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Diffstat (limited to 'src/tests/iobuf_test.c')
| -rw-r--r-- | src/tests/iobuf_test.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/tests/iobuf_test.c b/src/tests/iobuf_test.c new file mode 100644 index 000000000..a417c2e8c --- /dev/null +++ b/src/tests/iobuf_test.c @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2016 Michael Brown <mbrown@fensystems.co.uk>. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +/** @file + * + * I/O buffer tests + * + */ + +/* Forcibly enable assertions */ +#undef NDEBUG + +#include <stdint.h> +#include <string.h> +#include <assert.h> +#include <ipxe/iobuf.h> +#include <ipxe/io.h> +#include <ipxe/test.h> + +/* Forward declaration */ +struct self_test iobuf_test __self_test; + +/** + * Report I/O buffer allocation test result + * + * @v len Required length of buffer + * @v align Physical alignment + * @v offset Offset from physical alignment + * @v file Test code file + * @v line Test code line + */ +static inline void alloc_iob_okx ( size_t len, size_t align, size_t offset, + const char *file, unsigned int line ) { + struct io_buffer *iobuf; + + /* Allocate I/O buffer */ + iobuf = alloc_iob_raw ( len, align, offset ); + okx ( iobuf != NULL, file, line ); + DBGC ( &iobuf_test, "IOBUF %p (%#08lx+%#zx) for %#zx align %#zx " + "offset %#zx\n", iobuf, virt_to_phys ( iobuf->data ), + iob_tailroom ( iobuf ), len, align, offset ); + + /* Validate requested length and alignment */ + okx ( ( ( ( intptr_t ) iobuf ) & ( __alignof__ ( *iobuf ) - 1 ) ) == 0, + file, line ); + okx ( iob_tailroom ( iobuf ) >= len, file, line ); + okx ( ( ( align == 0 ) || + ( ( virt_to_phys ( iobuf->data ) & ( align - 1 ) ) == + ( offset & ( align - 1 ) ) ) ), file, line ); + + /* Overwrite entire content of I/O buffer (for Valgrind) */ + memset ( iob_put ( iobuf, len ), 0x55, len ); + + /* Free I/O buffer */ + free_iob ( iobuf ); +} +#define alloc_iob_ok( len, align, offset ) \ + alloc_iob_okx ( len, align, offset, __FILE__, __LINE__ ) + +/** + * Report I/O buffer allocation failure test result + * + * @v len Required length of buffer + * @v align Physical alignment + * @v offset Offset from physical alignment + * @v file Test code file + * @v line Test code line + */ +static inline void alloc_iob_fail_okx ( size_t len, size_t align, size_t offset, + const char *file, unsigned int line ) { + struct io_buffer *iobuf; + + /* Allocate I/O buffer */ + iobuf = alloc_iob_raw ( len, align, offset ); + okx ( iobuf == NULL, file, line ); +} +#define alloc_iob_fail_ok( len, align, offset ) \ + alloc_iob_fail_okx ( len, align, offset, __FILE__, __LINE__ ) + +/** + * Perform I/O buffer self-tests + * + */ +static void iobuf_test_exec ( void ) { + + /* Check zero-length allocations */ + alloc_iob_ok ( 0, 0, 0 ); + alloc_iob_ok ( 0, 0, 1 ); + alloc_iob_ok ( 0, 1, 0 ); + alloc_iob_ok ( 0, 1024, 0 ); + alloc_iob_ok ( 0, 139, -17 ); + + /* Check various sensible allocations */ + alloc_iob_ok ( 1, 0, 0 ); + alloc_iob_ok ( 16, 16, 0 ); + alloc_iob_ok ( 64, 0, 0 ); + alloc_iob_ok ( 65, 0, 0 ); + alloc_iob_ok ( 65, 1024, 19 ); + alloc_iob_ok ( 1536, 1536, 0 ); + alloc_iob_ok ( 2048, 2048, 0 ); + alloc_iob_ok ( 2048, 2048, -10 ); + + /* Excessively large or excessively aligned allocations should fail */ + alloc_iob_fail_ok ( -1UL, 0, 0 ); + alloc_iob_fail_ok ( -1UL, 1024, 0 ); + alloc_iob_fail_ok ( 0, -1UL, 0 ); + alloc_iob_fail_ok ( 1024, -1UL, 0 ); +} + +/** I/O buffer self-test */ +struct self_test iobuf_test __self_test = { + .name = "iobuf", + .exec = iobuf_test_exec, +}; |