| //===-- Unittests for read and write --------------------------------------===// |
| // |
| // 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/stdio/remove.h" |
| #include "src/unistd/close.h" |
| #include "src/unistd/fsync.h" |
| #include "src/unistd/read.h" |
| #include "src/unistd/write.h" |
| #include "test/UnitTest/ErrnoSetterMatcher.h" |
| #include "test/UnitTest/Test.h" |
| |
| #include <sys/stat.h> |
| |
| TEST(LlvmLibcUniStd, WriteAndReadBackTest) { |
| using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds; |
| constexpr const char *FILENAME = "__unistd_read_write.test"; |
| auto TEST_FILE = libc_make_test_file_path(FILENAME); |
| |
| int write_fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU); |
| ASSERT_ERRNO_SUCCESS(); |
| ASSERT_GT(write_fd, 0); |
| constexpr const char HELLO[] = "hello"; |
| constexpr int HELLO_SIZE = sizeof(HELLO); |
| ASSERT_THAT(LIBC_NAMESPACE::write(write_fd, HELLO, HELLO_SIZE), |
| Succeeds(HELLO_SIZE)); |
| ASSERT_THAT(LIBC_NAMESPACE::fsync(write_fd), Succeeds(0)); |
| ASSERT_THAT(LIBC_NAMESPACE::close(write_fd), Succeeds(0)); |
| |
| int read_fd = LIBC_NAMESPACE::open(TEST_FILE, O_RDONLY); |
| ASSERT_ERRNO_SUCCESS(); |
| ASSERT_GT(read_fd, 0); |
| char read_buf[10]; |
| ASSERT_THAT(LIBC_NAMESPACE::read(read_fd, read_buf, HELLO_SIZE), |
| Succeeds(HELLO_SIZE)); |
| EXPECT_STREQ(read_buf, HELLO); |
| ASSERT_THAT(LIBC_NAMESPACE::close(read_fd), Succeeds(0)); |
| |
| ASSERT_THAT(LIBC_NAMESPACE::remove(TEST_FILE), Succeeds(0)); |
| } |
| |
| TEST(LlvmLibcUniStd, WriteFails) { |
| using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; |
| |
| EXPECT_THAT(LIBC_NAMESPACE::write(-1, "", 1), Fails(EBADF)); |
| EXPECT_THAT(LIBC_NAMESPACE::write(1, reinterpret_cast<const void *>(-1), 1), |
| Fails(EFAULT)); |
| } |
| |
| TEST(LlvmLibcUniStd, ReadFails) { |
| using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails; |
| |
| EXPECT_THAT(LIBC_NAMESPACE::read(-1, nullptr, 1), Fails(EBADF)); |
| EXPECT_THAT(LIBC_NAMESPACE::read(0, reinterpret_cast<void *>(-1), 1), |
| Fails(EFAULT)); |
| } |