test/sanitytest.c

   1 /*
   2  * Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 <internal/numbers.h>
  12
  13 #include "testutil.h"
  14
  15 static int test_sanity_null_zero(void)
  16 {
  17     char *p;
  18     char bytes[sizeof(p)];
  19
  20     /* Is NULL equivalent to all-bytes-zero? */
  21     p = NULL;
  22     memset(bytes, 0, sizeof bytes);
  23     return TEST_mem_eq(&p, sizeof(p), bytes, sizeof(bytes));
  24 }
  25
  26 static int test_sanity_enum_size(void)
  27 {
  28     enum smallchoices { sa, sb, sc };
  29     enum medchoices { ma, mb, mc, md, me, mf, mg, mh, mi, mj, mk, ml };
  30     enum largechoices {
  31         a01, b01, c01, d01, e01, f01, g01, h01, i01, j01,
  32         a02, b02, c02, d02, e02, f02, g02, h02, i02, j02,
  33         a03, b03, c03, d03, e03, f03, g03, h03, i03, j03,
  34         a04, b04, c04, d04, e04, f04, g04, h04, i04, j04,
  35         a05, b05, c05, d05, e05, f05, g05, h05, i05, j05,
  36         a06, b06, c06, d06, e06, f06, g06, h06, i06, j06,
  37         a07, b07, c07, d07, e07, f07, g07, h07, i07, j07,
  38         a08, b08, c08, d08, e08, f08, g08, h08, i08, j08,
  39         a09, b09, c09, d09, e09, f09, g09, h09, i09, j09,
  40         a10, b10, c10, d10, e10, f10, g10, h10, i10, j10,
  41         xxx };
  42
  43     /* Enum size */
  44     if (!TEST_size_t_eq(sizeof(enum smallchoices), sizeof(int))
  45         || !TEST_size_t_eq(sizeof(enum medchoices), sizeof(int))
  46         || !TEST_size_t_eq(sizeof(enum largechoices), sizeof(int)))
  47         return 0;
  48     return 1;
  49 }
  50
  51 static int test_sanity_twos_complement(void)
  52 {
  53     /* Basic two's complement checks. */
  54     if (!TEST_int_eq(~(-1), 0)
  55         || !TEST_long_eq(~(-1L), 0L))
  56         return 0;
  57     return 1;
  58 }
  59
  60 static int test_sanity_sign(void)
  61 {
  62     /* Check that values with sign bit 1 and value bits 0 are valid */
  63     if (!TEST_int_eq(-(INT_MIN + 1), INT_MAX)
  64         || !TEST_long_eq(-(LONG_MIN + 1), LONG_MAX))
  65         return 0;
  66     return 1;
  67 }
  68
  69 static int test_sanity_unsigned_convertion(void)
  70 {
  71     /* Check that unsigned-to-signed conversions preserve bit patterns */
  72     if (!TEST_int_eq((int)((unsigned int)INT_MAX + 1), INT_MIN)
  73         || !TEST_long_eq((long)((unsigned long)LONG_MAX + 1), LONG_MIN))
  74         return 0;
  75     return 1;
  76 }
  77
  78 int setup_tests(void)
  79 {
  80     ADD_TEST(test_sanity_null_zero);
  81     ADD_TEST(test_sanity_enum_size);
  82     ADD_TEST(test_sanity_twos_complement);
  83     ADD_TEST(test_sanity_sign);
  84     ADD_TEST(test_sanity_unsigned_convertion);
  85     return 1;
  86 }
  87