tests/test-error.c

   1 /* Test of error.h functions.
   2    Copyright (C) 2023-2024 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 /* Specification.  */
  22 #include <error.h>
  23
  24 #include <errno.h>
  25
  26 #include "macros.h"
  27
  28 /* Custom function to not show the program name in error messages.  */
  29 static void
  30 print_no_progname (void)
  31 {
  32 }
  33
  34 int
  35 main ()
  36 {
  37   /* Test error() function with zero STATUS and zero ERRNUM.  */
  38   error (0, 0, "bummer");
  39   /* With format string arguments.  */
  40   errno = EINVAL; /* should be ignored */
  41   error (0, 0, "Zonk %d%d%d is too large", 1, 2, 3);
  42   /* With non-ASCII characters.  */
  43   error (0, 0, "Pokémon started");
  44   /* Verify error_message_count.  */
  45   ASSERT (error_message_count == 3);
  46
  47   /* Test error_at_line() function with zero STATUS and zero ERRNUM.  */
  48   error_at_line (0, 0, "d1/foo.c", 10, "invalid blub");
  49   error_at_line (0, 0, "d1/foo.c", 10, "invalid blarn");
  50   /* Verify error_message_count.  */
  51   ASSERT (error_message_count == 5);
  52
  53   /* Test error_one_per_line.  */
  54   error_one_per_line = 1;
  55   error_at_line (0, 0, "d1/foo.c", 10, "unsupported glink");
  56   /* Another line number.  */
  57   error_at_line (0, 0, "d1/foo.c", 13, "invalid brump");
  58   /* Another file name.  */
  59   error_at_line (0, 0, "d2/foo.c", 13, "unsupported flinge");
  60   /* Same file name and same line number => message not shown.  */
  61   error_at_line (0, 0, "d2/foo.c", 13, "invalid bark");
  62   /* Verify error_message_count.  */
  63   ASSERT (error_message_count == 8);
  64   error_one_per_line = 0;
  65
  66   /* Test error_print_progname.  */
  67   error_print_progname = print_no_progname;
  68   error (0, 0, "hammer");
  69   error (0, 0, "boing %d%d%d is too large", 1, 2, 3);
  70   #if 0
  71   /* The documentation does not describe the output if the file name is NULL. */
  72   error_at_line (0, 0, NULL, 42, "drummer too loud");
  73   #endif
  74   error_at_line (0, 0, "d2/bar.c", 11, "bark too loud");
  75   /* Verify error_message_count.  */
  76   ASSERT (error_message_count == 11);
  77   error_print_progname = NULL;
  78
  79   /* Test error() function with nonzero ERRNUM.  */
  80   errno = EINVAL; /* should be ignored */
  81   error (0, EACCES, "can't steal");
  82   /* Verify error_message_count.  */
  83   ASSERT (error_message_count == 12);
  84
  85   /* Test error() function with nonzero STATUS.  */
  86   error (4, 0, "fatal error");
  87
  88   return test_exit_status;
  89 }