| //===-- Unittests for f operations like fopen, flcose etc --------------===// |
| // |
| // 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/stdio/clearerr_unlocked.h" |
| #include "src/stdio/fclose.h" |
| #include "src/stdio/feof_unlocked.h" |
| #include "src/stdio/ferror_unlocked.h" |
| #include "src/stdio/flockfile.h" |
| #include "src/stdio/fopen.h" |
| #include "src/stdio/fread_unlocked.h" |
| #include "src/stdio/funlockfile.h" |
| #include "src/stdio/fwrite_unlocked.h" |
| #include "test/UnitTest/Test.h" |
| |
| #include "src/errno/libc_errno.h" |
| #include <stdio.h> |
| |
| TEST(LlvmLibcFILETest, UnlockedReadAndWrite) { |
| constexpr char fNAME[] = "testdata/unlocked_read_and_write.test"; |
| ::FILE *f = LIBC_NAMESPACE::fopen(fNAME, "w"); |
| ASSERT_FALSE(f == nullptr); |
| constexpr char CONTENT[] = "1234567890987654321"; |
| LIBC_NAMESPACE::flockfile(f); |
| ASSERT_EQ(sizeof(CONTENT) - 1, LIBC_NAMESPACE::fwrite_unlocked( |
| CONTENT, 1, sizeof(CONTENT) - 1, f)); |
| // Should be an error to read. |
| constexpr size_t READ_SIZE = 5; |
| char data[READ_SIZE * 2 + 1]; |
| data[READ_SIZE * 2] = '\0'; |
| |
| ASSERT_EQ(size_t(0), |
| LIBC_NAMESPACE::fread_unlocked(data, 1, sizeof(READ_SIZE), f)); |
| ASSERT_NE(LIBC_NAMESPACE::ferror_unlocked(f), 0); |
| ASSERT_ERRNO_FAILURE(); |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| LIBC_NAMESPACE::clearerr_unlocked(f); |
| ASSERT_EQ(LIBC_NAMESPACE::ferror_unlocked(f), 0); |
| |
| LIBC_NAMESPACE::funlockfile(f); |
| ASSERT_EQ(0, LIBC_NAMESPACE::fclose(f)); |
| |
| f = LIBC_NAMESPACE::fopen(fNAME, "r"); |
| ASSERT_FALSE(f == nullptr); |
| |
| LIBC_NAMESPACE::flockfile(f); |
| ASSERT_EQ(LIBC_NAMESPACE::fread_unlocked(data, 1, READ_SIZE, f), READ_SIZE); |
| ASSERT_EQ(LIBC_NAMESPACE::fread_unlocked(data + READ_SIZE, 1, READ_SIZE, f), |
| READ_SIZE); |
| |
| // Should be an error to write. |
| ASSERT_EQ(size_t(0), |
| LIBC_NAMESPACE::fwrite_unlocked(CONTENT, 1, sizeof(CONTENT), f)); |
| ASSERT_NE(LIBC_NAMESPACE::ferror_unlocked(f), 0); |
| ASSERT_ERRNO_FAILURE(); |
| LIBC_NAMESPACE::libc_errno = 0; |
| |
| LIBC_NAMESPACE::clearerr_unlocked(f); |
| ASSERT_EQ(LIBC_NAMESPACE::ferror_unlocked(f), 0); |
| |
| // Reading more should trigger eof. |
| char large_data[sizeof(CONTENT)]; |
| ASSERT_NE(sizeof(CONTENT), |
| LIBC_NAMESPACE::fread_unlocked(large_data, 1, sizeof(CONTENT), f)); |
| ASSERT_NE(LIBC_NAMESPACE::feof_unlocked(f), 0); |
| |
| LIBC_NAMESPACE::funlockfile(f); |
| ASSERT_STREQ(data, "1234567890"); |
| |
| ASSERT_EQ(LIBC_NAMESPACE::fclose(f), 0); |
| } |