58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#include <commonlib/rational.h>
|
|
#include <tests/test.h>
|
|
|
|
struct rational_test_param {
|
|
unsigned long num, den;
|
|
unsigned long max_num, max_den;
|
|
unsigned long exp_num, exp_den;
|
|
};
|
|
|
|
static const struct rational_test_param test_params[] = {
|
|
/* Exceeds bounds, semi-convergent term > half last term */
|
|
{ 1230, 10, 100, 20, 100, 1},
|
|
/* Exceeds bounds, semi-convergent term < half last term */
|
|
{ 34567, 100, 120, 20, 120, 1},
|
|
/* Closest to zero */
|
|
{ 1, 30, 100, 10, 0, 1},
|
|
/* Closest to smallest non-zero */
|
|
{ 1, 19, 100, 10, 1, 10},
|
|
/* Exact answer */
|
|
{ 1155, 7735, 255, 255, 33, 221},
|
|
/* Convergent */
|
|
{ 27, 32, 16, 16, 11, 13},
|
|
/* Convergent, semiconvergent term half convergent term */
|
|
{ 67, 54, 17, 18, 5, 4},
|
|
/* Semiconvergent, semiconvergent term half convergent term */
|
|
{ 453, 182, 60, 60, 57, 23},
|
|
/* Semiconvergent, numerator limit */
|
|
{ 87, 32, 70, 32, 68, 25},
|
|
/* Semiconvergent, demominator limit */
|
|
{ 14533, 4626, 15000, 2400, 7433, 2366},
|
|
};
|
|
|
|
static void test_rational(void **state)
|
|
{
|
|
int i;
|
|
unsigned long num = 0, den = 0;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(test_params); i++) {
|
|
rational_best_approximation(test_params[i].num, test_params[i].den,
|
|
test_params[i].max_num, test_params[i].max_den,
|
|
&num, &den);
|
|
assert_int_equal(num, test_params[i].exp_num);
|
|
assert_int_equal(den, test_params[i].exp_den);
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
const struct CMUnitTest tests[] = {
|
|
cmocka_unit_test(test_rational),
|
|
};
|
|
|
|
return cmocka_run_group_tests(tests, NULL, NULL);
|
|
}
|
|
|