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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/errno/libc_errno.h"
#include "src/fcntl/open.h"
#include "src/unistd/close.h"
#include "src/unistd/symlink.h"
#include "src/unistd/unlink.h"
#include "test/UnitTest/ErrnoSetterMatcher.h"
#include "test/UnitTest/Test.h"
TEST(LlvmLibcSymlinkTest, CreateAndUnlink) {
using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
constexpr const char *TEST_FILE_BASE = "symlink.test";
constexpr const char *TEST_FILE = "testdata/symlink.test";
constexpr const char *TEST_FILE_LINK = "testdata/symlink.test.symlink";
// 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.
libc_errno = 0;
int write_fd = __llvm_libc::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
ASSERT_EQ(libc_errno, 0);
ASSERT_GT(write_fd, 0);
ASSERT_THAT(__llvm_libc::close(write_fd), Succeeds(0));
ASSERT_THAT(__llvm_libc::symlink(TEST_FILE_BASE, TEST_FILE_LINK),
Succeeds(0));
int symlink_fd = __llvm_libc::open(TEST_FILE_LINK, O_PATH);
ASSERT_GT(symlink_fd, 0);
ASSERT_EQ(libc_errno, 0);
ASSERT_THAT(__llvm_libc::close(symlink_fd), Succeeds(0));
ASSERT_THAT(__llvm_libc::unlink(TEST_FILE), Succeeds(0));
ASSERT_THAT(__llvm_libc::unlink(TEST_FILE_LINK), Succeeds(0));
}
TEST(LlvmLibcSymlinkTest, SymlinkInNonExistentPath) {
using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
ASSERT_THAT(__llvm_libc::symlink("non-existent-dir/non-existent-file",
"non-existent-dir/bad-symlink"),
Fails(ENOENT));
}
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