1//===-- Unittests for fstat -----------------------------------------------===//
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/fcntl/open.h"
10#include "src/sys/stat/fstat.h"
11#include "src/unistd/close.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 "hdr/fcntl_macros.h"
18#include <sys/stat.h>
19
20using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;
21using LlvmLibcFStatTest = LIBC_NAMESPACE::testing::ErrnoCheckingTest;
22
23TEST_F(LlvmLibcFStatTest, CreatAndReadMode) {
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/fstat.test";
29
30 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_CREAT | O_WRONLY, S_IRWXU);
31 ASSERT_GT(fd, 0);
32 ASSERT_ERRNO_SUCCESS();
33
34 struct stat statbuf;
35 ASSERT_THAT(LIBC_NAMESPACE::fstat(fd, &statbuf), Succeeds(0));
36
37 ASSERT_EQ(int(statbuf.st_mode), int(S_IRWXU | S_IFREG));
38
39 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
40 ASSERT_THAT(LIBC_NAMESPACE::unlink(TEST_FILE), Succeeds(0));
41}
42
43TEST_F(LlvmLibcFStatTest, NonExistentFile) {
44 struct stat statbuf;
45 ASSERT_THAT(LIBC_NAMESPACE::fstat(-1, &statbuf), Fails(EBADF));
46}
47

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