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 hard_link_count(const path& p); 15 // uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept; 16 17 #include <experimental/filesystem> 18 #include <type_traits> 19 #include <cassert> 20 21 #include "test_macros.h" 22 #include "rapid-cxx-test.hpp" 23 #include "filesystem_test_helper.hpp" 24 25 using namespace std::experimental::filesystem; 26 27 TEST_SUITE(hard_link_count_test_suite) 28 29 TEST_CASE(signature_test) 30 { 31 const path p; ((void)p); 32 std::error_code ec; ((void)ec); 33 ASSERT_SAME_TYPE(decltype(hard_link_count(p)), uintmax_t); 34 ASSERT_SAME_TYPE(decltype(hard_link_count(p, ec)), uintmax_t); 35 ASSERT_NOT_NOEXCEPT(hard_link_count(p)); 36 ASSERT_NOEXCEPT(hard_link_count(p, ec)); 37 } 38 39 TEST_CASE(hard_link_count_for_file) 40 { 41 TEST_CHECK(hard_link_count(StaticEnv::File) == 1); 42 std::error_code ec; 43 TEST_CHECK(hard_link_count(StaticEnv::File, ec) == 1); 44 } 45 46 TEST_CASE(hard_link_count_for_directory) 47 { 48 uintmax_t DirExpect = 3; // hard link from . .. and Dir2 49 uintmax_t Dir3Expect = 2; // hard link from . .. 50 uintmax_t DirExpectAlt = DirExpect; 51 uintmax_t Dir3ExpectAlt = Dir3Expect; 52 #if defined(__APPLE__) 53 // Filesystems formatted with case sensitive hfs+ behave unixish as 54 // expected. Normal hfs+ filesystems report the number of directory 55 // entries instead. 56 DirExpectAlt = 5; // . .. Dir2 file1 file2 57 Dir3Expect = 3; // . .. file5 58 #endif 59 TEST_CHECK(hard_link_count(StaticEnv::Dir) == DirExpect || 60 hard_link_count(StaticEnv::Dir) == DirExpectAlt || 61 hard_link_count(StaticEnv::Dir) == 1); 62 TEST_CHECK(hard_link_count(StaticEnv::Dir3) == Dir3Expect || 63 hard_link_count(StaticEnv::Dir3) == Dir3ExpectAlt || 64 hard_link_count(StaticEnv::Dir3) == 1); 65 66 std::error_code ec; 67 TEST_CHECK(hard_link_count(StaticEnv::Dir, ec) == DirExpect || 68 hard_link_count(StaticEnv::Dir, ec) == DirExpectAlt || 69 hard_link_count(StaticEnv::Dir) == 1); 70 TEST_CHECK(hard_link_count(StaticEnv::Dir3, ec) == Dir3Expect || 71 hard_link_count(StaticEnv::Dir3, ec) == Dir3ExpectAlt || 72 hard_link_count(StaticEnv::Dir3) == 1); 73 } 74 TEST_CASE(hard_link_count_increments_test) 75 { 76 scoped_test_env env; 77 const path file = env.create_file("file", 42); 78 TEST_CHECK(hard_link_count(file) == 1); 79 80 env.create_hardlink(file, "file_hl"); 81 TEST_CHECK(hard_link_count(file) == 2); 82 } 83 84 85 TEST_CASE(hard_link_count_error_cases) 86 { 87 const path testCases[] = { 88 StaticEnv::BadSymlink, 89 StaticEnv::DNE 90 }; 91 const uintmax_t expect = static_cast<uintmax_t>(-1); 92 for (auto& TC : testCases) { 93 std::error_code ec; 94 TEST_CHECK(hard_link_count(TC, ec) == expect); 95 TEST_CHECK(ec); 96 } 97 } 98 99 TEST_SUITE_END() 100
