#include <stdio.h>
#include <stdlib.h>
#include <string.h>

extern unsigned char *asmb(unsigned char *a);

unsigned char *asmb_ref(unsigned char *s)
{
	unsigned long i;
	for (i=0; s[i]; i++) {
		unsigned char c=s[i];
		c += (c>='A' && c<='Z') ? 'a'-'A' : 0;
		s[i] = c;
	}
	return s;
}

#define NUM_TESTCASES 12
int main() {
	char *input[NUM_TESTCASES]={"asdfABCDEFGHKL54", 
		"foofuuMUHkk", 
		"AbC", 
		"BLA|MUHMKUH|KA", 
		"ASDFNERABHDFKHDFKLGJAHGLKAHGLKASHGEARNAKLVNLVAANLSADJVHASDLGH", 
		"asdfABCDEFGHKL544", 
		"asdfA\0BCDEFGHKL5", 
		"foofuuMUHkk\0AAAA", 
		"AbC\0AAAAAAAAAAAA", 
		"BLA|MUHMKUH|KAA\0", 
		"ASDFASDFasdfasdfaBC\0AAAABBBBCCCC", 
		"ASDFASDFasdfasdfaBC0AAAABBBBCCCCmuhKA\0asASDFasdf" 
	};
	int len[NUM_TESTCASES] = {16,
		11,
		3,
		14,
		60,
		17,
		16,
		16,
		16,
		16,
		32,
		48
	};
	char *output_our, *output_ref;
	char *input_our,  *input_ref;

	int i,j;
	for(i = 0; i < NUM_TESTCASES; i++) {
		input_our = strndup(input[i], len[i]);
		input_ref = strndup(input[i], len[i]);

		output_our = asmb(input_our);
		output_ref = asmb_ref(input_ref);
		if(memcmp(output_our,output_ref, len[i]) != 0) {
			printf("Testfall falsch! \n Input: \n");
			for(j = 0; j <= len[i]; j++) {
				printf("%02X ",input[j]);
			}
			printf("\nerwartet: \n");
			for(j = 0; j <= len[i]; j++) {
				printf("%02X ",output_ref[j]);
			}
			printf("\ntatsaechliches Ergebnis: \n");
			for(j = 0; j <= len[i]; j++) {
				printf("%02X ",output_our[j]);
			}
			printf("\n");
		}
		else {
			printf("Testfall korrekt\n");
		}
		free(input_our);
		free(input_ref);
	}
	return 0;
}