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#include "../src/random.c"
#include "../src/testing.h"
static int
test_urandom_bytes(void) {
int rc = -1;
test_start("urandom_bytes()");
{
testing("we get to pick the size that comes out");
const size_t LEN = 256;
uint8_t arr[256 /* LEN */] = { 0 };
for (size_t n = 0; n < LEN; n++) {
if (urandom_bytes(n, &arr)) {
logerr("urandom_bytes(n, &arr);\n");
goto out;
}
for (size_t i = n; i < LEN; i++) {
assert(arr[i] == 0);
}
}
test_ok();
}
{
testing("we always get a new value as a result");
const size_t LEN = 64;
uint8_t arr1[64 /* LEN */] = { 0 };
uint8_t arr2[64 /* LEN */] = { 0 };
if (urandom_bytes(LEN, &arr1)) {
logerr("urandom_bytes(LEN, &arr1);\n");
goto out;
}
const size_t attempts = 10;
for (size_t n = 0; n < attempts; n++) {
if (urandom_bytes(LEN, &arr2)) {
logerr("urandom_bytes(LEN, &arr2);\n");
goto out;
}
assert(memcmp(arr1, arr2, LEN) != 0);
}
test_ok();
}
rc = 0;
out:
return rc;
}
int
main(void) {
int rc = -1;
if (test_urandom_bytes()) {
logerr("test_urandom_bytes();\n");
goto out;
}
rc = 0;
out:
return !!rc;
}
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