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tests: kernel: add test for k_realloc

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add test for k_realloc.

Co-authored-by: Yong Cong Sin <ycsin@meta.com>
Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>
This commit is contained in:
Fin Maaß 2024-05-13 09:47:36 +02:00 • committed by Alberto Escolar
commit cd0c67f35a
1 changed files with 61 additions and 0 deletions
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61
tests/lib/multi_heap/src/test_mheap_api.c
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@ -101,6 +101,67 @@ ZTEST(mheap_api, test_mheap_malloc_free)
zassert_is_null(block_fail, NULL); zassert_is_null(block_fail, NULL);
} }
ZTEST(mheap_api, test_mheap_realloc)
{
void *block1, *block2;
size_t nb;
/* Realloc NULL pointer is equivalent to malloc() */
block1 = k_realloc(NULL, BLK_SIZE_MIN);
zassert_not_null(block1);
/* Allocate something larger than the heap */
block2 = k_realloc(NULL, OVERFLOW_SIZE);
/* Should fail and return NULL */
zassert_is_null(block2);
/* Keep making the allocated buffer bigger until the heap is depleted */
for (nb = 2; nb < (2 * BLK_NUM_MAX); nb++) {
void *last_block1 = block1;
block1 = k_realloc(block1, nb * BLK_SIZE_MIN);
if (block1 == NULL) {
block1 = last_block1;
break;
}
}
/* Allocate buffer2 when the heap has been depleted */
block2 = k_realloc(NULL, BLK_SIZE_MIN);
/* Should fail and return NULL */
zassert_is_null(block2);
/* Now, make block1 smaller */
block1 = k_realloc(block1, BLK_SIZE_MIN);
zassert_not_null(block1);
/* Try to allocate buffer2 again */
block2 = k_realloc(NULL, BLK_SIZE_MIN);
/* Should pass this time */
zassert_not_null(block2);
/* Deallocate everything */
k_free(block1);
/* equivalent to k_free() */
block2 = k_realloc(block2, 0);
/* Return NULL after freed */
zassert_is_null(block2);
/* After all allocated buffers have been freed, make sure that we are able to allocate as
* many again
*/
block1 = k_malloc(BLK_SIZE_MIN);
zassert_not_null(block1);
for (size_t i = 1; i < nb; i++) {
block1 = k_realloc(block1, i * BLK_SIZE_MIN);
zassert_not_null(block1);
}
/* Free block1 with k_realloc() this time */
block1 = k_realloc(block1, 0);
zassert_is_null(block1);
}
/** /**
* @brief Test to demonstrate k_calloc() API functionality. * @brief Test to demonstrate k_calloc() API functionality.
* *