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

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