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/* BEGIN_HEADER */
/* The printf test functions take a format argument from the test data
* for several reasons:
* - For some tests, it makes sense to vary the format.
* - For all tests, it means we're testing the actual printf function
* that parses the format at runtime, and not a compiler optimization.
* (It may be useful to add tests that allow compiler optimizations.
* There aren't any yet at the time of writing.)
*/
#include "mbedtls/platform.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NEWLINE_CHAR '\n'
#define SPACE_CHAR ' '
#define DOUBLE_QUOTE_CHAR '"'
#define COLON_CHAR ':'
#define QUESTION_CHAR '?'
#define BACKSLASH_CHAR '\\'
#define LOWERCASE_N_CHAR 'n'
/* END_HEADER */
/* BEGIN_CASE */
void printf_int(char *format, /* any format expecting one int argument, e.g. "%d" */
int x, char *result)
{
char *output = NULL;
const size_t n = strlen(result);
/* Nominal case: buffer just large enough */
TEST_CALLOC(output, n + 1);
TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, x));
TEST_MEMORY_COMPARE(result, n + 1, output, n + 1);
mbedtls_free(output);
output = NULL;
exit:
mbedtls_free(output);
}
/* END_CASE */
/* BEGIN_CASE */
void printf_long_max(const char *format, /* "%lx" or longer type */
long value)
{
char *expected = NULL;
char *output = NULL;
/* 2 hex digits per byte */
const size_t n = sizeof(value) * 2;
/* We assume that long has no padding bits! */
TEST_CALLOC(expected, n + 1);
expected[0] = '7';
memset(expected + 1, 'f', sizeof(value) * 2 - 1);
TEST_CALLOC(output, n + 1);
TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, value));
TEST_MEMORY_COMPARE(expected, n + 1, output, n + 1);
mbedtls_free(output);
output = NULL;
exit:
mbedtls_free(output);
mbedtls_free(expected);
}
/* END_CASE */
/* BEGIN_CASE */
void printf_char2(char *format, /* "%c%c" */
int arg1, int arg2, char *result)
{
char *output = NULL;
const size_t n = strlen(result);
/* Nominal case: buffer just large enough */
TEST_CALLOC(output, n + 1);
TEST_EQUAL(n, mbedtls_snprintf(output, n + 1, format, arg1, arg2));
TEST_MEMORY_COMPARE(result, n + 1, output, n + 1);
mbedtls_free(output);
output = NULL;
exit:
mbedtls_free(output);
}
/* END_CASE */
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