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