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 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 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 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
