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++98, c++03
10 
11 // <filesystem>
12 
13 // uintmax_t remove_all(const path& p);
14 // uintmax_t remove_all(const path& p, error_code& ec) noexcept;
15 
16 #include "filesystem_include.h"
17 
18 #include "test_macros.h"
19 #include "rapid-cxx-test.h"
20 #include "filesystem_test_helper.h"
21 
22 using namespace fs;
23 
24 TEST_SUITE(filesystem_remove_all_test_suite)
25 
26 TEST_CASE(test_signatures)
27 {
28     const path p; ((void)p);
29     std::error_code ec; ((void)ec);
30     ASSERT_SAME_TYPE(decltype(fs::remove_all(p)), std::uintmax_t);
31     ASSERT_SAME_TYPE(decltype(fs::remove_all(p, ec)), std::uintmax_t);
32 
33     ASSERT_NOT_NOEXCEPT(fs::remove_all(p));
34     ASSERT_NOT_NOEXCEPT(fs::remove_all(p, ec));
35 }
36 
37 TEST_CASE(test_error_reporting)
38 {
39     auto checkThrow = [](path const& f, const std::error_code& ec)
40     {
41 #ifndef TEST_HAS_NO_EXCEPTIONS
42         try {
43             fs::remove_all(f);
44             return false;
45         } catch (filesystem_error const& err) {
46             return err.path1() == f
47                 && err.path2() == ""
48                 && err.code() == ec;
49         }
50 #else
51         ((void)f); ((void)ec);
52         return true;
53 #endif
54     };
55     scoped_test_env env;
56     const path non_empty_dir = env.create_dir("dir");
57     env.create_file(non_empty_dir / "file1", 42);
58     const path bad_perms_dir = env.create_dir("bad_dir");
59     const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
60     permissions(bad_perms_dir, perms::none);
61     const path bad_perms_file = env.create_file("file2", 42);
62     permissions(bad_perms_file, perms::none);
63 
64     const path testCases[] = {
65         file_in_bad_dir
66     };
67     const auto BadRet = static_cast<std::uintmax_t>(-1);
68     for (auto& p : testCases) {
69         std::error_code ec;
70 
71         TEST_CHECK(fs::remove_all(p, ec) == BadRet);
72         TEST_CHECK(ec);
73         TEST_CHECK(checkThrow(p, ec));
74     }
75 
76     // PR#35780
77     const path testCasesNonexistant[] = {
78         "",
79         env.make_env_path("dne")
80     };
81     for (auto &p : testCasesNonexistant) {
82         std::error_code ec;
83 
84         TEST_CHECK(fs::remove_all(p, ec) == 0);
85         TEST_CHECK(!ec);
86     }
87 }
88 
89 TEST_CASE(basic_remove_all_test)
90 {
91     scoped_test_env env;
92     const path dne = env.make_env_path("dne");
93     const path link = env.create_symlink(dne, "link");
94     const path nested_link = env.make_env_path("nested_link");
95     create_symlink(link, nested_link);
96     const path testCases[] = {
97         env.create_file("file", 42),
98         env.create_dir("empty_dir"),
99         nested_link,
100         link
101     };
102     for (auto& p : testCases) {
103         std::error_code ec = std::make_error_code(std::errc::address_in_use);
104         TEST_CHECK(remove(p, ec));
105         TEST_CHECK(!ec);
106         TEST_CHECK(!exists(symlink_status(p)));
107     }
108 }
109 
110 TEST_CASE(symlink_to_dir)
111 {
112     scoped_test_env env;
113     const path dir = env.create_dir("dir");
114     const path file = env.create_file(dir / "file", 42);
115     const path link = env.create_symlink(dir, "sym");
116 
117     {
118         std::error_code ec = std::make_error_code(std::errc::address_in_use);
119         TEST_CHECK(remove_all(link, ec) == 1);
120         TEST_CHECK(!ec);
121         TEST_CHECK(!exists(symlink_status(link)));
122         TEST_CHECK(exists(dir));
123         TEST_CHECK(exists(file));
124     }
125 }
126 
127 
128 TEST_CASE(nested_dir)
129 {
130     scoped_test_env env;
131     const path dir = env.create_dir("dir");
132     const path dir1 = env.create_dir(dir / "dir1");
133     const path out_of_dir_file = env.create_file("file1", 42);
134     const path all_files[] = {
135         dir, dir1,
136         env.create_file(dir / "file1", 42),
137         env.create_symlink(out_of_dir_file, dir / "sym1"),
138         env.create_file(dir1 / "file2", 42),
139         env.create_symlink(dir, dir1 / "sym2")
140     };
141     const std::size_t expected_count = sizeof(all_files) / sizeof(all_files[0]);
142 
143     std::error_code ec = std::make_error_code(std::errc::address_in_use);
144     TEST_CHECK(remove_all(dir, ec) == expected_count);
145     TEST_CHECK(!ec);
146     for (auto const& p : all_files) {
147         TEST_CHECK(!exists(symlink_status(p)));
148     }
149     TEST_CHECK(exists(out_of_dir_file));
150 }
151 
152 TEST_SUITE_END()
153