1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14
10// UNSUPPORTED: availability-filesystem-missing
11
12// These tests require locale for non-char paths
13// UNSUPPORTED: no-localization
14
15// <filesystem>
16
17// class path
18
19// template <class ECharT, class Traits = char_traits<ECharT>,
20// class Allocator = allocator<ECharT>>
21// basic_string<ECharT, Traits, Allocator>
22// generic_string(const Allocator& a = Allocator()) const;
23
24#include <filesystem>
25#include <cassert>
26#include <string>
27#include <type_traits>
28
29#include "count_new.h"
30#include "make_string.h"
31#include "min_allocator.h"
32#include "test_iterators.h"
33#include "test_macros.h"
34namespace fs = std::filesystem;
35
36MultiStringType longString = MKSTR("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/123456789/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
37
38// generic_string<C, T, A> forwards to string<C, T, A>. Tests for
39// string<C, T, A>() are in "path.native.obs/string_alloc.pass.cpp".
40// generic_string is minimally tested here.
41template <class CharT>
42void doAllocTest()
43{
44 using namespace fs;
45 using Traits = std::char_traits<CharT>;
46 using Alloc = malloc_allocator<CharT>;
47 using Str = std::basic_string<CharT, Traits, Alloc>;
48 const CharT* expect = longString;
49 const path p((const char*)longString);
50 {
51 // On Windows, charset conversions cause allocations outside of the
52 // provided allocator.
53 TEST_NOT_WIN32(DisableAllocationGuard g);
54 Alloc a;
55 Alloc::disable_default_constructor = true;
56 Str s = p.generic_string<CharT, Traits, Alloc>(a);
57 assert(s == expect);
58 assert(Alloc::alloc_count > 0);
59 assert(Alloc::outstanding_alloc() == 1);
60 Alloc::disable_default_constructor = false;
61 }
62}
63
64int main(int, char**)
65{
66 doAllocTest<char>();
67#ifndef TEST_HAS_NO_WIDE_CHARACTERS
68 doAllocTest<wchar_t>();
69#endif
70 doAllocTest<char16_t>();
71 doAllocTest<char32_t>();
72#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
73 doAllocTest<char8_t>();
74#endif
75 return 0;
76}
77

source code of libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/generic_string_alloc.pass.cpp