1//===-- Unittests for openat ----------------------------------------------===//
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/fcntl/openat.h"
12#include "src/unistd/close.h"
13#include "src/unistd/read.h"
14#include "test/UnitTest/ErrnoSetterMatcher.h"
15#include "test/UnitTest/Test.h"
16
17#include <fcntl.h>
18
19TEST(LlvmLibcUniStd, OpenAndReadTest) {
20 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
21 constexpr const char *TEST_DIR = "testdata";
22 constexpr const char *TEST_FILE = "openat.test";
23 int dir_fd = LIBC_NAMESPACE::open(path: TEST_DIR, O_DIRECTORY);
24 ASSERT_ERRNO_SUCCESS();
25 ASSERT_GT(dir_fd, 0);
26 constexpr const char TEST_MSG[] = "openat test";
27 constexpr int TEST_MSG_SIZE = sizeof(TEST_MSG) - 1;
28
29 int read_fd = LIBC_NAMESPACE::openat(dfd: dir_fd, path: TEST_FILE, O_RDONLY);
30 ASSERT_ERRNO_SUCCESS();
31 ASSERT_GT(read_fd, 0);
32 char read_buf[TEST_MSG_SIZE];
33 ASSERT_THAT(LIBC_NAMESPACE::read(read_fd, read_buf, TEST_MSG_SIZE),
34 Succeeds(TEST_MSG_SIZE));
35 ASSERT_THAT(LIBC_NAMESPACE::close(read_fd), Succeeds(0));
36 ASSERT_THAT(LIBC_NAMESPACE::close(dir_fd), Succeeds(0));
37}
38
39TEST(LlvmLibcUniStd, FailTest) {
40 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
41 EXPECT_THAT(LIBC_NAMESPACE::openat(AT_FDCWD, "openat.test", O_RDONLY),
42 Fails(ENOENT));
43}
44

source code of libc/test/src/fcntl/openat_test.cpp