Spdk/test/unit/lib/reduce/reduce.c/reduce_ut.c

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#include "spdk/stdinc.h"

#include "spdk_cunit.h"

#include "reduce/reduce.c"
#include "common/lib/test_env.c"

static void
get_pm_file_size(void)
{
	struct spdk_reduce_vol_params params;
	int64_t pm_size, expected_pm_size;

	params.vol_size = 0;
	params.chunk_size = 0;
	params.backing_io_unit_size = 0;
	CU_ASSERT(spdk_reduce_get_pm_file_size(&params) == -EINVAL);

	/*
	 * Select a valid backing_io_unit_size.  This should still fail since
	 *  vol_size and chunk_size are still 0.
	 */
	params.backing_io_unit_size = 4096;
	CU_ASSERT(spdk_reduce_get_pm_file_size(&params) == -EINVAL);

	/*
	 * Select a valid chunk_size.  This should still fail since val_size
	 *  is still 0.
	 */
	params.chunk_size = 4096 * 4;
	CU_ASSERT(spdk_reduce_get_pm_file_size(&params) == -EINVAL);

	/* Select a valid vol_size.  This should return a proper pm_size. */
	params.vol_size = 4096 * 4 * 100;
	pm_size = spdk_reduce_get_pm_file_size(&params);
	expected_pm_size = sizeof(struct spdk_reduce_vol_superblock);
	/* 100 chunks in logical map * 8 bytes per chunk */
	expected_pm_size += 100 * sizeof(uint64_t);
	/* 100 chunks * 4 backing io units per chunk * 8 bytes per backing io unit */
	expected_pm_size += 100 * 4 * sizeof(uint64_t);
	/* reduce allocates some extra chunks too for in-flight writes when logical map
	 * is full.  REDUCE_EXTRA_CHUNKS is a private #ifdef in reduce.c.
	 */
	expected_pm_size += REDUCE_NUM_EXTRA_CHUNKS * 4 * sizeof(uint64_t);
	/* reduce will add some padding so numbers may not match exactly.  Make sure
	 * they are close though.
	 */
	CU_ASSERT((pm_size - expected_pm_size) < REDUCE_PM_SIZE_ALIGNMENT);
}

static void
get_backing_device_size(void)
{
	struct spdk_reduce_vol_params params;
	int64_t backing_size, expected_backing_size;

	params.vol_size = 0;
	params.chunk_size = 0;
	params.backing_io_unit_size = 0;
	CU_ASSERT(spdk_reduce_get_backing_device_size(&params) == -EINVAL);

	/*
	 * Select a valid backing_io_unit_size.  This should still fail since
	 *  vol_size and chunk_size are still 0.
	 */
	params.backing_io_unit_size = 4096;
	CU_ASSERT(spdk_reduce_get_backing_device_size(&params) == -EINVAL);

	/*
	 * Select a valid chunk_size.  This should still fail since val_size
	 *  is still 0.
	 */
	params.chunk_size = 4096 * 4;
	CU_ASSERT(spdk_reduce_get_backing_device_size(&params) == -EINVAL);

	/* Select a valid vol_size.  This should return a proper backing device size. */
	params.vol_size = 4096 * 4 * 100;
	backing_size = spdk_reduce_get_backing_device_size(&params);
	expected_backing_size = params.vol_size;
	/* reduce allocates some extra chunks too for in-flight writes when logical map
	 * is full.  REDUCE_EXTRA_CHUNKS is a private #ifdef in reduce.c.  Backing device
	 * must have space allocated for these extra chunks.
	 */
	expected_backing_size += REDUCE_NUM_EXTRA_CHUNKS * params.chunk_size;
	/* Account for superblock as well. */
	expected_backing_size += sizeof(struct spdk_reduce_vol_superblock);
	CU_ASSERT(backing_size == expected_backing_size);
}

int
main(int argc, char **argv)
{
	CU_pSuite	suite = NULL;
	unsigned int	num_failures;

	if (CU_initialize_registry() != CUE_SUCCESS) {
		return CU_get_error();
	}

	suite = CU_add_suite("reduce", NULL, NULL);
	if (suite == NULL) {
		CU_cleanup_registry();
		return CU_get_error();
	}

	if (
		CU_add_test(suite, "get_pm_file_size", get_pm_file_size) == NULL ||
		CU_add_test(suite, "get_backing_device_size", get_backing_device_size) == NULL
	) {
		CU_cleanup_registry();
		return CU_get_error();
	}

	CU_basic_set_mode(CU_BRM_VERBOSE);
	CU_basic_run_tests();
	num_failures = CU_get_number_of_failures();
	CU_cleanup_registry();
	return num_failures;
}