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/fcntl/open.h"
10 #include "src/fcntl/openat.h"
11 #include "src/unistd/close.h"
12 #include "src/unistd/read.h"
13 #include "test/ErrnoSetterMatcher.h"
14 #include "utils/UnitTest/Test.h"
15 #include "utils/testutils/FDReader.h"
16
17 #include <errno.h>
18 #include <fcntl.h>
19
TEST(LlvmLibcUniStd,OpenAndReadTest)20 TEST(LlvmLibcUniStd, OpenAndReadTest) {
21 using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
22 constexpr const char *TEST_DIR = "testdata";
23 constexpr const char *TEST_FILE = "openat.test";
24 int dir_fd = __llvm_libc::open(TEST_DIR, O_DIRECTORY);
25 ASSERT_EQ(errno, 0);
26 ASSERT_GT(dir_fd, 0);
27 constexpr const char TEST_MSG[] = "openat test";
28 constexpr int TEST_MSG_SIZE = sizeof(TEST_MSG) - 1;
29
30 int read_fd = __llvm_libc::openat(dir_fd, TEST_FILE, O_RDONLY);
31 ASSERT_EQ(errno, 0);
32 ASSERT_GT(read_fd, 0);
33 char read_buf[TEST_MSG_SIZE];
34 ASSERT_THAT(__llvm_libc::read(read_fd, read_buf, TEST_MSG_SIZE),
35 Succeeds(TEST_MSG_SIZE));
36 ASSERT_THAT(__llvm_libc::close(read_fd), Succeeds(0));
37 ASSERT_THAT(__llvm_libc::close(dir_fd), Succeeds(0));
38 }
39
TEST(LlvmLibcUniStd,FailTest)40 TEST(LlvmLibcUniStd, FailTest) {
41 using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
42 EXPECT_THAT(__llvm_libc::openat(AT_FDCWD, "openat.test", O_RDONLY),
43 Fails(ENOENT));
44 }
45