source/tests/secure_random.test.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

#include "../kit/secure_random.h"
#include <string.h>

#define KIT_TEST_FILE secure_random
#include "../kit/test.h"

TEST("secure random") {
  int v[20];
  memset(v, 0, sizeof v);

  REQUIRE_EQ(secure_random(40, v), KIT_OK);
  REQUIRE_EQ(secure_random(40, v + 10), KIT_OK);

  int repeats = 0;

  for (int i = 1; i < sizeof v / sizeof *v; i++)
    for (int j = 0; j < i; j++)
      if (v[i] == v[j])
        repeats++;

  REQUIRE_EQ(repeats, 0);
}

#undef KIT_TEST_FILE