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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 
18 using LlvmLibcChdirTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
19 
TEST_F(LlvmLibcChdirTest,ChangeAndOpen)20 TEST_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 
TEST_F(LlvmLibcChdirTest,ChangeToNonExistentDir)45 TEST_F(LlvmLibcChdirTest, ChangeToNonExistentDir) {
46   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
47   ASSERT_THAT(LIBC_NAMESPACE::chdir("non-existent-dir"), Fails(ENOENT));
48 }
49