maint/gnulib/tests/macros.h

/* */
   1 /* Common macros used by gnulib tests.
   2    Copyright (C) 2006-2021 Free Software Foundation, Inc.
   3 
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8 
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13 
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16 
  17 
  18 /* This file contains macros that are used by many gnulib tests.
  19    Put here only frequently used macros, say, used by 10 tests or more.  */
  20 
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 
  24 #ifndef FALLTHROUGH
  25 # if (__GNUC__ >= 7) || (__clang_major__ >= 10)
  26 #  define FALLTHROUGH __attribute__ ((__fallthrough__))
  27 # else
  28 #  define FALLTHROUGH ((void) 0)
  29 # endif
  30 #endif
  31 
  32 /* Define ASSERT_STREAM before including this file if ASSERT must
  33    target a stream other than stderr.  */
  34 #ifndef ASSERT_STREAM
  35 # define ASSERT_STREAM stderr
  36 #endif
  37 
  38 /* ASSERT (condition);
  39    verifies that the specified condition is fulfilled.  If not, a message
  40    is printed to ASSERT_STREAM if defined (defaulting to stderr if
  41    undefined) and the program is terminated with an error code.
  42 
  43    This macro has the following properties:
  44      - The programmer specifies the expected condition, not the failure
  45        condition.  This simplifies thinking.
  46      - The condition is tested always, regardless of compilation flags.
  47        (Unlike the macro from <assert.h>.)
  48      - On Unix platforms, the tester can debug the test program with a
  49        debugger (provided core dumps are enabled: "ulimit -c unlimited").
  50      - For the sake of platforms where no debugger is available (such as
  51        some mingw systems), an error message is printed on the error
  52        stream that includes the source location of the ASSERT invocation.
  53  */
  54 #define ASSERT(expr) \
  55   do                                                                         \
  56     {                                                                        \
  57       if (!(expr))                                                           \
  58         {                                                                    \
  59           fprintf (ASSERT_STREAM, "%s:%d: assertion '%s' failed\n",          \
  60                    __FILE__, __LINE__, #expr);                               \
  61           fflush (ASSERT_STREAM);                                            \
  62           abort ();                                                          \
  63         }                                                                    \
  64     }                                                                        \
  65   while (0)
  66 
  67 /* Like ASSERT, except that it uses no stdio.
  68    Requires #include <string.h> and #include <unistd.h>.  */
  69 #define ASSERT_NO_STDIO(expr) \
  70   do                                                        \
  71     {                                                       \
  72       if (!(expr))                                          \
  73         {                                                   \
  74           WRITE_TO_STDERR (__FILE__);                       \
  75           WRITE_TO_STDERR (":");                            \
  76           WRITE_MACROEXPANDED_INTEGER_TO_STDERR (__LINE__); \
  77           WRITE_TO_STDERR (": assertion '");                \
  78           WRITE_TO_STDERR (#expr);                          \
  79           WRITE_TO_STDERR ("' failed\n");                   \
  80           abort ();                                         \
  81         }                                                   \
  82     }                                                       \
  83   while (0)
  84 #define WRITE_MACROEXPANDED_INTEGER_TO_STDERR(integer) \
  85   WRITE_INTEGER_TO_STDERR(integer)
  86 #define WRITE_INTEGER_TO_STDERR(integer) \
  87   WRITE_TO_STDERR (#integer)
  88 #define WRITE_TO_STDERR(string_literal) \
  89   {                                     \
  90     const char *s = string_literal;     \
  91     int ret = write (2, s, strlen (s)); \
  92     (void) ret;                         \
  93   }
  94 
  95 /* SIZEOF (array)
  96    returns the number of elements of an array.  It works for arrays that are
  97    declared outside functions and for local variables of array type.  It does
  98    *not* work for function parameters of array type, because they are actually
  99    parameters of pointer type.  */
 100 #define SIZEOF(array) (sizeof (array) / sizeof (array[0]))
 101 
 102 /* STREQ (str1, str2)
 103    Return true if two strings compare equal.  */
 104 #define STREQ(a, b) (strcmp (a, b) == 0)
 105 
 106 /* Some numbers in the interval [0,1).  */
 107 extern const float randomf[1000];
 108 extern const double randomd[1000];
 109 extern const long double randoml[1000];
/* */
root/maint/gnulib/tests/macros.h

INCLUDED FROM
