test/sanitytest.c

   1 /*
   2  * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11 #include "testutil.h"
  12 #include "internal/numbers.h"
  13
  14 static int test_sanity_null_zero(void)
  15 {
  16     char *p;
  17     char bytes[sizeof(p)];
  18
  19     /* Is NULL equivalent to all-bytes-zero? */
  20     p = NULL;
  21     memset(bytes, 0, sizeof(bytes));
  22     return TEST_mem_eq(&p, sizeof(p), bytes, sizeof(bytes));
  23 }
  24
  25 static int test_sanity_enum_size(void)
  26 {
  27     enum smallchoices { sa, sb, sc };
  28     enum medchoices { ma, mb, mc, md, me, mf, mg, mh, mi, mj, mk, ml };
  29     enum largechoices {
  30         a01, b01, c01, d01, e01, f01, g01, h01, i01, j01,
  31         a02, b02, c02, d02, e02, f02, g02, h02, i02, j02,
  32         a03, b03, c03, d03, e03, f03, g03, h03, i03, j03,
  33         a04, b04, c04, d04, e04, f04, g04, h04, i04, j04,
  34         a05, b05, c05, d05, e05, f05, g05, h05, i05, j05,
  35         a06, b06, c06, d06, e06, f06, g06, h06, i06, j06,
  36         a07, b07, c07, d07, e07, f07, g07, h07, i07, j07,
  37         a08, b08, c08, d08, e08, f08, g08, h08, i08, j08,
  38         a09, b09, c09, d09, e09, f09, g09, h09, i09, j09,
  39         a10, b10, c10, d10, e10, f10, g10, h10, i10, j10,
  40         xxx };
  41
  42     /* Enum size */
  43     if (!TEST_size_t_eq(sizeof(enum smallchoices), sizeof(int))
  44         || !TEST_size_t_eq(sizeof(enum medchoices), sizeof(int))
  45         || !TEST_size_t_eq(sizeof(enum largechoices), sizeof(int)))
  46         return 0;
  47     return 1;
  48 }
  49
  50 static int test_sanity_twos_complement(void)
  51 {
  52     /* Basic two's complement checks. */
  53     if (!TEST_int_eq(~(-1), 0)
  54         || !TEST_long_eq(~(-1L), 0L))
  55         return 0;
  56     return 1;
  57 }
  58
  59 static int test_sanity_sign(void)
  60 {
  61     /* Check that values with sign bit 1 and value bits 0 are valid */
  62     if (!TEST_int_eq(-(INT_MIN + 1), INT_MAX)
  63         || !TEST_long_eq(-(LONG_MIN + 1), LONG_MAX))
  64         return 0;
  65     return 1;
  66 }
  67
  68 static int test_sanity_unsigned_conversion(void)
  69 {
  70     /* Check that unsigned-to-signed conversions preserve bit patterns */
  71     if (!TEST_int_eq((int)((unsigned int)INT_MAX + 1), INT_MIN)
  72         || !TEST_long_eq((long)((unsigned long)LONG_MAX + 1), LONG_MIN))
  73         return 0;
  74     return 1;
  75 }
  76
  77 static int test_sanity_range(void)
  78 {
  79     /* This isn't possible to check using the framework functions */
  80     if (SIZE_MAX < INT_MAX) {
  81         TEST_error("int must not be wider than size_t");
  82         return 0;
  83     }
  84     return 1;
  85 }
  86
  87 static int test_sanity_memcmp(void)
  88 {
  89     return CRYPTO_memcmp("ab","cd",2);
  90 }
  91
  92 int setup_tests(void)
  93 {
  94     ADD_TEST(test_sanity_null_zero);
  95     ADD_TEST(test_sanity_enum_size);
  96     ADD_TEST(test_sanity_twos_complement);
  97     ADD_TEST(test_sanity_sign);
  98     ADD_TEST(test_sanity_unsigned_conversion);
  99     ADD_TEST(test_sanity_range);
 100     ADD_TEST(test_sanity_memcmp);
 101     return 1;
 102 }
 103