libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy.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_recursive_directory_iterator(recursive_recursive_directory_iterator const&);
  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_copy_constructible<D>::value, "");
  33     //static_assert(!std::is_nothrow_copy_constructible<D>::value, "");
  34 }
  35
  36 static void test_copy_end_iterator()
  37 {
  38     const recursive_directory_iterator endIt;
  39     recursive_directory_iterator it(endIt);
  40     assert(it == endIt);
  41 }
  42
  43 static void test_copy_valid_iterator()
  44 {
  45     static_test_env static_env;
  46     const path testDir = static_env.Dir;
  47     const recursive_directory_iterator endIt{};
  48
  49     // build 'it' up with "interesting" non-default state so we can test
  50     // that it gets copied. We want to get 'it' into a state such that:
  51     //  it.options() != directory_options::none
  52     //  it.depth() != 0
  53     //  it.recursion_pending() != true
  54     const directory_options opts = directory_options::skip_permission_denied;
  55     recursive_directory_iterator it(testDir, opts);
  56     assert(it != endIt);
  57     while (it.depth() == 0) {
  58         ++it;
  59         assert(it != endIt);
  60     }
  61     it.disable_recursion_pending();
  62     assert(it.options() == opts);
  63     assert(it.depth() == 1);
  64     assert(it.recursion_pending() == false);
  65     const path entry = *it;
  66
  67     // OPERATION UNDER TEST //
  68     const recursive_directory_iterator it2(it);
  69     // ------------------- //
  70
  71     assert(it2 == it);
  72     assert(*it2 == entry);
  73     assert(it2.depth() == 1);
  74     assert(it2.recursion_pending() == false);
  75     assert(it != endIt);
  76 }
  77
  78 int main(int, char**) {
  79     test_constructor_signature();
  80     test_copy_end_iterator();
  81     test_copy_valid_iterator();
  82
  83     return 0;
  84 }