58 lines · cpp
1//===-- Unittests for symlink ---------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/fcntl/open.h"10#include "src/unistd/close.h"11#include "src/unistd/symlink.h"12#include "src/unistd/unlink.h"13#include "test/UnitTest/ErrnoCheckingTest.h"14#include "test/UnitTest/ErrnoSetterMatcher.h"15#include "test/UnitTest/Test.h"16 17#include <sys/stat.h>18 19using LlvmLibcSymlinkTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;20 21TEST_F(LlvmLibcSymlinkTest, CreateAndUnlink) {22 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;23 constexpr const char *FILENAME = "symlink.test";24 auto TEST_FILE_BASE = libc_make_test_file_path(FILENAME);25 constexpr const char *FILENAME2 = "symlink.test";26 auto TEST_FILE = libc_make_test_file_path(FILENAME2);27 constexpr const char *FILENAME3 = "symlink.test.symlink";28 auto TEST_FILE_LINK = libc_make_test_file_path(FILENAME3);29 30 // The test strategy is as follows:31 // 1. Create a normal file32 // 2. Create a symlink to that file.33 // 3. Open the symlink to check that the symlink was created.34 // 4. Cleanup the file and its symlink.35 int write_fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);36 ASSERT_ERRNO_SUCCESS();37 ASSERT_GT(write_fd, 0);38 ASSERT_THAT(LIBC_NAMESPACE::close(write_fd), Succeeds(0));39 40 ASSERT_THAT(LIBC_NAMESPACE::symlink(TEST_FILE_BASE, TEST_FILE_LINK),41 Succeeds(0));42 43 int symlink_fd = LIBC_NAMESPACE::open(TEST_FILE_LINK, O_PATH);44 ASSERT_GT(symlink_fd, 0);45 ASSERT_ERRNO_SUCCESS();46 ASSERT_THAT(LIBC_NAMESPACE::close(symlink_fd), Succeeds(0));47 48 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));49 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_LINK), Succeeds(0));50}51 52TEST_F(LlvmLibcSymlinkTest, SymlinkInNonExistentPath) {53 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;54 ASSERT_THAT(LIBC_NAMESPACE::symlink("non-existent-dir/non-existent-file",55 "non-existent-dir/bad-symlink"),56 Fails(ENOENT));57}58