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#include <stdio.h>
#include <stdlib.h>
#include "raid.h"
#include "test.h"

#define TEST_SOURCES 16
#define TEST_LEN     16 * 1024

int
main(int argc, char *argv[])
{
        int i, j, should_pass, should_fail, ret = 0;
        void *buffs[TEST_SOURCES + 1] = { NULL };

        printf("XOR example\n");
        for (i = 0; i < TEST_SOURCES + 1; i++) {
                void *buf;
                if (posix_memalign(&buf, 32, TEST_LEN)) {
                        printf("alloc error: Fail");
                        goto exit;
                }
                buffs[i] = buf;
        }

        printf("Make random data\n");
        for (i = 0; i < TEST_SOURCES + 1; i++)
                for (j = 0; j < TEST_LEN; j++)
                        ((char *) buffs[i])[j] = rand();

        printf("Generate xor parity\n");
        xor_gen(TEST_SOURCES + 1, TEST_LEN, buffs);

        printf("Check parity: ");
        should_pass = xor_check(TEST_SOURCES + 1, TEST_LEN, buffs);
        printf("%s\n", should_pass == 0 ? "Pass" : "Fail");
        if (should_pass != 0) {
                ret = -1;
                goto exit;
        }

        printf("Find corruption: ");
        ((char *) buffs[TEST_SOURCES / 2])[TEST_LEN / 2] ^= 1;      // flip one bit
        should_fail = xor_check(TEST_SOURCES + 1, TEST_LEN, buffs); // recheck
        printf("%s\n", should_fail != 0 ? "Pass" : "Fail");

        if (should_fail == 0)
                ret = -1;
exit:
        for (i = 0; i < TEST_SOURCES + 1; i++)
                aligned_free(buffs[i]);
        return ret;
}
