1//===-- Unittests for chdir -----------------------------------------------===//
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#include "src/errno/libc_errno.h"
10#include "src/fcntl/open.h"
11#include "src/unistd/chdir.h"
12#include "src/unistd/close.h"
13#include "test/UnitTest/ErrnoSetterMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include <fcntl.h>
17
18TEST(LlvmLibcChdirTest, ChangeAndOpen) {
19 // The idea of this test is that we will first open an existing test file
20 // without changing the directory to make sure it exists. Next, we change
21 // directory and open the same file to make sure that the "chdir" operation
22 // succeeded.
23 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
24 constexpr const char *FILENAME = "testdata";
25 auto TEST_DIR = libc_make_test_file_path(FILENAME);
26 constexpr const char *FILENAME2 = "testdata/chdir.test";
27 auto TEST_FILE = libc_make_test_file_path(FILENAME2);
28 constexpr const char *FILENAME3 = "chdir.test";
29 auto TEST_FILE_BASE = libc_make_test_file_path(FILENAME3);
30 LIBC_NAMESPACE::libc_errno = 0;
31
32 int fd = LIBC_NAMESPACE::open(path: TEST_FILE, O_PATH);
33 ASSERT_GT(fd, 0);
34 ASSERT_ERRNO_SUCCESS();
35 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
36
37 ASSERT_THAT(LIBC_NAMESPACE::chdir(TEST_DIR), Succeeds(0));
38 fd = LIBC_NAMESPACE::open(path: TEST_FILE_BASE, O_PATH);
39 ASSERT_GT(fd, 0);
40 ASSERT_ERRNO_SUCCESS();
41 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
42}
43
44TEST(LlvmLibcChdirTest, ChangeToNonExistentDir) {
45 LIBC_NAMESPACE::libc_errno = 0;
46 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
47 ASSERT_THAT(LIBC_NAMESPACE::chdir("non-existent-dir"), Fails(ENOENT));
48 LIBC_NAMESPACE::libc_errno = 0;
49}
50

source code of libc/test/src/unistd/chdir_test.cpp