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unit-test/io_engine_t: add a little test for bcache_{read,write}_bytes

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This commit is contained in:
Joe Thornber 2018-05-01 10:47:40 +01:00
parent f6459757af
commit 7aba7fe68b
2 changed files with 70 additions and 15 deletions
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1
test/unit/bcache_t.c
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@ -821,6 +821,7 @@ static void test_invalidate_held_block(void *context)
bcache_put(b);
}
/*----------------------------------------------------------------
* Top level
*--------------------------------------------------------------*/

84
test/unit/io_engine_t.c
View File

@ -29,7 +29,8 @@
//----------------------------------------------------------------
#define SECTOR_SIZE 512
#define BLOCK_SIZE_SECTORS 64
#define BLOCK_SIZE_SECTORS 8
#define NR_BLOCKS 64
struct fixture {
struct io_engine *e;
@ -39,10 +40,46 @@ struct fixture {
int fd;
};
static void _fill_buffer(uint8_t *buffer, uint8_t seed, size_t count)
{
unsigned i;
uint8_t b = seed;
for (i = 0; i < count; i++) {
buffer[i] = b;
b = ((b << 5) + b) + i;
}
}
static void _check_buffer(uint8_t *buffer, uint8_t seed, size_t count)
{
unsigned i;
uint8_t b = seed;
for (i = 0; i < count; i++) {
T_ASSERT_EQUAL(buffer[i], b);
b = ((b << 5) + b) + i;
}
}
static void _print_buffer(const char *name, uint8_t *buffer, size_t count)
{
unsigned col;
fprintf(stderr, "%s:\n", name);
while (count) {
for (col = 0; count && col < 20; col++) {
fprintf(stderr, "%x, ", (unsigned) *buffer);
col++;
buffer++;
count--;
}
fprintf(stderr, "\n");
}
}
static void *_fix_init(void)
{
uint8_t b = 123;
unsigned i;
struct fixture *f = malloc(sizeof(*f));
T_ASSERT(f);
@ -55,10 +92,7 @@ static void *_fix_init(void)
f->fd = mkostemp(f->fname, O_RDWR | O_CREAT | O_EXCL);
T_ASSERT(f->fd >= 0);
for (i = 0; i < SECTOR_SIZE * BLOCK_SIZE_SECTORS; i++) {
f->data[i] = b;
b = ((b << 5) + b) + i;
}
_fill_buffer(f->data, 123, sizeof(f->data));
write(f->fd, f->data, SECTOR_SIZE * BLOCK_SIZE_SECTORS);
lseek(f->fd, 0, SEEK_SET);
@ -72,7 +106,8 @@ static void _fix_exit(void *fixture)
close(f->fd);
unlink(f->fname);
free(f->data);
f->e->destroy(f->e);
if (f->e)
f->e->destroy(f->e);
free(f);
}
@ -103,8 +138,6 @@ static void _test_read(void *fixture)
{
struct fixture *f = fixture;
uint8_t b = 123;
unsigned i;
struct io io;
_io_init(&io);
@ -112,11 +145,8 @@ static void _test_read(void *fixture)
T_ASSERT(f->e->wait(f->e, _complete_io));
T_ASSERT(io.completed);
T_ASSERT(!io.error);
for (i = 0; i < SECTOR_SIZE * BLOCK_SIZE_SECTORS; i++) {
T_ASSERT_EQUAL(f->data[i], b);
b = ((b << 5) + b) + i;
}
_check_buffer(f->data, 123, sizeof(f->data));
}
static void _test_write(void *fixture)
@ -132,6 +162,29 @@ static void _test_write(void *fixture)
T_ASSERT(!io.error);
}
static void _test_write_bytes(void *fixture)
{
struct fixture *f = fixture;
unsigned offset = 345;
char buf_out[32];
char buf_in[32];
struct bcache *cache = bcache_create(8, BLOCK_SIZE_SECTORS, f->e);
T_ASSERT(cache);
// T_ASSERT(bcache_read_bytes(cache, f->fd, offset, sizeof(buf_in), buf_in));
_fill_buffer((uint8_t *) buf_out, 234, sizeof(buf_out));
T_ASSERT(bcache_write_bytes(cache, f->fd, offset, sizeof(buf_out), buf_out));
T_ASSERT(bcache_read_bytes(cache, f->fd, offset, sizeof(buf_in), buf_in));
_print_buffer("buf_out", (uint8_t *) buf_out, sizeof(buf_out));
_print_buffer("buf_in", (uint8_t *) buf_in, sizeof(buf_in));
T_ASSERT(!memcmp(buf_out, buf_in, sizeof(buf_out)));
bcache_destroy(cache);
f->e = NULL; // already destroyed
}
//----------------------------------------------------------------
#define T(path, desc, fn) register_test(ts, "/base/device/bcache/io-engine/" path, desc, fn)
@ -147,6 +200,7 @@ static struct test_suite *_tests(void)
T("create-destroy", "simple create/destroy", _test_create);
T("create-read", "read sanity check", _test_read);
T("create-write", "write sanity check", _test_write);
T("bcache-write-bytes", "test the utility fns", _test_write_bytes);
return ts;
}