libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03
  10 // UNSUPPORTED: no-filesystem
  11 // UNSUPPORTED: availability-filesystem-missing
  12
  13 // <filesystem>
  14
  15 // class recursive_directory_iterator
  16
  17 // recursive_directory_iterator(recursive_directory_iterator&&) noexcept;
  18
  19 #include "filesystem_include.h"
  20 #include <type_traits>
  21 #include <set>
  22 #include <cassert>
  23
  24 #include "test_macros.h"
  25 #include "filesystem_test_helper.h"
  26
  27 using namespace fs;
  28
  29 static void test_constructor_signature()
  30 {
  31     using D = recursive_directory_iterator;
  32     static_assert(std::is_nothrow_move_constructible<D>::value, "");
  33 }
  34
  35 static void test_move_end_iterator()
  36 {
  37     const recursive_directory_iterator endIt;
  38     recursive_directory_iterator endIt2{};
  39
  40     recursive_directory_iterator it(std::move(endIt2));
  41     assert(it == endIt);
  42     assert(endIt2 == endIt);
  43 }
  44
  45 static void test_move_valid_iterator()
  46 {
  47     static_test_env static_env;
  48     const path testDir = static_env.Dir;
  49     const recursive_directory_iterator endIt{};
  50
  51     // build 'it' up with "interesting" non-default state so we can test
  52     // that it gets copied. We want to get 'it' into a state such that:
  53     //  it.options() != directory_options::none
  54     //  it.depth() != 0
  55     //  it.recursion_pending() != true
  56     const directory_options opts = directory_options::skip_permission_denied;
  57     recursive_directory_iterator it(testDir, opts);
  58     assert(it != endIt);
  59     while (it.depth() == 0) {
  60         ++it;
  61         assert(it != endIt);
  62     }
  63     it.disable_recursion_pending();
  64     assert(it.options() == opts);
  65     assert(it.depth() == 1);
  66     assert(it.recursion_pending() == false);
  67     const path entry = *it;
  68
  69     // OPERATION UNDER TEST //
  70     const recursive_directory_iterator it2(std::move(it));
  71     // ------------------- //
  72
  73     assert(it2 != endIt);
  74     assert(*it2 == entry);
  75     assert(it2.depth() == 1);
  76     assert(it2.recursion_pending() == false);
  77 }
  78
  79 int main(int, char**) {
  80     test_constructor_signature();
  81     test_move_end_iterator();
  82     test_move_valid_iterator();
  83
  84     return 0;
  85 }