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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// REQUIRES: can-create-symlinks
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: no-filesystem
// UNSUPPORTED: availability-filesystem-missing
// <filesystem>
// class recursive_directory_iterator
// recursive_directory_iterator& operator=(recursive_directory_iterator const&);
#include <filesystem>
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "filesystem_test_helper.h"
namespace fs = std::filesystem;
using namespace fs;
recursive_directory_iterator createInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::skip_permission_denied
// it.depth() == 1
// it.recursion_pending() == true
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::skip_permission_denied);
assert(it != endIt);
while (it.depth() != 1) {
++it;
assert(it != endIt);
}
assert(it.depth() == 1);
it.disable_recursion_pending();
return it;
}
recursive_directory_iterator createDifferentInterestingIterator(const static_test_env &static_env)
// Create an "interesting" iterator where all fields are
// in a non-default state. The returned 'it' is in a
// state such that:
// it.options() == directory_options::follow_directory_symlink
// it.depth() == 2
// it.recursion_pending() == false
{
const path testDir = static_env.Dir;
const recursive_directory_iterator endIt;
recursive_directory_iterator it(testDir,
directory_options::follow_directory_symlink);
assert(it != endIt);
while (it.depth() != 2) {
++it;
assert(it != endIt);
}
assert(it.depth() == 2);
return it;
}
static void test_assignment_signature() {
using D = recursive_directory_iterator;
static_assert(std::is_copy_assignable<D>::value, "");
}
static void test_copy_to_end_iterator()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
const recursive_directory_iterator from = createInterestingIterator(static_env);
const path entry = *from;
recursive_directory_iterator to;
to = from;
assert(to == from);
assert(*to == entry);
assert(to.options() == from.options());
assert(to.depth() == from.depth());
assert(to.recursion_pending() == from.recursion_pending());
}
static void test_copy_from_end_iterator()
{
static_test_env static_env;
const recursive_directory_iterator from;
recursive_directory_iterator to = createInterestingIterator(static_env);
to = from;
assert(to == from);
assert(to == recursive_directory_iterator{});
}
static void test_copy_valid_iterator()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
const recursive_directory_iterator it = createInterestingIterator(static_env);
const path entry = *it;
recursive_directory_iterator it2 = createDifferentInterestingIterator(static_env);
assert(it2 != it);
assert(it2.options() != it.options());
assert(it2.depth() != it.depth());
assert(it2.recursion_pending() != it.recursion_pending());
assert(*it2 != entry);
it2 = it;
assert(it2 == it);
assert(it2.options() == it.options());
assert(it2.depth() == it.depth());
assert(it2.recursion_pending() == it.recursion_pending());
assert(*it2 == entry);
}
static void test_returns_reference_to_self()
{
const recursive_directory_iterator it;
recursive_directory_iterator it2;
recursive_directory_iterator& ref = (it2 = it);
assert(&ref == &it2);
}
static void test_self_copy()
{
static_test_env static_env;
// Create two non-equal iterators that have exactly the same state.
recursive_directory_iterator it = createInterestingIterator(static_env);
recursive_directory_iterator it2 = createInterestingIterator(static_env);
assert(it != it2);
assert(it2.options() == it.options());
assert(it2.depth() == it.depth());
assert(it2.recursion_pending() == it.recursion_pending());
assert(*it2 == *it);
// perform a self-copy and check that the state still matches the
// other unmodified iterator.
recursive_directory_iterator const& cit = it;
it = cit;
assert(it2.options() == it.options());
assert(it2.depth() == it.depth());
assert(it2.recursion_pending() == it.recursion_pending());
assert(*it2 == *it);
}
int main(int, char**) {
test_assignment_signature();
test_copy_to_end_iterator();
test_copy_from_end_iterator();
test_copy_valid_iterator();
test_returns_reference_to_self();
test_self_copy();
return 0;
}
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