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 // <filesystem> 13 14 // path read_symlink(const path& p); 15 // path read_symlink(const path& p, error_code& ec); 16 17 #include "filesystem_include.hpp" 18 19 #include "test_macros.h" 20 #include "rapid-cxx-test.hpp" 21 #include "filesystem_test_helper.hpp" 22 23 using namespace fs; 24 25 TEST_SUITE(filesystem_read_symlink_test_suite) 26 27 TEST_CASE(test_signatures) 28 { 29 const path p; ((void)p); 30 std::error_code ec; ((void)ec); 31 ASSERT_SAME_TYPE(decltype(fs::read_symlink(p)), fs::path); 32 ASSERT_SAME_TYPE(decltype(fs::read_symlink(p, ec)), fs::path); 33 34 ASSERT_NOT_NOEXCEPT(fs::read_symlink(p)); 35 // Not noexcept because of narrow contract 36 ASSERT_NOT_NOEXCEPT(fs::read_symlink(p, ec)); 37 } 38 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::read_symlink(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 58 scoped_test_env env; 59 const path cases[] = { 60 env.make_env_path("dne"), 61 env.create_file("file", 42), 62 env.create_dir("dir") 63 }; 64 for (path const& p : cases) { 65 std::error_code ec; 66 const path ret = fs::read_symlink(p, ec); 67 TEST_REQUIRE(ec); 68 TEST_CHECK(ret == path{}); 69 TEST_CHECK(checkThrow(p, ec)); 70 } 71 72 } 73 74 TEST_CASE(basic_symlink_test) 75 { 76 scoped_test_env env; 77 const path dne = env.make_env_path("dne"); 78 const path file = env.create_file("file", 42); 79 const path dir = env.create_dir("dir"); 80 const path link = env.create_symlink(dne, "link"); 81 const path nested_link = env.make_env_path("nested_link"); 82 create_symlink(link, nested_link); 83 struct TestCase { 84 path symlink; 85 path expected; 86 } testCases[] = { 87 {env.create_symlink(dne, "dne_link"), dne}, 88 {env.create_symlink(file, "file_link"), file}, 89 {env.create_symlink(dir, "dir_link"), dir}, 90 {nested_link, link} 91 }; 92 for (auto& TC : testCases) { 93 std::error_code ec = std::make_error_code(std::errc::address_in_use); 94 const path ret = read_symlink(TC.symlink, ec); 95 TEST_CHECK(!ec); 96 TEST_CHECK(ret == TC.expected); 97 } 98 } 99 100 TEST_SUITE_END() 101
