tests/test-verror.c

   1 /* Test of verror.h functions.
   2    Copyright (C) 2023-2025 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 /* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
  18
  19 #include <config.h>
  20
  21 #include <error.h>
  22
  23 #include <errno.h>
  24 #include <stdarg.h>
  25
  26 #include <error.h>
  27 #include "macros.h"
  28
  29 /* Custom function to not show the program name in error messages.  */
  30 static void
  31 print_no_progname (void)
  32 {
  33 }
  34
  35 static void
  36 test_zero (const char *format, ...)
  37 {
  38   va_list args;
  39
  40   va_start (args, format);
  41   verror (0, 0, format, args);
  42   va_end (args);
  43 }
  44
  45 static void
  46 test_zero_at_line (const char *filename, unsigned int lineno,
  47                    const char *format, ...)
  48 {
  49   va_list args;
  50
  51   va_start (args, format);
  52   verror_at_line (0, 0, filename, lineno, format, args);
  53   va_end (args);
  54 }
  55
  56 static void
  57 test_errnum (const char *format, ...)
  58 {
  59   va_list args;
  60
  61   va_start (args, format);
  62   verror (0, EACCES, format, args);
  63   va_end (args);
  64 }
  65
  66 static void
  67 test_fatal (const char *format, ...)
  68 {
  69   va_list args;
  70
  71   va_start (args, format);
  72   verror (4, 0, format, args);
  73   va_end (args);
  74 }
  75
  76 int
  77 main (int argc, char *argv[])
  78 {
  79   /* Test verror() function with zero STATUS and zero ERRNUM.  */
  80   test_zero ("bummer");
  81   /* With format string arguments.  */
  82   errno = EINVAL; /* should be ignored */
  83   test_zero ("Zonk %d%d%d is too large", 1, 2, 3);
  84   /* With non-ASCII characters.  */
  85   test_zero ("Pokémon started");
  86   /* Verify error_message_count.  */
  87   ASSERT (error_message_count == 3);
  88
  89   /* Test verror_at_line() function with zero STATUS and zero ERRNUM.  */
  90   test_zero_at_line ("d1/foo.c", 10, "invalid blub");
  91   test_zero_at_line ("d1/foo.c", 10, "invalid blarn");
  92   /* Verify error_message_count.  */
  93   ASSERT (error_message_count == 5);
  94
  95   /* Test error_one_per_line.  */
  96   error_one_per_line = 1;
  97   test_zero_at_line ("d1/foo.c", 10, "unsupported glink");
  98   /* Another line number.  */
  99   test_zero_at_line ("d1/foo.c", 13, "invalid brump");
 100   /* Another file name.  */
 101   test_zero_at_line ("d2/foo.c", 13, "unsupported flinge");
 102   /* Same file name and same line number => message not shown.  */
 103   test_zero_at_line ("d2/foo.c", 13, "invalid bark");
 104   /* Verify error_message_count.  */
 105   ASSERT (error_message_count == 8);
 106   error_one_per_line = 0;
 107
 108   /* Test error_print_progname.  */
 109   error_print_progname = print_no_progname;
 110   test_zero ("hammer");
 111   test_zero ("boing %d%d%d is too large", 1, 2, 3);
 112   #if 0
 113   /* The documentation does not describe the output if the file name is NULL. */
 114   test_zero_at_line (NULL, 42, "drummer too loud");
 115   #endif
 116   test_zero_at_line ("d2/bar.c", 11, "bark too loud");
 117   /* Verify error_message_count.  */
 118   ASSERT (error_message_count == 11);
 119   error_print_progname = NULL;
 120
 121   /* Test verror() function with nonzero ERRNUM.  */
 122   errno = EINVAL; /* should be ignored */
 123   test_errnum ("can't steal");
 124   /* Verify error_message_count.  */
 125   ASSERT (error_message_count == 12);
 126
 127   /* Test verror() function with nonzero STATUS.  */
 128   test_fatal ("fatal error");
 129
 130   return test_exit_status;
 131 }