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1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // UNSUPPORTED: c++98, c++03
11 
12 // <experimental/filesystem>
13 
14 // uintmax_t remove_all(const path& p);
15 // uintmax_t remove_all(const path& p, error_code& ec) noexcept;
16 
17 #include <experimental/filesystem>
18 
19 #include "test_macros.h"
20 #include "rapid-cxx-test.hpp"
21 #include "filesystem_test_helper.hpp"
22 
23 using namespace std::experimental::filesystem;
24 namespace fs = std::experimental::filesystem;
25 
26 TEST_SUITE(filesystem_remove_all_test_suite)
27 
TEST_CASE(test_signatures)28 TEST_CASE(test_signatures)
29 {
30     const path p; ((void)p);
31     std::error_code ec; ((void)ec);
32     ASSERT_SAME_TYPE(decltype(fs::remove_all(p)), std::uintmax_t);
33     ASSERT_SAME_TYPE(decltype(fs::remove_all(p, ec)), std::uintmax_t);
34 
35     ASSERT_NOT_NOEXCEPT(fs::remove_all(p));
36     ASSERT_NOT_NOEXCEPT(fs::remove_all(p, ec));
37 }
38 
TEST_CASE(test_error_reporting)39 TEST_CASE(test_error_reporting)
40 {
41     auto checkThrow = [](path const& f, const std::error_code& ec)
42     {
43 #ifndef TEST_HAS_NO_EXCEPTIONS
44         try {
45             fs::remove_all(f);
46             return false;
47         } catch (filesystem_error const& err) {
48             return err.path1() == f
49                 && err.path2() == ""
50                 && err.code() == ec;
51         }
52 #else
53         ((void)f); ((void)ec);
54         return true;
55 #endif
56     };
57     scoped_test_env env;
58     const path non_empty_dir = env.create_dir("dir");
59     env.create_file(non_empty_dir / "file1", 42);
60     const path bad_perms_dir = env.create_dir("bad_dir");
61     const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
62     permissions(bad_perms_dir, perms::none);
63     const path bad_perms_file = env.create_file("file2", 42);
64     permissions(bad_perms_file, perms::none);
65 
66     const path testCases[] = {
67         file_in_bad_dir
68     };
69     const auto BadRet = static_cast<std::uintmax_t>(-1);
70     for (auto& p : testCases) {
71         std::error_code ec;
72 
73         TEST_CHECK(fs::remove_all(p, ec) == BadRet);
74         TEST_CHECK(ec);
75         TEST_CHECK(checkThrow(p, ec));
76     }
77 
78     // PR#35780
79     const path testCasesNonexistant[] = {
80         "",
81         env.make_env_path("dne")
82     };
83     for (auto &p : testCasesNonexistant) {
84         std::error_code ec;
85 
86         TEST_CHECK(fs::remove_all(p, ec) == 0);
87         TEST_CHECK(!ec);
88     }
89 }
90 
TEST_CASE(basic_remove_all_test)91 TEST_CASE(basic_remove_all_test)
92 {
93     scoped_test_env env;
94     const path dne = env.make_env_path("dne");
95     const path link = env.create_symlink(dne, "link");
96     const path nested_link = env.make_env_path("nested_link");
97     create_symlink(link, nested_link);
98     const path testCases[] = {
99         env.create_file("file", 42),
100         env.create_dir("empty_dir"),
101         nested_link,
102         link
103     };
104     for (auto& p : testCases) {
105         std::error_code ec = std::make_error_code(std::errc::address_in_use);
106         TEST_CHECK(remove(p, ec));
107         TEST_CHECK(!ec);
108         TEST_CHECK(!exists(symlink_status(p)));
109     }
110 }
111 
TEST_CASE(symlink_to_dir)112 TEST_CASE(symlink_to_dir)
113 {
114     scoped_test_env env;
115     const path dir = env.create_dir("dir");
116     const path file = env.create_file(dir / "file", 42);
117     const path link = env.create_symlink(dir, "sym");
118 
119     {
120         std::error_code ec = std::make_error_code(std::errc::address_in_use);
121         TEST_CHECK(remove_all(link, ec) == 1);
122         TEST_CHECK(!ec);
123         TEST_CHECK(!exists(symlink_status(link)));
124         TEST_CHECK(exists(dir));
125         TEST_CHECK(exists(file));
126     }
127 }
128 
129 
TEST_CASE(nested_dir)130 TEST_CASE(nested_dir)
131 {
132     scoped_test_env env;
133     const path dir = env.create_dir("dir");
134     const path dir1 = env.create_dir(dir / "dir1");
135     const path out_of_dir_file = env.create_file("file1", 42);
136     const path all_files[] = {
137         dir, dir1,
138         env.create_file(dir / "file1", 42),
139         env.create_symlink(out_of_dir_file, dir / "sym1"),
140         env.create_file(dir1 / "file2", 42),
141         env.create_symlink(dir, dir1 / "sym2")
142     };
143     const std::size_t expected_count = sizeof(all_files) / sizeof(all_files[0]);
144 
145     std::error_code ec = std::make_error_code(std::errc::address_in_use);
146     TEST_CHECK(remove_all(dir, ec) == expected_count);
147     TEST_CHECK(!ec);
148     for (auto const& p : all_files) {
149         TEST_CHECK(!exists(symlink_status(p)));
150     }
151     TEST_CHECK(exists(out_of_dir_file));
152 }
153 
154 TEST_SUITE_END()
155