t>();
#endif
}
int main(int, char**) {
test();
return 0;
}
|
