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 // path read_symlink(const path& p);
15 // path read_symlink(const path& p, error_code& ec);
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_read_symlink_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::read_symlink(p)), fs::path);
33 ASSERT_SAME_TYPE(decltype(fs::read_symlink(p, ec)), fs::path);
34
35 ASSERT_NOT_NOEXCEPT(fs::read_symlink(p));
36 // Not noexcept because of narrow contract
37 ASSERT_NOT_NOEXCEPT(fs::read_symlink(p, ec));
38 }
39
TEST_CASE(test_error_reporting)40 TEST_CASE(test_error_reporting)
41 {
42 auto checkThrow = [](path const& f, const std::error_code& ec)
43 {
44 #ifndef TEST_HAS_NO_EXCEPTIONS
45 try {
46 fs::read_symlink(f);
47 return false;
48 } catch (filesystem_error const& err) {
49 return err.path1() == f
50 && err.path2() == ""
51 && err.code() == ec;
52 }
53 #else
54 ((void)f); ((void)ec);
55 return true;
56 #endif
57 };
58
59 scoped_test_env env;
60 const path cases[] = {
61 env.make_env_path("dne"),
62 env.create_file("file", 42),
63 env.create_dir("dir")
64 };
65 for (path const& p : cases) {
66 std::error_code ec;
67 const path ret = fs::read_symlink(p, ec);
68 TEST_REQUIRE(ec);
69 TEST_CHECK(ret == path{});
70 TEST_CHECK(checkThrow(p, ec));
71 }
72
73 }
74
TEST_CASE(basic_symlink_test)75 TEST_CASE(basic_symlink_test)
76 {
77 scoped_test_env env;
78 const path dne = env.make_env_path("dne");
79 const path file = env.create_file("file", 42);
80 const path dir = env.create_dir("dir");
81 const path link = env.create_symlink(dne, "link");
82 const path nested_link = env.make_env_path("nested_link");
83 create_symlink(link, nested_link);
84 struct TestCase {
85 path symlink;
86 path expected;
87 } testCases[] = {
88 {env.create_symlink(dne, "dne_link"), dne},
89 {env.create_symlink(file, "file_link"), file},
90 {env.create_symlink(dir, "dir_link"), dir},
91 {nested_link, link}
92 };
93 for (auto& TC : testCases) {
94 std::error_code ec = std::make_error_code(std::errc::address_in_use);
95 const path ret = read_symlink(TC.symlink, ec);
96 TEST_CHECK(!ec);
97 TEST_CHECK(ret == TC.expected);
98 }
99 }
100
101 TEST_SUITE_END()
102