/** Unit tests for histogram
 *
 * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
 * @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
 * @license GNU General Public License (version 3)
 *
 * VILLASnode
 *
 * 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 3 of the License, or
 * 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, see <http://www.gnu.org/licenses/>.
 *********************************************************************************/

#include <criterion/criterion.h>

#include <villas/hist.h>
#include <villas/utils.h>

const double test_data[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

/* Histogram of test_data with 200 buckets between -100 and 100 */
const int hist_result[] = {};

Test(hist, simple) {
	struct hist h;
	int ret;

	ret = hist_init(&h, 0, 0);
	cr_assert_eq(ret, 0);

	for (int i = 0; i < ARRAY_LEN(test_data); i++)
		hist_put(&h, test_data[i]);

	cr_assert_float_eq(hist_mean(&h), 5.5, 1e-6);
	cr_assert_float_eq(hist_var(&h), 9.1666, 1e-3,);
	cr_assert_float_eq(hist_stddev(&h), 3.027650, 1e-6);

//	for (int i = 0; i < ARRAY_LEN(hist_result); i++)
//		cr_assert_eq()

	hist_destroy(&h);
}