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      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 remove_all(const path& p);
     15 // uintmax_t remove_all(const path& p, error_code& ec) noexcept;
     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_remove_all_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::remove_all(p)), std::uintmax_t);
     33     ASSERT_SAME_TYPE(decltype(fs::remove_all(p, ec)), std::uintmax_t);
     34 
     35     ASSERT_NOT_NOEXCEPT(fs::remove_all(p));
     36     ASSERT_NOT_NOEXCEPT(fs::remove_all(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::remove_all(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     scoped_test_env env;
     58     const path non_empty_dir = env.create_dir("dir");
     59     env.create_file(non_empty_dir / "file1", 42);
     60     const path bad_perms_dir = env.create_dir("bad_dir");
     61     const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
     62     permissions(bad_perms_dir, perms::none);
     63     const path bad_perms_file = env.create_file("file2", 42);
     64     permissions(bad_perms_file, perms::none);
     65 
     66     const path testCases[] = {
     67         file_in_bad_dir
     68     };
     69     const auto BadRet = static_cast<std::uintmax_t>(-1);
     70     for (auto& p : testCases) {
     71         std::error_code ec;
     72 
     73         TEST_CHECK(fs::remove_all(p, ec) == BadRet);
     74         TEST_CHECK(ec);
     75         TEST_CHECK(checkThrow(p, ec));
     76     }
     77 
     78     // PR#35780
     79     const path testCasesNonexistant[] = {
     80         "",
     81         env.make_env_path("dne")
     82     };
     83     for (auto &p : testCasesNonexistant) {
     84         std::error_code ec;
     85 
     86         TEST_CHECK(fs::remove_all(p, ec) == 0);
     87         TEST_CHECK(!ec);
     88     }
     89 }
     90 
     91 TEST_CASE(basic_remove_all_test)
     92 {
     93     scoped_test_env env;
     94     const path dne = env.make_env_path("dne");
     95     const path link = env.create_symlink(dne, "link");
     96     const path nested_link = env.make_env_path("nested_link");
     97     create_symlink(link, nested_link);
     98     const path testCases[] = {
     99         env.create_file("file", 42),
    100         env.create_dir("empty_dir"),
    101         nested_link,
    102         link
    103     };
    104     for (auto& p : testCases) {
    105         std::error_code ec = std::make_error_code(std::errc::address_in_use);
    106         TEST_CHECK(remove(p, ec));
    107         TEST_CHECK(!ec);
    108         TEST_CHECK(!exists(symlink_status(p)));
    109     }
    110 }
    111 
    112 TEST_CASE(symlink_to_dir)
    113 {
    114     scoped_test_env env;
    115     const path dir = env.create_dir("dir");
    116     const path file = env.create_file(dir / "file", 42);
    117     const path link = env.create_symlink(dir, "sym");
    118 
    119     {
    120         std::error_code ec = std::make_error_code(std::errc::address_in_use);
    121         TEST_CHECK(remove_all(link, ec) == 1);
    122         TEST_CHECK(!ec);
    123         TEST_CHECK(!exists(symlink_status(link)));
    124         TEST_CHECK(exists(dir));
    125         TEST_CHECK(exists(file));
    126     }
    127 }
    128 
    129 
    130 TEST_CASE(nested_dir)
    131 {
    132     scoped_test_env env;
    133     const path dir = env.create_dir("dir");
    134     const path dir1 = env.create_dir(dir / "dir1");
    135     const path out_of_dir_file = env.create_file("file1", 42);
    136     const path all_files[] = {
    137         dir, dir1,
    138         env.create_file(dir / "file1", 42),
    139         env.create_symlink(out_of_dir_file, dir / "sym1"),
    140         env.create_file(dir1 / "file2", 42),
    141         env.create_symlink(dir, dir1 / "sym2")
    142     };
    143     const std::size_t expected_count = sizeof(all_files) / sizeof(all_files[0]);
    144 
    145     std::error_code ec = std::make_error_code(std::errc::address_in_use);
    146     TEST_CHECK(remove_all(dir, ec) == expected_count);
    147     TEST_CHECK(!ec);
    148     for (auto const& p : all_files) {
    149         TEST_CHECK(!exists(symlink_status(p)));
    150     }
    151     TEST_CHECK(exists(out_of_dir_file));
    152 }
    153 
    154 TEST_SUITE_END()
    155