//===-- Unittests for functions from POSIX dirent.h -----------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "src/__support/CPP/string_view.h"
#include "src/dirent/closedir.h"
#include "src/dirent/dirfd.h"
#include "src/dirent/opendir.h"
#include "src/dirent/readdir.h"
#include "src/errno/libc_errno.h"
#include "test/UnitTest/Test.h"
#include <dirent.h>
using string_view = LIBC_NAMESPACE::cpp::string_view;
TEST(LlvmLibcDirentTest, SimpleOpenAndRead) {
::DIR *dir = LIBC_NAMESPACE::opendir("testdata");
ASSERT_TRUE(dir != nullptr);
// The file descriptors 0, 1 and 2 are reserved for standard streams.
// So, the file descriptor for the newly opened directory should be
// greater than 2.
ASSERT_GT(LIBC_NAMESPACE::dirfd(dir), 2);
struct ::dirent *file1 = nullptr, *file2 = nullptr, *dir1 = nullptr,
*dir2 = nullptr;
while (true) {
struct ::dirent *d = LIBC_NAMESPACE::readdir(dir);
if (d == nullptr)
break;
if (string_view(&d->d_name[0]) == "file1.txt")
file1 = d;
if (string_view(&d->d_name[0]) == "file2.txt")
file2 = d;
if (string_view(&d->d_name[0]) == "dir1")
dir1 = d;
if (string_view(&d->d_name[0]) == "dir2")
dir2 = d;
}
// Verify that we don't break out of the above loop in error.
ASSERT_ERRNO_SUCCESS();
ASSERT_TRUE(file1 != nullptr);
ASSERT_TRUE(file2 != nullptr);
ASSERT_TRUE(dir1 != nullptr);
ASSERT_TRUE(dir2 != nullptr);
ASSERT_EQ(LIBC_NAMESPACE::closedir(dir), 0);
}
TEST(LlvmLibcDirentTest, OpenNonExistentDir) {
LIBC_NAMESPACE::libc_errno = 0;
::DIR *dir = LIBC_NAMESPACE::opendir("___xyz123__.non_existent__");
ASSERT_TRUE(dir == nullptr);
ASSERT_ERRNO_EQ(ENOENT);
LIBC_NAMESPACE::libc_errno = 0;
}
TEST(LlvmLibcDirentTest, OpenFile) {
LIBC_NAMESPACE::libc_errno = 0;
::DIR *dir = LIBC_NAMESPACE::opendir("testdata/file1.txt");
ASSERT_TRUE(dir == nullptr);
ASSERT_ERRNO_EQ(ENOTDIR);
LIBC_NAMESPACE::libc_errno = 0;
}