1//===-- Unittests for lstat -----------------------------------------------===//
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/sys/stat/lstat.h"
12#include "src/unistd/close.h"
13#include "src/unistd/unlink.h"
14#include "test/UnitTest/ErrnoSetterMatcher.h"
15#include "test/UnitTest/Test.h"
16
17#include <fcntl.h>
18#include <sys/stat.h>
19
20TEST(LlvmLibcLStatTest, CreatAndReadMode) {
21 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
22 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
23
24 // The test file is initially writable. We open it for writing and ensure
25 // that it indeed can be opened for writing. Next, we close the file and
26 // make it readonly using chmod. We test that chmod actually succeeded by
27 // trying to open the file for writing and failing.
28 constexpr const char *TEST_FILE = "testdata/lstat.test";
29 LIBC_NAMESPACE::libc_errno = 0;
30
31 int fd = LIBC_NAMESPACE::open(path: TEST_FILE, O_CREAT | O_WRONLY, S_IRWXU);
32 ASSERT_GT(fd, 0);
33 ASSERT_ERRNO_SUCCESS();
34 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
35
36 struct stat statbuf;
37 ASSERT_THAT(LIBC_NAMESPACE::lstat(TEST_FILE, &statbuf), Succeeds(0));
38
39 ASSERT_EQ(int(statbuf.st_mode), int(S_IRWXU | S_IFREG));
40
41 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
42}
43
44TEST(LlvmLibcLStatTest, NonExistentFile) {
45 LIBC_NAMESPACE::libc_errno = 0;
46 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
47 struct stat statbuf;
48 ASSERT_THAT(LIBC_NAMESPACE::lstat("non-existent-file", &statbuf),
49 Fails(ENOENT));
50 LIBC_NAMESPACE::libc_errno = 0;
51}
52

source code of libc/test/src/sys/stat/lstat_test.cpp