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//===-- Unittests for symlink ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/fcntl/open.h"
#include "src/unistd/close.h"
#include "src/unistd/symlink.h"
#include "src/unistd/unlink.h"
#include "test/UnitTest/ErrnoCheckingTest.h"
#include "test/UnitTest/ErrnoSetterMatcher.h"
#include "test/UnitTest/Test.h"
#include <sys/stat.h>
using LlvmLibcSymlinkTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
TEST_F(LlvmLibcSymlinkTest, CreateAndUnlink) {
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
constexpr const char *FILENAME = "symlink.test";
auto TEST_FILE_BASE = libc_make_test_file_path(FILENAME);
constexpr const char *FILENAME2 = "symlink.test";
auto TEST_FILE = libc_make_test_file_path(FILENAME2);
constexpr const char *FILENAME3 = "symlink.test.symlink";
auto TEST_FILE_LINK = libc_make_test_file_path(FILENAME3);
// The test strategy is as follows:
// 1. Create a normal file
// 2. Create a symlink to that file.
// 3. Open the symlink to check that the symlink was created.
// 4. Cleanup the file and its symlink.
int write_fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
ASSERT_ERRNO_SUCCESS();
ASSERT_GT(write_fd, 0);
ASSERT_THAT(LIBC_NAMESPACE::close(write_fd), Succeeds(0));
ASSERT_THAT(LIBC_NAMESPACE::symlink(TEST_FILE_BASE, TEST_FILE_LINK),
Succeeds(0));
int symlink_fd = LIBC_NAMESPACE::open(TEST_FILE_LINK, O_PATH);
ASSERT_GT(symlink_fd, 0);
ASSERT_ERRNO_SUCCESS();
ASSERT_THAT(LIBC_NAMESPACE::close(symlink_fd), Succeeds(0));
ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE_LINK), Succeeds(0));
}
TEST_F(LlvmLibcSymlinkTest, SymlinkInNonExistentPath) {
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
ASSERT_THAT(LIBC_NAMESPACE::symlink("non-existent-dir/non-existent-file",
"non-existent-dir/bad-symlink"),
Fails(ENOENT));
}
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