test/testutil/tests.c - third_party/openssl - Git at Google

 /*
  * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 #include "../testutil.h"
 #include "output.h"
 #include "tu_local.h"

 #include <string.h>
 #include <ctype.h>
 #include "../../e_os.h"

 /* The size of memory buffers to display on failure */
 #define MEM_BUFFER_SIZE     (2000)
 #define MAX_STRING_WIDTH    (80)
 #define BN_OUTPUT_SIZE      (8)

 /* Output a failed test first line */
 static void test_fail_message_prefix(const char *prefix, const char *file,
                                      int line, const char *type,
                                      const char *left, const char *right,
                                      const char *op)
 {
     test_printf_stderr("%*s# %s: ", subtest_level(), "",
                        prefix != NULL ? prefix : "ERROR");
     if (type)
         test_printf_stderr("(%s) ", type);
     if (op != NULL)
         test_printf_stderr("'%s %s %s' failed", left, op, right);
     if (file != NULL) {
         test_printf_stderr(" @ %s:%d", file, line);
     }
     test_printf_stderr("\n");
 }

 /* Output a diff header */
 static void test_diff_header(const char *left, const char *right)
 {
     test_printf_stderr("%*s# --- %s\n", subtest_level(), "", left);
     test_printf_stderr("%*s# +++ %s\n", subtest_level(), "", right);
 }

 /*
  * A common routine to output test failure messages.  Generally this should not
  * be called directly, rather it should be called by the following functions.
  *
  * |desc| is a printf formatted description with arguments |args| that is
  * supplied by the user and |desc| can be NULL.  |type| is the data type
  * that was tested (int, char, ptr, ...).  |fmt| is a system provided
  * printf format with following arguments that spell out the failure
  * details i.e. the actual values compared and the operator used.
  *
  * The typical use for this is from an utility test function:
  *
  * int test6(const char *file, int line, int n) {
  *     if (n != 6) {
  *         test_fail_message(1, file, line, "int", "value %d is not %d", n, 6);
  *         return 0;
  *     }
  *     return 1;
  * }
  *
  * calling test6(3, "oops") will return 0 and produce out along the lines of:
  *      FAIL oops: (int) value 3 is not 6\n
  */
 static void test_fail_message(const char *prefix, const char *file, int line,
                               const char *type, const char *left,
                               const char *right, const char *op,
                               const char *fmt, ...)
             PRINTF_FORMAT(8, 9);

 static void test_fail_message_va(const char *prefix, const char *file,
                                  int line, const char *type,
                                  const char *left, const char *right,
                                  const char *op, const char *fmt, va_list ap)
 {
     test_fail_message_prefix(prefix, file, line, type, left, right, op);
     if (fmt != NULL) {
         test_printf_stderr("%*s# ", subtest_level(), "");
         test_vprintf_stderr(fmt, ap);
         test_printf_stderr("\n");
     }
     test_printf_stderr("\n");
     test_flush_stderr();
 }

 static void test_string_null_empty(const char *m, int indent, char c)
 {
     if (m == NULL)
         test_printf_stderr("%*s# % 4s %c NULL\n", indent, "", "", c);
     else
         test_printf_stderr("%*s# % 4u:%c ''\n", indent, "", 0u, c);
 }

 static void test_fail_string_message(const char *prefix, const char *file,
                                      int line, const char *type,
                                      const char *left, const char *right,
                                      const char *op, const char *m1, size_t l1,
                                      const char *m2, size_t l2)
 {
     const int indent = subtest_level();
     const size_t width = (MAX_STRING_WIDTH - indent - 12) / 16 * 16;
     char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
     char bdiff[MAX_STRING_WIDTH + 1];
     size_t n1, n2, i;
     unsigned int cnt = 0, diff;

     test_fail_message_prefix(prefix, file, line, type, left, right, op);
     if (m1 == NULL)
         l1 = 0;
     if (m2 == NULL)
         l2 = 0;
     if (l1 == 0 && l2 == 0) {
         if ((m1 == NULL) == (m2 == NULL)) {
             test_string_null_empty(m1, indent, ' ');
         } else {
             test_diff_header(left, right);
             test_string_null_empty(m1, indent, '-');
             test_string_null_empty(m2, indent, '+');
         }
         goto fin;
     }

     if (l1 != l2 || strcmp(m1, m2) != 0)
         test_diff_header(left, right);

     while (l1 > 0 || l2 > 0) {
         n1 = n2 = 0;
         if (l1 > 0) {
             b1[n1 = l1 > width ? width : l1] = 0;
             for (i = 0; i < n1; i++)
                 b1[i] = isprint(m1[i]) ? m1[i] : '.';
         }
         if (l2 > 0) {
             b2[n2 = l2 > width ? width : l2] = 0;
             for (i = 0; i < n2; i++)
                 b2[i] = isprint(m2[i]) ? m2[i] : '.';
         }
         diff = 0;
         i = 0;
         if (n1 > 0 && n2 > 0) {
             const size_t j = n1 < n2 ? n1 : n2;

             for (; i < j; i++)
                 if (m1[i] == m2[i]) {
                     bdiff[i] = ' ';
                 } else {
                     bdiff[i] = '^';
                     diff = 1;
                 }
             bdiff[i] = '\0';
         }
         if (n1 == n2 && !diff) {
             test_printf_stderr("%*s# % 4u:  '%s'\n", indent, "", cnt,
                                n2 > n1 ? b2 : b1);
         } else {
             if (cnt == 0 && (m1 == NULL || *m1 == '\0'))
                 test_string_null_empty(m1, indent, '-');
             else if (n1 > 0)
                 test_printf_stderr("%*s# % 4u:- '%s'\n", indent, "", cnt, b1);
             if (cnt == 0 && (m2 == NULL || *m2 == '\0'))
                test_string_null_empty(m2, indent, '+');
             else if (n2 > 0)
                 test_printf_stderr("%*s# % 4u:+ '%s'\n", indent, "", cnt, b2);
             if (diff && i > 0)
                 test_printf_stderr("%*s# % 4s    %s\n", indent, "", "", bdiff);
         }
         m1 += n1;
         m2 += n2;
         l1 -= n1;
         l2 -= n2;
         cnt += width;
     }
 fin:
     test_printf_stderr("\n");
     test_flush_stderr();
 }

 static void hex_convert_memory(const unsigned char *m, size_t n, char *b,
                                size_t width)
 {
     size_t i;

     for (i = 0; i < n; i++) {
         const unsigned char c = *m++;

         *b++ = "0123456789abcdef"[c >> 4];
         *b++ = "0123456789abcdef"[c & 15];
         if (i % width == width - 1 && i != n - 1)
             *b++ = ' ';
     }
     *b = '\0';
 }

 static const int bn_bytes = (MAX_STRING_WIDTH - 9) / (BN_OUTPUT_SIZE * 2 + 1)
                             * BN_OUTPUT_SIZE;
 static const int bn_chars = (MAX_STRING_WIDTH - 9) / (BN_OUTPUT_SIZE * 2 + 1)
                             * (BN_OUTPUT_SIZE * 2 + 1) - 1;

 static void test_bignum_header_line(void)
 {
     test_printf_stderr("%*s#  %*s\n", subtest_level(), "", bn_chars + 6,
                        "bit position");
 }

 static void test_bignum_zero_print(const BIGNUM *bn, char sep)
 {
     const char *v = "NULL", *suf = "";
     if (bn != NULL) {
         suf = ":    0";
         v = BN_is_negative(bn) ? "-0" : "0";
     }
     test_printf_stderr("%*s# %c%*s%s\n", subtest_level(), "", sep, bn_chars,
                        v, suf);
 }

 static int convert_bn_memory(const unsigned char *in, size_t bytes,
                              char *out, int *lz, const BIGNUM *bn)
 {
     int n = bytes * 2, i;
     char *p = out, *q = NULL;

     if (bn != NULL && !BN_is_zero(bn)) {
         hex_convert_memory(in, bytes, out, BN_OUTPUT_SIZE);
         if (*lz) {
             for (; *p == '0' || *p == ' '; p++)
                 if (*p == '0') {
                     q = p;
                     *p = ' ';
                     n--;
                 }
             if (*p == '\0') {
                 /*
                  * in[bytes] is defined because we're converting a non-zero
                  * number and we've not seen a non-zero yet.
                  */
                 if ((in[bytes] & 0xf0) != 0 && BN_is_negative(bn)) {
                     *lz = 0;
                     *q = '-';
                     n++;
                 }
             } else {
                 *lz = 0;
                 if (BN_is_negative(bn)) {
                     /*
                      * This is valid because we always convert more digits than
                      * the number holds.
                      */
                     *q = '-';
                     n++;
                 }
             }
         }
        return n;
     }

     for (i = 0; i < n; i++) {
         *p++ = ' ';
         if (i % (2 * BN_OUTPUT_SIZE) == 2 * BN_OUTPUT_SIZE - 1 && i != n - 1)
             *p++ = ' ';
     }
     *p = '\0';
     if (bn == NULL)
         q = "NULL";
     else
         q = BN_is_negative(bn) ? "-0" : "0";
     strcpy(p - strlen(q), q);
     return 0;
 }

 static void test_fail_bignum_common(const char *prefix, const char *file,
                                     int line, const char *type,
                                     const char *left, const char *right,
                                     const char *op,
                                     const BIGNUM *bn1, const BIGNUM *bn2)
 {
     const int indent = subtest_level();
     const size_t bytes = bn_bytes;
     char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
     char *p, bdiff[MAX_STRING_WIDTH + 1];
     size_t l1, l2, n1, n2, i, len;
     unsigned int cnt, diff, real_diff;
     unsigned char *m1 = NULL, *m2 = NULL;
     int lz1 = 1, lz2 = 1;
     unsigned char buffer[MEM_BUFFER_SIZE * 2], *bufp = buffer;

     l1 = bn1 == NULL ? 0 : (BN_num_bytes(bn1) + (BN_is_negative(bn1) ? 1 : 0));
     l2 = bn2 == NULL ? 0 : (BN_num_bytes(bn2) + (BN_is_negative(bn2) ? 1 : 0));
     if (l1 == 0 && l2 == 0) {
         if ((bn1 == NULL) == (bn2 == NULL)) {
             test_bignum_header_line();
             test_bignum_zero_print(bn1, ' ');
         } else {
             test_diff_header(left, right);
             test_bignum_header_line();
             test_bignum_zero_print(bn1, '-');
             test_bignum_zero_print(bn2, '+');
         }
         goto fin;
     }

     if (l1 != l2 || bn1 == NULL || bn2 == NULL || BN_cmp(bn1, bn2) != 0)
         test_diff_header(left, right);
     test_bignum_header_line();

     len = ((l1 > l2 ? l1 : l2) + bytes - 1) / bytes * bytes;

     if (len > MEM_BUFFER_SIZE && (bufp = OPENSSL_malloc(len * 2)) == NULL) {
         bufp = buffer;
         len = MEM_BUFFER_SIZE;
         test_printf_stderr("%*s# WARNING: these BIGNUMs have been truncated",
                            indent, "");
     }

     if (bn1 != NULL) {
         m1 = bufp;
         BN_bn2binpad(bn1, m1, len);
     }
     if (bn2 != NULL) {
         m2 = bufp + len;
         BN_bn2binpad(bn2, m2, len);
     }

     while (len > 0) {
         cnt = 8 * (len - bytes);
         n1 = convert_bn_memory(m1, bytes, b1, &lz1, bn1);
         n2 = convert_bn_memory(m2, bytes, b2, &lz2, bn2);

         diff = real_diff = 0;
         i = 0;
         p = bdiff;
         for (i=0; b1[i] != '\0'; i++)
             if (b1[i] == b2[i] || b1[i] == ' ' || b2[i] == ' ') {
                 *p++ = ' ';
                 diff |= b1[i] != b2[i];
             } else {
                 *p++ = '^';
                 real_diff = diff = 1;
             }
         *p++ = '\0';
         if (!diff) {
             test_printf_stderr("%*s#  %s:% 5d\n", indent, "",
                                n2 > n1 ? b2 : b1, cnt);
         } else {
             if (cnt == 0 && bn1 == NULL)
                 test_printf_stderr("%*s# -%s\n", indent, "", b1);
             else if (cnt == 0 || n1 > 0)
                 test_printf_stderr("%*s# -%s:% 5d\n", indent, "", b1, cnt);
             if (cnt == 0 && bn2 == NULL)
                 test_printf_stderr("%*s# +%s\n", indent, "", b2);
             else if (cnt == 0 || n2 > 0)
                 test_printf_stderr("%*s# +%s:% 5d\n", indent, "", b2, cnt);
             if (real_diff && (cnt == 0 || (n1 > 0 && n2 > 0))
                     && bn1 != NULL && bn2 != NULL)
                 test_printf_stderr("%*s#  %s\n", indent, "", bdiff);
         }
         if (m1 != NULL)
             m1 += bytes;
         if (m2 != NULL)
             m2 += bytes;
         len -= bytes;
     }
 fin:
     test_printf_stderr("\n");
     test_flush_stderr();
     if (bufp != buffer)
         OPENSSL_free(bufp);
 }

 static void test_fail_bignum_message(const char *prefix, const char *file,
                                      int line, const char *type,
                                      const char *left, const char *right,
                                      const char *op,
                                      const BIGNUM *bn1, const BIGNUM *bn2)
 {
     test_fail_message_prefix(prefix, file, line, type, left, right, op);
     test_fail_bignum_common(prefix, file, line, type, left, right, op, bn1, bn2);
 }

 static void test_fail_bignum_mono_message(const char *prefix, const char *file,
                                           int line, const char *type,
                                           const char *left, const char *right,
                                           const char *op, const BIGNUM *bn)
 {
     test_fail_message_prefix(prefix, file, line, type, left, right, op);
     test_fail_bignum_common(prefix, file, line, type, left, right, op, bn, bn);
 }

 static void test_memory_null_empty(const unsigned char *m, int indent, char c)
 {
     if (m == NULL)
         test_printf_stderr("%*s# % 4s %c%s\n", indent, "", "", c, "NULL");
     else
         test_printf_stderr("%*s# %04x %c%s\n", indent, "", 0u, c, "empty");
 }

 static void test_fail_memory_message(const char *prefix, const char *file,
                                      int line, const char *type,
                                      const char *left, const char *right,
                                      const char *op,
                                      const unsigned char *m1, size_t l1,
                                      const unsigned char *m2, size_t l2)
 {
     const int indent = subtest_level();
     const size_t bytes = (MAX_STRING_WIDTH - 9) / 17 * 8;
     char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
     char *p, bdiff[MAX_STRING_WIDTH + 1];
     size_t n1, n2, i;
     unsigned int cnt = 0, diff;

     test_fail_message_prefix(prefix, file, line, type, left, right, op);
     if (m1 == NULL)
         l1 = 0;
     if (m2 == NULL)
         l2 = 0;
     if (l1 == 0 && l2 == 0) {
         if ((m1 == NULL) == (m2 == NULL)) {
             test_memory_null_empty(m1, indent, ' ');
         } else {
             test_diff_header(left, right);
             test_memory_null_empty(m1, indent, '-');
             test_memory_null_empty(m2, indent, '+');
         }
         goto fin;
     }

     if (l1 != l2 || memcmp(m1, m2, l1) != 0)
         test_diff_header(left, right);

     while (l1 > 0 || l2 > 0) {
         n1 = n2 = 0;
         if (l1 > 0) {
             n1 = l1 > bytes ? bytes : l1;
             hex_convert_memory(m1, n1, b1, 8);
         }
         if (l2 > 0) {
             n2 = l2 > bytes ? bytes : l2;
             hex_convert_memory(m2, n2, b2, 8);
         }

         diff = 0;
         i = 0;
         p = bdiff;
         if (n1 > 0 && n2 > 0) {
             const size_t j = n1 < n2 ? n1 : n2;

             for (; i < j; i++) {
                 if (m1[i] == m2[i]) {
                     *p++ = ' ';
                     *p++ = ' ';
                 } else {
                     *p++ = '^';
                     *p++ = '^';
                     diff = 1;
                 }
                 if (i % 8 == 7 && i != j - 1)
                     *p++ = ' ';
             }
             *p++ = '\0';
         }

         if (n1 == n2 && !diff) {
             test_printf_stderr("%*s# %04x: %s\n", indent, "", cnt, b1);
         } else {
             if (cnt == 0 && (m1 == NULL || l1 == 0))
                 test_memory_null_empty(m1, indent, '-');
             else if (n1 > 0)
                 test_printf_stderr("%*s# %04x:-%s\n", indent, "", cnt, b1);
             if (cnt == 0 && (m2 == NULL || l2 == 0))
                 test_memory_null_empty(m2, indent, '+');
             else if (n2 > 0)
                 test_printf_stderr("%*s# %04x:+%s\n", indent, "", cnt, b2);
             if (diff && i > 0)
                 test_printf_stderr("%*s# % 4s  %s\n", indent, "", "", bdiff);
         }
         m1 += n1;
         m2 += n2;
         l1 -= n1;
         l2 -= n2;
         cnt += bytes;
     }
 fin:
     test_printf_stderr("\n");
     test_flush_stderr();
 }

 static void test_fail_message(const char *prefix, const char *file,
                               int line, const char *type,
                               const char *left, const char *right,
                               const char *op, const char *fmt, ...)
 {
     va_list ap;

     va_start(ap, fmt);
     test_fail_message_va(prefix, file, line, type, left, right, op, fmt, ap);
     va_end(ap);
 }

 void test_info_c90(const char *desc, ...)
 {
     va_list ap;

     va_start(ap, desc);
     test_fail_message_va("INFO", NULL, -1, NULL, NULL, NULL, NULL, desc, ap);
     va_end(ap);
 }

 void test_info(const char *file, int line, const char *desc, ...)
 {
     va_list ap;

     va_start(ap, desc);
     test_fail_message_va("INFO", file, line, NULL, NULL, NULL, NULL, desc, ap);
     va_end(ap);
 }

 void test_error_c90(const char *desc, ...)
 {
     va_list ap;

     va_start(ap, desc);
     test_fail_message_va(NULL, NULL, -1, NULL, NULL, NULL, NULL, desc, ap);
     va_end(ap);
 }

 void test_error(const char *file, int line, const char *desc, ...)
 {
     va_list ap;

     va_start(ap, desc);
     test_fail_message_va(NULL, file, line, NULL, NULL, NULL, NULL, desc, ap);
     va_end(ap);
 }

 void test_openssl_errors(void)
 {
     ERR_print_errors_cb(openssl_error_cb, NULL);
 }

 /*
  * Define some comparisons between pairs of various types.
  * These functions return 1 if the test is true.
  * Otherwise, they return 0 and pretty-print diagnostics.
  *
  * In each case the functions produced are:
  *  int test_name_eq(const type t1, const type t2, const char *desc, ...);
  *  int test_name_ne(const type t1, const type t2, const char *desc, ...);
  *  int test_name_lt(const type t1, const type t2, const char *desc, ...);
  *  int test_name_le(const type t1, const type t2, const char *desc, ...);
  *  int test_name_gt(const type t1, const type t2, const char *desc, ...);
  *  int test_name_ge(const type t1, const type t2, const char *desc, ...);
  *
  * The t1 and t2 arguments are to be compared for equality, inequality,
  * less than, less than or equal to, greater than and greater than or
  * equal to respectively.  If the specified condition holds, the functions
  * return 1.  If the condition does not hold, the functions print a diagnostic
  * message and return 0.
  *
  * The desc argument is a printf format string followed by its arguments and
  * this is included in the output if the condition being tested for is false.
  */
 #define DEFINE_COMPARISON(type, name, opname, op, fmt)                  \
     int test_ ## name ## _ ## opname(const char *file, int line,        \
                                      const char *s1, const char *s2,    \
                                      const type t1, const type t2)      \
     {                                                                   \
         if (t1 op t2)                                                   \
             return 1;                                                   \
         test_fail_message(NULL, file, line, #type, s1, s2, #op,         \
                           "[" fmt "] compared to [" fmt "]",            \
                           t1, t2);                                      \
         return 0;                                                       \
     }

 #define DEFINE_COMPARISONS(type, name, fmt)                             \
     DEFINE_COMPARISON(type, name, eq, ==, fmt)                          \
     DEFINE_COMPARISON(type, name, ne, !=, fmt)                          \
     DEFINE_COMPARISON(type, name, lt, <, fmt)                           \
     DEFINE_COMPARISON(type, name, le, <=, fmt)                          \
     DEFINE_COMPARISON(type, name, gt, >, fmt)                           \
     DEFINE_COMPARISON(type, name, ge, >=, fmt)

 DEFINE_COMPARISONS(int, int, "%d")
 DEFINE_COMPARISONS(unsigned int, uint, "%u")
 DEFINE_COMPARISONS(char, char, "%c")
 DEFINE_COMPARISONS(unsigned char, uchar, "%u")
 DEFINE_COMPARISONS(long, long, "%ld")
 DEFINE_COMPARISONS(unsigned long, ulong, "%lu")
 DEFINE_COMPARISONS(size_t, size_t, "%zu")

 DEFINE_COMPARISON(void *, ptr, eq, ==, "%p")
 DEFINE_COMPARISON(void *, ptr, ne, !=, "%p")

 int test_ptr_null(const char *file, int line, const char *s, const void *p)
 {
     if (p == NULL)
         return 1;
     test_fail_message(NULL, file, line, "ptr", s, "NULL", "==", "%p", p);
     return 0;
 }

 int test_ptr(const char *file, int line, const char *s, const void *p)
 {
     if (p != NULL)
         return 1;
     test_fail_message(NULL, file, line, "ptr", s, "NULL", "!=", "%p", p);
     return 0;
 }

 int test_true(const char *file, int line, const char *s, int b)
 {
     if (b)
         return 1;
     test_fail_message(NULL, file, line, "bool", s, "true", "==", "false");
     return 0;
 }

 int test_false(const char *file, int line, const char *s, int b)
 {
     if (!b)
         return 1;
     test_fail_message(NULL, file, line, "bool", s, "false", "==", "true");
     return 0;
 }

 int test_str_eq(const char *file, int line, const char *st1, const char *st2,
                 const char *s1, const char *s2)
 {
     if (s1 == NULL && s2 == NULL)
       return 1;
     if (s1 == NULL || s2 == NULL || strcmp(s1, s2) != 0) {
         test_fail_string_message(NULL, file, line, "string", st1, st2, "==",
                                  s1, s1 == NULL ? 0 : strlen(s1),
                                  s2, s2 == NULL ? 0 : strlen(s2));
         return 0;
     }
     return 1;
 }

 int test_str_ne(const char *file, int line, const char *st1, const char *st2,
                 const char *s1, const char *s2)
 {
     if ((s1 == NULL) ^ (s2 == NULL))
       return 1;
     if (s1 == NULL || strcmp(s1, s2) == 0) {
         test_fail_string_message(NULL, file, line, "string", st1, st2, "!=",
                                  s1, s1 == NULL ? 0 : strlen(s1),
                                  s2, s2 == NULL ? 0 : strlen(s2));
         return 0;
     }
     return 1;
 }

 int test_strn_eq(const char *file, int line, const char *st1, const char *st2,
                  const char *s1, const char *s2, size_t len)
 {
     if (s1 == NULL && s2 == NULL)
       return 1;
     if (s1 == NULL || s2 == NULL || strncmp(s1, s2, len) != 0) {
         test_fail_string_message(NULL, file, line, "string", st1, st2, "==",
                                  s1, s1 == NULL ? 0 : OPENSSL_strnlen(s1, len),
                                  s2, s2 == NULL ? 0 : OPENSSL_strnlen(s2, len));
         return 0;
     }
     return 1;
 }

 int test_strn_ne(const char *file, int line, const char *st1, const char *st2,
                  const char *s1, const char *s2, size_t len)
 {
     if ((s1 == NULL) ^ (s2 == NULL))
       return 1;
     if (s1 == NULL || strncmp(s1, s2, len) == 0) {
         test_fail_string_message(NULL, file, line, "string", st1, st2, "!=",
                                  s1, s1 == NULL ? 0 : OPENSSL_strnlen(s1, len),
                                  s2, s2 == NULL ? 0 : OPENSSL_strnlen(s2, len));
         return 0;
     }
     return 1;
 }

 int test_mem_eq(const char *file, int line, const char *st1, const char *st2,
                 const void *s1, size_t n1, const void *s2, size_t n2)
 {
     if (s1 == NULL && s2 == NULL)
         return 1;
     if (n1 != n2 || s1 == NULL || s2 == NULL || memcmp(s1, s2, n1) != 0) {
         test_fail_memory_message(NULL, file, line, "memory", st1, st2, "==",
                                  s1, n1, s2, n2);
         return 0;
     }
     return 1;
 }

 int test_mem_ne(const char *file, int line, const char *st1, const char *st2,
                 const void *s1, size_t n1, const void *s2, size_t n2)
 {
     if ((s1 == NULL) ^ (s2 == NULL))
         return 1;
     if (n1 != n2)
         return 1;
     if (s1 == NULL || memcmp(s1, s2, n1) == 0) {
         test_fail_memory_message(NULL, file, line, "memory", st1, st2, "!=",
                                  s1, n1, s2, n2);
         return 0;
     }
     return 1;
 }

 #define DEFINE_BN_COMPARISONS(opname, op, zero_cond)                    \
     int test_BN_ ## opname(const char *file, int line,                  \
                            const char *s1, const char *s2,              \
                            const BIGNUM *t1, const BIGNUM *t2)          \
     {                                                                   \
         if (BN_cmp(t1, t2) op 0)                                        \
             return 1;                                                   \
         test_fail_bignum_message(NULL, file, line, "BIGNUM", s1, s2,    \
                                  #op, t1, t2);                          \
         return 0;                                                       \
     }                                                                   \
     int test_BN_ ## opname ## _zero(const char *file, int line,         \
                                     const char *s, const BIGNUM *a)     \
     {                                                                   \
         if (a != NULL &&(zero_cond))                                    \
             return 1;                                                   \
         test_fail_bignum_mono_message(NULL, file, line, "BIGNUM",       \
                                       s, "0", #op, a);                  \
         return 0;                                                       \
     }

 DEFINE_BN_COMPARISONS(eq, ==, BN_is_zero(a))
 DEFINE_BN_COMPARISONS(ne, !=, !BN_is_zero(a))
 DEFINE_BN_COMPARISONS(gt, >,  !BN_is_negative(a) && !BN_is_zero(a))
 DEFINE_BN_COMPARISONS(ge, >=, !BN_is_negative(a) || BN_is_zero(a))
 DEFINE_BN_COMPARISONS(lt, <,  BN_is_negative(a) && !BN_is_zero(a))
 DEFINE_BN_COMPARISONS(le, <=, BN_is_negative(a) || BN_is_zero(a))

 int test_BN_eq_one(const char *file, int line, const char *s, const BIGNUM *a)
 {
     if (a != NULL && BN_is_one(a))
         return 1;
     test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", s, "1", "==", a);
     return 0;
 }

 int test_BN_odd(const char *file, int line, const char *s, const BIGNUM *a)
 {
     if (a != NULL && BN_is_odd(a))
         return 1;
     test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", "ODD(", ")", s, a);
     return 0;
 }

 int test_BN_even(const char *file, int line, const char *s, const BIGNUM *a)
 {
     if (a != NULL && !BN_is_odd(a))
         return 1;
     test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", "EVEN(", ")", s,
                                   a);
     return 0;
 }

 int test_BN_eq_word(const char *file, int line, const char *bns, const char *ws,
                     const BIGNUM *a, BN_ULONG w)
 {
     BIGNUM *bw;

     if (a != NULL && BN_is_word(a, w))
         return 1;
     bw = BN_new();
     BN_set_word(bw, w);
     test_fail_bignum_message(NULL, file, line, "BIGNUM", bns, ws, "==", a, bw);
     BN_free(bw);
     return 0;
 }

 int test_BN_abs_eq_word(const char *file, int line, const char *bns,
                         const char *ws, const BIGNUM *a, BN_ULONG w)
 {
     BIGNUM *bw, *aa;

     if (a != NULL && BN_abs_is_word(a, w))
         return 1;
     bw = BN_new();
     aa = BN_dup(a);
     BN_set_negative(aa, 0);
     BN_set_word(bw, w);
     test_fail_bignum_message(NULL, file, line, "BIGNUM", bns, ws, "abs==",
                              aa, bw);
     BN_free(bw);
     BN_free(aa);
     return 0;
 }
	/*
	* Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
	*
	* Licensed under the OpenSSL license (the "License"). You may not use
	* this file except in compliance with the License. You can obtain a copy
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	#include "../testutil.h"
	#include "output.h"
	#include "tu_local.h"

	#include <string.h>
	#include <ctype.h>
	#include "../../e_os.h"

	/* The size of memory buffers to display on failure */
	#define MEM_BUFFER_SIZE (2000)
	#define MAX_STRING_WIDTH (80)
	#define BN_OUTPUT_SIZE (8)

	/* Output a failed test first line */
	static void test_fail_message_prefix(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char *op)
	{
	test_printf_stderr("%*s# %s: ", subtest_level(), "",
	prefix != NULL ? prefix : "ERROR");
	if (type)
	test_printf_stderr("(%s) ", type);
	if (op != NULL)
	test_printf_stderr("'%s %s %s' failed", left, op, right);
	if (file != NULL) {
	test_printf_stderr(" @ %s:%d", file, line);
	}
	test_printf_stderr("\n");
	}

	/* Output a diff header */
	static void test_diff_header(const char left, const char right)
	{
	test_printf_stderr("%*s# --- %s\n", subtest_level(), "", left);
	test_printf_stderr("%*s# +++ %s\n", subtest_level(), "", right);
	}

	/*
	* A common routine to output test failure messages. Generally this should not
	* be called directly, rather it should be called by the following functions.
	*
	* \|desc\| is a printf formatted description with arguments \|args\| that is
	* supplied by the user and \|desc\| can be NULL. \|type\| is the data type
	* that was tested (int, char, ptr, ...). \|fmt\| is a system provided
	* printf format with following arguments that spell out the failure
	* details i.e. the actual values compared and the operator used.
	*
	* The typical use for this is from an utility test function:
	*
	* int test6(const char *file, int line, int n) {
	* if (n != 6) {
	* test_fail_message(1, file, line, "int", "value %d is not %d", n, 6);
	* return 0;
	* }
	* return 1;
	* }
	*
	* calling test6(3, "oops") will return 0 and produce out along the lines of:
	* FAIL oops: (int) value 3 is not 6\n
	*/
	static void test_fail_message(const char prefix, const char file, int line,
	const char type, const char left,
	const char right, const char op,
	const char *fmt, ...)
	PRINTF_FORMAT(8, 9);

	static void test_fail_message_va(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char op, const char fmt, va_list ap)
	{
	test_fail_message_prefix(prefix, file, line, type, left, right, op);
	if (fmt != NULL) {
	test_printf_stderr("%*s# ", subtest_level(), "");
	test_vprintf_stderr(fmt, ap);
	test_printf_stderr("\n");
	}
	test_printf_stderr("\n");
	test_flush_stderr();
	}

	static void test_string_null_empty(const char *m, int indent, char c)
	{
	if (m == NULL)
	test_printf_stderr("%*s# % 4s %c NULL\n", indent, "", "", c);
	else
	test_printf_stderr("%*s# % 4u:%c ''\n", indent, "", 0u, c);
	}

	static void test_fail_string_message(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char op, const char m1, size_t l1,
	const char *m2, size_t l2)
	{
	const int indent = subtest_level();
	const size_t width = (MAX_STRING_WIDTH - indent - 12) / 16 * 16;
	char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
	char bdiff[MAX_STRING_WIDTH + 1];
	size_t n1, n2, i;
	unsigned int cnt = 0, diff;

	test_fail_message_prefix(prefix, file, line, type, left, right, op);
	if (m1 == NULL)
	l1 = 0;
	if (m2 == NULL)
	l2 = 0;
	if (l1 == 0 && l2 == 0) {
	if ((m1 == NULL) == (m2 == NULL)) {
	test_string_null_empty(m1, indent, ' ');
	} else {
	test_diff_header(left, right);
	test_string_null_empty(m1, indent, '-');
	test_string_null_empty(m2, indent, '+');
	}
	goto fin;
	}

	if (l1 != l2 \|\| strcmp(m1, m2) != 0)
	test_diff_header(left, right);

	while (l1 > 0 \|\| l2 > 0) {
	n1 = n2 = 0;
	if (l1 > 0) {
	b1[n1 = l1 > width ? width : l1] = 0;
	for (i = 0; i < n1; i++)
	b1[i] = isprint(m1[i]) ? m1[i] : '.';
	}
	if (l2 > 0) {
	b2[n2 = l2 > width ? width : l2] = 0;
	for (i = 0; i < n2; i++)
	b2[i] = isprint(m2[i]) ? m2[i] : '.';
	}
	diff = 0;
	i = 0;
	if (n1 > 0 && n2 > 0) {
	const size_t j = n1 < n2 ? n1 : n2;

	for (; i < j; i++)
	if (m1[i] == m2[i]) {
	bdiff[i] = ' ';
	} else {
	bdiff[i] = '^';
	diff = 1;
	}
	bdiff[i] = '\0';
	}
	if (n1 == n2 && !diff) {
	test_printf_stderr("%*s# % 4u: '%s'\n", indent, "", cnt,
	n2 > n1 ? b2 : b1);
	} else {
	if (cnt == 0 && (m1 == NULL \|\| *m1 == '\0'))
	test_string_null_empty(m1, indent, '-');
	else if (n1 > 0)
	test_printf_stderr("%*s# % 4u:- '%s'\n", indent, "", cnt, b1);
	if (cnt == 0 && (m2 == NULL \|\| *m2 == '\0'))
	test_string_null_empty(m2, indent, '+');
	else if (n2 > 0)
	test_printf_stderr("%*s# % 4u:+ '%s'\n", indent, "", cnt, b2);
	if (diff && i > 0)
	test_printf_stderr("%*s# % 4s %s\n", indent, "", "", bdiff);
	}
	m1 += n1;
	m2 += n2;
	l1 -= n1;
	l2 -= n2;
	cnt += width;
	}
	fin:
	test_printf_stderr("\n");
	test_flush_stderr();
	}

	static void hex_convert_memory(const unsigned char m, size_t n, char b,
	size_t width)
	{
	size_t i;

	for (i = 0; i < n; i++) {
	const unsigned char c = *m++;

	*b++ = "0123456789abcdef"[c >> 4];
	*b++ = "0123456789abcdef"[c & 15];
	if (i % width == width - 1 && i != n - 1)
	*b++ = ' ';
	}
	*b = '\0';
	}

	static const int bn_bytes = (MAX_STRING_WIDTH - 9) / (BN_OUTPUT_SIZE * 2 + 1)
	* BN_OUTPUT_SIZE;
	static const int bn_chars = (MAX_STRING_WIDTH - 9) / (BN_OUTPUT_SIZE * 2 + 1)
	* (BN_OUTPUT_SIZE * 2 + 1) - 1;

	static void test_bignum_header_line(void)
	{
	test_printf_stderr("%s# %s\n", subtest_level(), "", bn_chars + 6,
	"bit position");
	}

	static void test_bignum_zero_print(const BIGNUM *bn, char sep)
	{
	const char v = "NULL", suf = "";
	if (bn != NULL) {
	suf = ": 0";
	v = BN_is_negative(bn) ? "-0" : "0";
	}
	test_printf_stderr("%s# %c%s%s\n", subtest_level(), "", sep, bn_chars,
	v, suf);
	}

	static int convert_bn_memory(const unsigned char *in, size_t bytes,
	char out, int lz, const BIGNUM *bn)
	{
	int n = bytes * 2, i;
	char p = out, q = NULL;

	if (bn != NULL && !BN_is_zero(bn)) {
	hex_convert_memory(in, bytes, out, BN_OUTPUT_SIZE);
	if (*lz) {
	for (; p == '0' \|\| p == ' '; p++)
	if (*p == '0') {
	q = p;
	*p = ' ';
	n--;
	}
	if (*p == '\0') {
	/*
	* in[bytes] is defined because we're converting a non-zero
	* number and we've not seen a non-zero yet.
	*/
	if ((in[bytes] & 0xf0) != 0 && BN_is_negative(bn)) {
	*lz = 0;
	*q = '-';
	n++;
	}
	} else {
	*lz = 0;
	if (BN_is_negative(bn)) {
	/*
	* This is valid because we always convert more digits than
	* the number holds.
	*/
	*q = '-';
	n++;
	}
	}
	}
	return n;
	}

	for (i = 0; i < n; i++) {
	*p++ = ' ';
	if (i % (2 * BN_OUTPUT_SIZE) == 2 * BN_OUTPUT_SIZE - 1 && i != n - 1)
	*p++ = ' ';
	}
	*p = '\0';
	if (bn == NULL)
	q = "NULL";
	else
	q = BN_is_negative(bn) ? "-0" : "0";
	strcpy(p - strlen(q), q);
	return 0;
	}

	static void test_fail_bignum_common(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char *op,
	const BIGNUM bn1, const BIGNUM bn2)
	{
	const int indent = subtest_level();
	const size_t bytes = bn_bytes;
	char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
	char *p, bdiff[MAX_STRING_WIDTH + 1];
	size_t l1, l2, n1, n2, i, len;
	unsigned int cnt, diff, real_diff;
	unsigned char m1 = NULL, m2 = NULL;
	int lz1 = 1, lz2 = 1;
	unsigned char buffer[MEM_BUFFER_SIZE * 2], *bufp = buffer;

	l1 = bn1 == NULL ? 0 : (BN_num_bytes(bn1) + (BN_is_negative(bn1) ? 1 : 0));
	l2 = bn2 == NULL ? 0 : (BN_num_bytes(bn2) + (BN_is_negative(bn2) ? 1 : 0));
	if (l1 == 0 && l2 == 0) {
	if ((bn1 == NULL) == (bn2 == NULL)) {
	test_bignum_header_line();
	test_bignum_zero_print(bn1, ' ');
	} else {
	test_diff_header(left, right);
	test_bignum_header_line();
	test_bignum_zero_print(bn1, '-');
	test_bignum_zero_print(bn2, '+');
	}
	goto fin;
	}

	if (l1 != l2 \|\| bn1 == NULL \|\| bn2 == NULL \|\| BN_cmp(bn1, bn2) != 0)
	test_diff_header(left, right);
	test_bignum_header_line();

	len = ((l1 > l2 ? l1 : l2) + bytes - 1) / bytes * bytes;

	if (len > MEM_BUFFER_SIZE && (bufp = OPENSSL_malloc(len * 2)) == NULL) {
	bufp = buffer;
	len = MEM_BUFFER_SIZE;
	test_printf_stderr("%*s# WARNING: these BIGNUMs have been truncated",
	indent, "");
	}

	if (bn1 != NULL) {
	m1 = bufp;
	BN_bn2binpad(bn1, m1, len);
	}
	if (bn2 != NULL) {
	m2 = bufp + len;
	BN_bn2binpad(bn2, m2, len);
	}

	while (len > 0) {
	cnt = 8 * (len - bytes);
	n1 = convert_bn_memory(m1, bytes, b1, &lz1, bn1);
	n2 = convert_bn_memory(m2, bytes, b2, &lz2, bn2);

	diff = real_diff = 0;
	i = 0;
	p = bdiff;
	for (i=0; b1[i] != '\0'; i++)
	if (b1[i] == b2[i] \|\| b1[i] == ' ' \|\| b2[i] == ' ') {
	*p++ = ' ';
	diff \|= b1[i] != b2[i];
	} else {
	*p++ = '^';
	real_diff = diff = 1;
	}
	*p++ = '\0';
	if (!diff) {
	test_printf_stderr("%*s# %s:% 5d\n", indent, "",
	n2 > n1 ? b2 : b1, cnt);
	} else {
	if (cnt == 0 && bn1 == NULL)
	test_printf_stderr("%*s# -%s\n", indent, "", b1);
	else if (cnt == 0 \|\| n1 > 0)
	test_printf_stderr("%*s# -%s:% 5d\n", indent, "", b1, cnt);
	if (cnt == 0 && bn2 == NULL)
	test_printf_stderr("%*s# +%s\n", indent, "", b2);
	else if (cnt == 0 \|\| n2 > 0)
	test_printf_stderr("%*s# +%s:% 5d\n", indent, "", b2, cnt);
	if (real_diff && (cnt == 0 \|\| (n1 > 0 && n2 > 0))
	&& bn1 != NULL && bn2 != NULL)
	test_printf_stderr("%*s# %s\n", indent, "", bdiff);
	}
	if (m1 != NULL)
	m1 += bytes;
	if (m2 != NULL)
	m2 += bytes;
	len -= bytes;
	}
	fin:
	test_printf_stderr("\n");
	test_flush_stderr();
	if (bufp != buffer)
	OPENSSL_free(bufp);
	}

	static void test_fail_bignum_message(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char *op,
	const BIGNUM bn1, const BIGNUM bn2)
	{
	test_fail_message_prefix(prefix, file, line, type, left, right, op);
	test_fail_bignum_common(prefix, file, line, type, left, right, op, bn1, bn2);
	}

	static void test_fail_bignum_mono_message(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char op, const BIGNUM bn)
	{
	test_fail_message_prefix(prefix, file, line, type, left, right, op);
	test_fail_bignum_common(prefix, file, line, type, left, right, op, bn, bn);
	}

	static void test_memory_null_empty(const unsigned char *m, int indent, char c)
	{
	if (m == NULL)
	test_printf_stderr("%*s# % 4s %c%s\n", indent, "", "", c, "NULL");
	else
	test_printf_stderr("%*s# %04x %c%s\n", indent, "", 0u, c, "empty");
	}

	static void test_fail_memory_message(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char *op,
	const unsigned char *m1, size_t l1,
	const unsigned char *m2, size_t l2)
	{
	const int indent = subtest_level();
	const size_t bytes = (MAX_STRING_WIDTH - 9) / 17 * 8;
	char b1[MAX_STRING_WIDTH + 1], b2[MAX_STRING_WIDTH + 1];
	char *p, bdiff[MAX_STRING_WIDTH + 1];
	size_t n1, n2, i;
	unsigned int cnt = 0, diff;

	test_fail_message_prefix(prefix, file, line, type, left, right, op);
	if (m1 == NULL)
	l1 = 0;
	if (m2 == NULL)
	l2 = 0;
	if (l1 == 0 && l2 == 0) {
	if ((m1 == NULL) == (m2 == NULL)) {
	test_memory_null_empty(m1, indent, ' ');
	} else {
	test_diff_header(left, right);
	test_memory_null_empty(m1, indent, '-');
	test_memory_null_empty(m2, indent, '+');
	}
	goto fin;
	}

	if (l1 != l2 \|\| memcmp(m1, m2, l1) != 0)
	test_diff_header(left, right);

	while (l1 > 0 \|\| l2 > 0) {
	n1 = n2 = 0;
	if (l1 > 0) {
	n1 = l1 > bytes ? bytes : l1;
	hex_convert_memory(m1, n1, b1, 8);
	}
	if (l2 > 0) {
	n2 = l2 > bytes ? bytes : l2;
	hex_convert_memory(m2, n2, b2, 8);
	}

	diff = 0;
	i = 0;
	p = bdiff;
	if (n1 > 0 && n2 > 0) {
	const size_t j = n1 < n2 ? n1 : n2;

	for (; i < j; i++) {
	if (m1[i] == m2[i]) {
	*p++ = ' ';
	*p++ = ' ';
	} else {
	*p++ = '^';
	*p++ = '^';
	diff = 1;
	}
	if (i % 8 == 7 && i != j - 1)
	*p++ = ' ';
	}
	*p++ = '\0';
	}

	if (n1 == n2 && !diff) {
	test_printf_stderr("%*s# %04x: %s\n", indent, "", cnt, b1);
	} else {
	if (cnt == 0 && (m1 == NULL \|\| l1 == 0))
	test_memory_null_empty(m1, indent, '-');
	else if (n1 > 0)
	test_printf_stderr("%*s# %04x:-%s\n", indent, "", cnt, b1);
	if (cnt == 0 && (m2 == NULL \|\| l2 == 0))
	test_memory_null_empty(m2, indent, '+');
	else if (n2 > 0)
	test_printf_stderr("%*s# %04x:+%s\n", indent, "", cnt, b2);
	if (diff && i > 0)
	test_printf_stderr("%*s# % 4s %s\n", indent, "", "", bdiff);
	}
	m1 += n1;
	m2 += n2;
	l1 -= n1;
	l2 -= n2;
	cnt += bytes;
	}
	fin:
	test_printf_stderr("\n");
	test_flush_stderr();
	}

	static void test_fail_message(const char prefix, const char file,
	int line, const char *type,
	const char left, const char right,
	const char op, const char fmt, ...)
	{
	va_list ap;

	va_start(ap, fmt);
	test_fail_message_va(prefix, file, line, type, left, right, op, fmt, ap);
	va_end(ap);
	}

	void test_info_c90(const char *desc, ...)
	{
	va_list ap;

	va_start(ap, desc);
	test_fail_message_va("INFO", NULL, -1, NULL, NULL, NULL, NULL, desc, ap);
	va_end(ap);
	}

	void test_info(const char file, int line, const char desc, ...)
	{
	va_list ap;

	va_start(ap, desc);
	test_fail_message_va("INFO", file, line, NULL, NULL, NULL, NULL, desc, ap);
	va_end(ap);
	}

	void test_error_c90(const char *desc, ...)
	{
	va_list ap;

	va_start(ap, desc);
	test_fail_message_va(NULL, NULL, -1, NULL, NULL, NULL, NULL, desc, ap);
	va_end(ap);
	}

	void test_error(const char file, int line, const char desc, ...)
	{
	va_list ap;

	va_start(ap, desc);
	test_fail_message_va(NULL, file, line, NULL, NULL, NULL, NULL, desc, ap);
	va_end(ap);
	}

	void test_openssl_errors(void)
	{
	ERR_print_errors_cb(openssl_error_cb, NULL);
	}

	/*
	* Define some comparisons between pairs of various types.
	* These functions return 1 if the test is true.
	* Otherwise, they return 0 and pretty-print diagnostics.
	*
	* In each case the functions produced are:
	* int test_name_eq(const type t1, const type t2, const char *desc, ...);
	* int test_name_ne(const type t1, const type t2, const char *desc, ...);
	* int test_name_lt(const type t1, const type t2, const char *desc, ...);
	* int test_name_le(const type t1, const type t2, const char *desc, ...);
	* int test_name_gt(const type t1, const type t2, const char *desc, ...);
	* int test_name_ge(const type t1, const type t2, const char *desc, ...);
	*
	* The t1 and t2 arguments are to be compared for equality, inequality,
	* less than, less than or equal to, greater than and greater than or
	* equal to respectively. If the specified condition holds, the functions
	* return 1. If the condition does not hold, the functions print a diagnostic
	* message and return 0.
	*
	* The desc argument is a printf format string followed by its arguments and
	* this is included in the output if the condition being tested for is false.
	*/
	#define DEFINE_COMPARISON(type, name, opname, op, fmt) \
	int test_ ## name ## _ ## opname(const char *file, int line, \
	const char s1, const char s2, \
	const type t1, const type t2) \
	{ \
	if (t1 op t2) \
	return 1; \
	test_fail_message(NULL, file, line, #type, s1, s2, #op, \
	"[" fmt "] compared to [" fmt "]", \
	t1, t2); \
	return 0; \
	}

	#define DEFINE_COMPARISONS(type, name, fmt) \
	DEFINE_COMPARISON(type, name, eq, ==, fmt) \
	DEFINE_COMPARISON(type, name, ne, !=, fmt) \
	DEFINE_COMPARISON(type, name, lt, <, fmt) \
	DEFINE_COMPARISON(type, name, le, <=, fmt) \
	DEFINE_COMPARISON(type, name, gt, >, fmt) \
	DEFINE_COMPARISON(type, name, ge, >=, fmt)

	DEFINE_COMPARISONS(int, int, "%d")
	DEFINE_COMPARISONS(unsigned int, uint, "%u")
	DEFINE_COMPARISONS(char, char, "%c")
	DEFINE_COMPARISONS(unsigned char, uchar, "%u")
	DEFINE_COMPARISONS(long, long, "%ld")
	DEFINE_COMPARISONS(unsigned long, ulong, "%lu")
	DEFINE_COMPARISONS(size_t, size_t, "%zu")

	DEFINE_COMPARISON(void *, ptr, eq, ==, "%p")
	DEFINE_COMPARISON(void *, ptr, ne, !=, "%p")

	int test_ptr_null(const char file, int line, const char s, const void *p)
	{
	if (p == NULL)
	return 1;
	test_fail_message(NULL, file, line, "ptr", s, "NULL", "==", "%p", p);
	return 0;
	}

	int test_ptr(const char file, int line, const char s, const void *p)
	{
	if (p != NULL)
	return 1;
	test_fail_message(NULL, file, line, "ptr", s, "NULL", "!=", "%p", p);
	return 0;
	}

	int test_true(const char file, int line, const char s, int b)
	{
	if (b)
	return 1;
	test_fail_message(NULL, file, line, "bool", s, "true", "==", "false");
	return 0;
	}

	int test_false(const char file, int line, const char s, int b)
	{
	if (!b)
	return 1;
	test_fail_message(NULL, file, line, "bool", s, "false", "==", "true");
	return 0;
	}

	int test_str_eq(const char file, int line, const char st1, const char *st2,
	const char s1, const char s2)
	{
	if (s1 == NULL && s2 == NULL)
	return 1;
	if (s1 == NULL \|\| s2 == NULL \|\| strcmp(s1, s2) != 0) {
	test_fail_string_message(NULL, file, line, "string", st1, st2, "==",
	s1, s1 == NULL ? 0 : strlen(s1),
	s2, s2 == NULL ? 0 : strlen(s2));
	return 0;
	}
	return 1;
	}

	int test_str_ne(const char file, int line, const char st1, const char *st2,
	const char s1, const char s2)
	{
	if ((s1 == NULL) ^ (s2 == NULL))
	return 1;
	if (s1 == NULL \|\| strcmp(s1, s2) == 0) {
	test_fail_string_message(NULL, file, line, "string", st1, st2, "!=",
	s1, s1 == NULL ? 0 : strlen(s1),
	s2, s2 == NULL ? 0 : strlen(s2));
	return 0;
	}
	return 1;
	}

	int test_strn_eq(const char file, int line, const char st1, const char *st2,
	const char s1, const char s2, size_t len)
	{
	if (s1 == NULL && s2 == NULL)
	return 1;
	if (s1 == NULL \|\| s2 == NULL \|\| strncmp(s1, s2, len) != 0) {
	test_fail_string_message(NULL, file, line, "string", st1, st2, "==",
	s1, s1 == NULL ? 0 : OPENSSL_strnlen(s1, len),
	s2, s2 == NULL ? 0 : OPENSSL_strnlen(s2, len));
	return 0;
	}
	return 1;
	}

	int test_strn_ne(const char file, int line, const char st1, const char *st2,
	const char s1, const char s2, size_t len)
	{
	if ((s1 == NULL) ^ (s2 == NULL))
	return 1;
	if (s1 == NULL \|\| strncmp(s1, s2, len) == 0) {
	test_fail_string_message(NULL, file, line, "string", st1, st2, "!=",
	s1, s1 == NULL ? 0 : OPENSSL_strnlen(s1, len),
	s2, s2 == NULL ? 0 : OPENSSL_strnlen(s2, len));
	return 0;
	}
	return 1;
	}

	int test_mem_eq(const char file, int line, const char st1, const char *st2,
	const void s1, size_t n1, const void s2, size_t n2)
	{
	if (s1 == NULL && s2 == NULL)
	return 1;
	if (n1 != n2 \|\| s1 == NULL \|\| s2 == NULL \|\| memcmp(s1, s2, n1) != 0) {
	test_fail_memory_message(NULL, file, line, "memory", st1, st2, "==",
	s1, n1, s2, n2);
	return 0;
	}
	return 1;
	}

	int test_mem_ne(const char file, int line, const char st1, const char *st2,
	const void s1, size_t n1, const void s2, size_t n2)
	{
	if ((s1 == NULL) ^ (s2 == NULL))
	return 1;
	if (n1 != n2)
	return 1;
	if (s1 == NULL \|\| memcmp(s1, s2, n1) == 0) {
	test_fail_memory_message(NULL, file, line, "memory", st1, st2, "!=",
	s1, n1, s2, n2);
	return 0;
	}
	return 1;
	}

	#define DEFINE_BN_COMPARISONS(opname, op, zero_cond) \
	int test_BN_ ## opname(const char *file, int line, \
	const char s1, const char s2, \
	const BIGNUM t1, const BIGNUM t2) \
	{ \
	if (BN_cmp(t1, t2) op 0) \
	return 1; \
	test_fail_bignum_message(NULL, file, line, "BIGNUM", s1, s2, \
	#op, t1, t2); \
	return 0; \
	} \
	int test_BN_ ## opname ## _zero(const char *file, int line, \
	const char s, const BIGNUM a) \
	{ \
	if (a != NULL &&(zero_cond)) \
	return 1; \
	test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", \
	s, "0", #op, a); \
	return 0; \
	}

	DEFINE_BN_COMPARISONS(eq, ==, BN_is_zero(a))
	DEFINE_BN_COMPARISONS(ne, !=, !BN_is_zero(a))
	DEFINE_BN_COMPARISONS(gt, >, !BN_is_negative(a) && !BN_is_zero(a))
	DEFINE_BN_COMPARISONS(ge, >=, !BN_is_negative(a) \|\| BN_is_zero(a))
	DEFINE_BN_COMPARISONS(lt, <, BN_is_negative(a) && !BN_is_zero(a))
	DEFINE_BN_COMPARISONS(le, <=, BN_is_negative(a) \|\| BN_is_zero(a))

	int test_BN_eq_one(const char file, int line, const char s, const BIGNUM *a)
	{
	if (a != NULL && BN_is_one(a))
	return 1;
	test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", s, "1", "==", a);
	return 0;
	}

	int test_BN_odd(const char file, int line, const char s, const BIGNUM *a)
	{
	if (a != NULL && BN_is_odd(a))
	return 1;
	test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", "ODD(", ")", s, a);
	return 0;
	}

	int test_BN_even(const char file, int line, const char s, const BIGNUM *a)
	{
	if (a != NULL && !BN_is_odd(a))
	return 1;
	test_fail_bignum_mono_message(NULL, file, line, "BIGNUM", "EVEN(", ")", s,
	a);
	return 0;
	}

	int test_BN_eq_word(const char file, int line, const char bns, const char *ws,
	const BIGNUM *a, BN_ULONG w)
	{
	BIGNUM *bw;

	if (a != NULL && BN_is_word(a, w))
	return 1;
	bw = BN_new();
	BN_set_word(bw, w);
	test_fail_bignum_message(NULL, file, line, "BIGNUM", bns, ws, "==", a, bw);
	BN_free(bw);
	return 0;
	}

	int test_BN_abs_eq_word(const char file, int line, const char bns,
	const char ws, const BIGNUM a, BN_ULONG w)
	{
	BIGNUM bw, aa;

	if (a != NULL && BN_abs_is_word(a, w))
	return 1;
	bw = BN_new();
	aa = BN_dup(a);
	BN_set_negative(aa, 0);
	BN_set_word(bw, w);
	test_fail_bignum_message(NULL, file, line, "BIGNUM", bns, ws, "abs==",
	aa, bw);
	BN_free(bw);
	BN_free(aa);
	return 0;
	}