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/* we compile as C90 but use snprintf */
#define _ISOC99_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "minunit.h"
#include "modp_b16.h"
static char* testEndian(void)
{
/* this test that "0001" is "00000001" */
char buf[100];
char result[10];
char endian[] = { (char)0, (char)0, (char)0, (char)1 };
size_t d = modp_b16_encode(buf, endian, (size_t)4);
mu_assert_int_equals(8, d);
mu_assert_str_equals("00000001", buf);
mu_assert_int_equals('0', buf[0]);
mu_assert_int_equals('0', buf[1]);
mu_assert_int_equals('0', buf[2]);
mu_assert_int_equals('0', buf[3]);
mu_assert_int_equals('0', buf[4]);
mu_assert_int_equals('0', buf[5]);
mu_assert_int_equals('0', buf[6]);
mu_assert_int_equals('1', buf[7]);
memset(result, 255, sizeof(result));
d = modp_b16_decode(result, buf, (size_t)8);
mu_assert_int_equals(4, d);
mu_assert_int_equals(endian[0], result[0]);
mu_assert_int_equals(endian[1], result[1]);
mu_assert_int_equals(endian[2], result[2]);
mu_assert_int_equals(endian[3], result[3]);
return 0;
}
static char* testEncodeDecode(void)
{
/* 2 bytes == 4 bytes out */
char ibuf[2];
char obuf[5];
char rbuf[4];
char msg[100]; /* for test messages output */
msg[0] = 0; /* make msg an empty string */
unsigned int i, j;
size_t d;
for (i = 0; i < 256; ++i) {
for (j = 0; j < 256; ++j) {
/* comment this out.. it really slows down the test */
sprintf(msg, "(i,j) = (%u,%u):", i, j);
ibuf[0] = (char)((unsigned char)i);
ibuf[1] = (char)((unsigned char)j);
memset(obuf, 0, sizeof(obuf));
d = modp_b16_encode(obuf, ibuf, (size_t)2);
mu_assert_int_equals_msg(msg, 4, d);
d = modp_b16_decode(rbuf, obuf, d);
mu_assert_int_equals_msg(msg, 2, d);
mu_assert_int_equals_msg(msg, ibuf[0], rbuf[0]);
mu_assert_int_equals_msg(msg, ibuf[1], rbuf[1]);
}
}
return 0;
}
static char* testOddDecode(void)
{
char obuf[100];
char ibuf[100];
memset(obuf, 0, sizeof(obuf));
memset(ibuf, 0, sizeof(ibuf));
/* Test Odd Number of Input bytes
* Should be error
*/
obuf[0] = 1;
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, (size_t)1));
mu_assert_int_equals(1, obuf[0]);
obuf[0] = 1;
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, (size_t)3));
mu_assert_int_equals(1, obuf[0]);
obuf[0] = 1;
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, (size_t)7));
mu_assert_int_equals(1, obuf[0]);
return 0;
}
/** \brief test input that is a multiple of 2 (special case in code)
*/
static char* testDecodeMutlipleOf2(void)
{
char obuf[100];
memset(obuf, 0xff, sizeof(obuf));
mu_assert_int_equals(1, modp_b16_decode(obuf, "01", (size_t)2));
mu_assert_int_equals(1, obuf[0]);
return 0;
}
static char* testOddEncode(void)
{
char obuf[100];
char ibuf[100];
/* oddball 1 char. */
ibuf[0] = 1;
mu_assert_int_equals(2, modp_b16_encode(obuf, ibuf, (size_t)1));
mu_assert_int_equals(obuf[0], '0');
mu_assert_int_equals(obuf[1], '1');
/* oddball 2 char. */
ibuf[0] = 0;
ibuf[1] = 1;
mu_assert_int_equals(4, modp_b16_encode(obuf, ibuf, (size_t)2));
mu_assert_int_equals(obuf[0], '0');
mu_assert_int_equals(obuf[1], '0');
mu_assert_int_equals(obuf[2], '0');
mu_assert_int_equals(obuf[3], '1');
/* oddball 1 char. */
ibuf[0] = 0;
ibuf[1] = 0;
ibuf[2] = 1;
mu_assert_int_equals(6, modp_b16_encode(obuf, ibuf, (size_t)3));
mu_assert_int_equals(obuf[0], '0');
mu_assert_int_equals(obuf[1], '0');
mu_assert_int_equals(obuf[2], '0');
mu_assert_int_equals(obuf[3], '0');
mu_assert_int_equals(obuf[4], '0');
mu_assert_int_equals(obuf[5], '1');
return 0;
}
static char* testBadDecode(void)
{
char obuf[100];
char ibuf[100];
memset(obuf, 0, sizeof(obuf));
memset(ibuf, 0, sizeof(ibuf));
/* we are testing input of 2 bytes, 4 bytes
* to test all possible screwups
*/
strcpy(ibuf, "X1");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "1X");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "XX");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
/* 1 bad char */
strcpy(ibuf, "X111");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "1X11");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "11X1");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "111X");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
/* 2 bad chars */
strcpy(ibuf, "XX11");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "1XX1");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "11XX");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "X1X1");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "1X1X");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "X11X");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
/* 3 bad chars */
strcpy(ibuf, "1XXX");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "X1XX");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "XX1X");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
strcpy(ibuf, "XXX1");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
/* 4 bad chars */
strcpy(ibuf, "XXXX");
mu_assert_int_equals(-1, modp_b16_decode(obuf, ibuf, strlen(ibuf)));
return 0;
}
static char* testEmptyInput(void)
{
char obuf[100];
char ibuf[100];
memset(obuf, 0, sizeof(obuf));
memset(ibuf, 0, sizeof(ibuf));
/* encode 0 bytes, get a null byte back */
obuf[0] = 1;
mu_assert_int_equals(0, modp_b16_encode(obuf, ibuf, (size_t)0));
mu_assert_int_equals(0, obuf[0]);
/* decode 0 bytes, buffer is untouched */
obuf[0] = 1;
mu_assert_int_equals(0, modp_b16_decode(obuf, ibuf, (size_t)0));
mu_assert_int_equals(1, obuf[0]);
return 0;
}
static char* testLengths(void)
{
/* Decode Len
* 2 input -> 1 output. No added NULL byte
*/
mu_assert_int_equals(0, modp_b16_decode_len(0));
mu_assert_int_equals(1, modp_b16_decode_len(1));
mu_assert_int_equals(1, modp_b16_decode_len(2));
mu_assert_int_equals(2, modp_b16_decode_len(3));
mu_assert_int_equals(2, modp_b16_decode_len(4));
/* Encode Len
* 1 byte -> 2 output + 1 null byte
*/
mu_assert_int_equals(1, modp_b16_encode_len(0));
mu_assert_int_equals(3, modp_b16_encode_len(1));
mu_assert_int_equals(5, modp_b16_encode_len(2));
mu_assert_int_equals(7, modp_b16_encode_len(3));
mu_assert_int_equals(9, modp_b16_encode_len(4));
return 0;
}
static char* testValgrind(void)
{
/*
* an input of 3 chars, means output is 3*2+1 = 7 chars
* However, the code works on output in values of 4bytes
* so valgrind complains about use stomping on memory
*/
const size_t buflen1 = 3;
const size_t buflen2 = 7;
char* ibuf = (char*)malloc(buflen1);
ibuf[0] = '1';
ibuf[1] = '2';
ibuf[2] = '3';
char* obuf = (char*)malloc(buflen2);
memset(obuf, 0, buflen1);
size_t d = modp_b16_encode(obuf, ibuf, buflen1);
free(ibuf);
free(obuf);
mu_assert_int_equals(6, d);
return 0;
}
static char* all_tests(void)
{
mu_run_test(testEndian);
mu_run_test(testEncodeDecode);
mu_run_test(testLengths);
mu_run_test(testEmptyInput);
mu_run_test(testBadDecode);
mu_run_test(testOddDecode);
mu_run_test(testOddEncode);
mu_run_test(testDecodeMutlipleOf2);
mu_run_test(testValgrind);
return 0;
}
UNITTESTS
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