#include <CuTest.h>
#include <ctype.h>

#include "rng.h"

static void test_rng_round(CuTest * tc)
{
    double f;
    int i, r;
    for (i = 0; i < 1000; ++i) {
        f = rng_double();
        r = RAND_ROUND(f);
        CuAssertTrue(tc, f >= 0);
        CuAssertTrue(tc, r <= (int)f + 1);
        CuAssertTrue(tc, r >= (int)f);
        CuAssertTrue(tc, r == (int)r);
        CuAssertTrue(tc, r == RAND_ROUND(r));
    }
}

CuSuite *get_rng_suite(void)
{
    CuSuite *suite = CuSuiteNew();
    SUITE_ADD_TEST(suite, test_rng_round);
    return suite;
}