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
10
11 // <filesystem>
12
13 // bool is_empty(path const& p);
14 // bool is_empty(path const& p, std::error_code& ec);
15
16 #include "filesystem_include.h"
17 #include <type_traits>
18 #include <cassert>
19
20 #include "test_macros.h"
21 #include "rapid-cxx-test.h"
22 #include "filesystem_test_helper.h"
23
24 using namespace fs;
25
26 TEST_SUITE(is_empty_test_suite)
27
TEST_CASE(signature_test)28 TEST_CASE(signature_test)
29 {
30 const path p; ((void)p);
31 std::error_code ec; ((void)ec);
32 ASSERT_NOT_NOEXCEPT(is_empty(p, ec));
33 ASSERT_NOT_NOEXCEPT(is_empty(p));
34 }
35
TEST_CASE(test_exist_not_found)36 TEST_CASE(test_exist_not_found)
37 {
38 static_test_env static_env;
39 const path p = static_env.DNE;
40 std::error_code ec;
41 TEST_CHECK(is_empty(p, ec) == false);
42 TEST_CHECK(ec);
43 TEST_CHECK_THROW(filesystem_error, is_empty(p));
44 }
45
TEST_CASE(test_is_empty_directory)46 TEST_CASE(test_is_empty_directory)
47 {
48 static_test_env static_env;
49 TEST_CHECK(!is_empty(static_env.Dir));
50 TEST_CHECK(!is_empty(static_env.SymlinkToDir));
51 }
52
TEST_CASE(test_is_empty_directory_dynamic)53 TEST_CASE(test_is_empty_directory_dynamic)
54 {
55 scoped_test_env env;
56 TEST_CHECK(is_empty(env.test_root));
57 env.create_file("foo", 42);
58 TEST_CHECK(!is_empty(env.test_root));
59 }
60
TEST_CASE(test_is_empty_file)61 TEST_CASE(test_is_empty_file)
62 {
63 static_test_env static_env;
64 TEST_CHECK(is_empty(static_env.EmptyFile));
65 TEST_CHECK(!is_empty(static_env.NonEmptyFile));
66 }
67
TEST_CASE(test_is_empty_fails)68 TEST_CASE(test_is_empty_fails)
69 {
70 scoped_test_env env;
71 #ifdef _WIN32
72 // Windows doesn't support setting perms::none to trigger failures
73 // reading directories; test using a special inaccessible directory
74 // instead.
75 const path p = GetWindowsInaccessibleDir();
76 if (p.empty())
77 TEST_UNSUPPORTED();
78 #else
79 const path dir = env.create_dir("dir");
80 const path p = env.create_dir("dir/dir2");
81 permissions(dir, perms::none);
82 #endif
83
84 std::error_code ec;
85 TEST_CHECK(is_empty(p, ec) == false);
86 TEST_CHECK(ec);
87
88 TEST_CHECK_THROW(filesystem_error, is_empty(p));
89 }
90
TEST_CASE(test_directory_access_denied)91 TEST_CASE(test_directory_access_denied)
92 {
93 scoped_test_env env;
94 #ifdef _WIN32
95 // Windows doesn't support setting perms::none to trigger failures
96 // reading directories; test using a special inaccessible directory
97 // instead.
98 const path dir = GetWindowsInaccessibleDir();
99 if (dir.empty())
100 TEST_UNSUPPORTED();
101 #else
102 const path dir = env.create_dir("dir");
103 const path file1 = env.create_file("dir/file", 42);
104 permissions(dir, perms::none);
105 #endif
106
107 std::error_code ec = GetTestEC();
108 TEST_CHECK(is_empty(dir, ec) == false);
109 TEST_CHECK(ec);
110 TEST_CHECK(ec != GetTestEC());
111
112 TEST_CHECK_THROW(filesystem_error, is_empty(dir));
113 }
114
115
116 #ifndef _WIN32
TEST_CASE(test_fifo_fails)117 TEST_CASE(test_fifo_fails)
118 {
119 scoped_test_env env;
120 const path fifo = env.create_fifo("fifo");
121
122 std::error_code ec = GetTestEC();
123 TEST_CHECK(is_empty(fifo, ec) == false);
124 TEST_CHECK(ec);
125 TEST_CHECK(ec != GetTestEC());
126
127 TEST_CHECK_THROW(filesystem_error, is_empty(fifo));
128 }
129 #endif
130
131 TEST_SUITE_END()
132