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