libiberty/testsuite/test-expandargv.c

   1 /* expandargv test program,
   2    Copyright (C) 2006-2017 Free Software Foundation, Inc.
   3    Written by Carlos O'Donell <carlos@codesourcery.com>
   4
   5    This file is part of the libiberty library, which is part of GCC.
   6
   7    This file is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    In addition to the permissions in the GNU General Public License, the
  13    Free Software Foundation gives you unlimited permission to link the
  14    compiled version of this file into combinations with other programs,
  15    and to distribute those combinations without any restriction coming
  16    from the use of this file.  (The General Public License restrictions
  17    do apply in other respects; for example, they cover modification of
  18    the file, and distribution when not linked into a combined
  19    executable.)
  20
  21    This program is distributed in the hope that it will be useful,
  22    but WITHOUT ANY WARRANTY; without even the implied warranty of
  23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24    GNU General Public License for more details.
  25
  26    You should have received a copy of the GNU General Public License
  27    along with this program; if not, write to the Free Software
  28    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  29 */
  30
  31 #ifdef HAVE_CONFIG_H
  32 #include "config.h"
  33 #endif
  34 #include "libiberty.h"
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #ifdef HAVE_STDLIB_H
  38 #include <stdlib.h>
  39 #endif
  40 #ifdef HAVE_STRING_H
  41 #include <string.h>
  42 #endif
  43 #ifdef HAVE_UNISTD_H
  44 #include <unistd.h>
  45 #endif
  46
  47 #ifndef EXIT_SUCCESS
  48 #define EXIT_SUCCESS 0
  49 #endif
  50
  51 #ifndef EXIT_FAILURE
  52 #define EXIT_FAILURE 1
  53 #endif
  54
  55 static void fatal_error (int, const char *, int) ATTRIBUTE_NORETURN;
  56 void writeout_test (int, const char *);
  57 void run_replaces (char *);
  58 void hook_char_replace (char *, size_t, char, char);
  59 int run_tests (const char **);
  60 void erase_test (int);
  61
  62 /* Test input data, argv before, and argv after:
  63
  64    The \n is an important part of test_data since expandargv
  65    may have to work in environments where \n is translated
  66    as \r\n. Thus \n is included in the test data for the file.
  67
  68    We use \b to indicate that the test data is the null character.
  69    This is because we use \0 normally to represent the end of the
  70    file data, so we need something else for this. */
  71
  72 #define FILENAME_PATTERN "test-expandargv-%d.lst"
  73 #define ARGV0 "test-expandargv"
  74
  75 const char *test_data[] = {
  76   /* Test 0 - Check for expansion with \r\n */
  77   "a\r\nb",     /* Test 0 data */
  78   ARGV0,
  79   "@test-expandargv-0.lst",
  80   0, /* End of argv[] before expansion */
  81   ARGV0,
  82   "a",
  83   "b",
  84   0, /* End of argv[] after expansion */
  85
  86   /* Test 1 - Check for expansion with \n */
  87   "a\nb",       /* Test 1 data */
  88   ARGV0,
  89   "@test-expandargv-1.lst",
  90   0,
  91   ARGV0,
  92   "a",
  93   "b",
  94   0,
  95
  96   /* Test 2 - Check for expansion with \0 */
  97   "a\bb",       /* Test 2 data */
  98   ARGV0,
  99   "@test-expandargv-2.lst",
 100   0,
 101   ARGV0,
 102   "a",
 103   0,
 104
 105   /* Test 3 - Check for expansion with only \0 */
 106   "\b",         /* Test 3 data */
 107   ARGV0,
 108   "@test-expandargv-3.lst",
 109   0,
 110   ARGV0,
 111   0,
 112
 113   /* Test 4 - Check for options beginning with an empty line.  */
 114   "\na\nb",     /* Test 4 data */
 115   ARGV0,
 116   "@test-expandargv-4.lst",
 117   0,
 118   ARGV0,
 119   "a",
 120   "b",
 121   0,
 122
 123   /* Test 5 - Check for options containing an empty argument.  */
 124   "a\n''\nb",    /* Test 5 data */
 125   ARGV0,
 126   "@test-expandargv-5.lst",
 127   0,
 128   ARGV0,
 129   "a",
 130   "",
 131   "b",
 132   0,
 133
 134   /* Test 6 - Check for options containing a quoted newline.  */
 135   "a\n'a\n\nb'\nb",    /* Test 6 data */
 136   ARGV0,
 137   "@test-expandargv-6.lst",
 138   0,
 139   ARGV0,
 140   "a",
 141   "a\n\nb",
 142   "b",
 143   0,
 144
 145   0 /* Test done marker, don't remove. */
 146 };
 147
 148 /* Print a fatal error and exit.  LINE is the line number where we
 149    detected the error, ERRMSG is the error message to print, and ERR
 150    is 0 or an errno value to print.  */
 151
 152 static void
 153 fatal_error (int line, const char *errmsg, int err)
 154 {
 155   fprintf (stderr, "test-expandargv:%d: %s", line, errmsg);
 156   if (errno != 0)
 157     fprintf (stderr, ": %s", xstrerror (err));
 158   fprintf (stderr, "\n");
 159   exit (EXIT_FAILURE);
 160 }
 161
 162 /* hook_char_replace:
 163      Replace 'replacethis' with 'withthis' */
 164
 165 void
 166 hook_char_replace (char *string, size_t len, char replacethis, char withthis)
 167 {
 168   int i = 0;
 169   for (i = 0; i < len; i++)
 170     if (string[i] == replacethis)
 171       string[i] = withthis;
 172 }
 173
 174 /* run_replaces:
 175      Hook here all the character for character replaces.
 176      Be warned that expanding the string or contracting the string
 177      should be handled with care. */
 178
 179 void
 180 run_replaces (char * string)
 181 {
 182   /* Store original string size */
 183   size_t len = strlen (string);
 184   hook_char_replace (string, len, '\b', '\0');
 185 }
 186
 187 /* write_test:
 188    Write test datafile */
 189
 190 void
 191 writeout_test (int test, const char * test_data)
 192 {
 193   char filename[256];
 194   FILE *fd;
 195   size_t len, sys_fwrite;
 196   char * parse;
 197
 198   /* Unique filename per test */
 199   sprintf (filename, FILENAME_PATTERN, test);
 200   fd = fopen (filename, "w");
 201   if (fd == NULL)
 202     fatal_error (__LINE__, "Failed to create test file.", errno);
 203
 204   /* Generate RW copy of data for replaces */
 205   len = strlen (test_data);
 206   parse = malloc (sizeof (char) * (len + 1));
 207   if (parse == NULL)
 208     fatal_error (__LINE__, "Failed to malloc parse.", errno);
 209
 210   memcpy (parse, test_data, sizeof (char) * (len + 1));
 211   /* Run all possible replaces */
 212   run_replaces (parse);
 213
 214   sys_fwrite = fwrite (parse, sizeof (char), len, fd);
 215   if (sys_fwrite != len)
 216     fatal_error (__LINE__, "Failed to write to test file.", errno);
 217
 218   free (parse);
 219   fclose (fd);
 220 }
 221
 222 /* erase_test:
 223      Erase the test file */
 224
 225 void
 226 erase_test (int test)
 227 {
 228   char filename[256];
 229   sprintf (filename, FILENAME_PATTERN, test);
 230   if (unlink (filename) != 0)
 231     fatal_error (__LINE__, "Failed to erase test file.", errno);
 232 }
 233
 234
 235 /* run_tests:
 236     Run expandargv
 237     Compare argv before and after.
 238     Return number of fails */
 239
 240 int
 241 run_tests (const char **test_data)
 242 {
 243   int argc_after, argc_before;
 244   char ** argv_before, ** argv_after;
 245   int i, j, k, fails, failed;
 246
 247   i = j = fails = 0;
 248   /* Loop over all the tests */
 249   while (test_data[j])
 250     {
 251       /* Write test data */
 252       writeout_test (i, test_data[j++]);
 253       /* Copy argv before */
 254       argv_before = dupargv ((char **) &test_data[j]);
 255
 256       /* Count argc before/after */
 257       argc_before = 0;
 258       argc_after = 0;
 259       while (test_data[j + argc_before])
 260         argc_before++;
 261       j += argc_before + 1; /* Skip null */
 262       while (test_data[j + argc_after])
 263         argc_after++;
 264
 265       /* Copy argv after */
 266       argv_after = dupargv ((char **) &test_data[j]);
 267
 268       /* Run all possible replaces */
 269       for (k = 0; k < argc_before; k++)
 270         run_replaces (argv_before[k]);
 271       for (k = 0; k < argc_after; k++)
 272         run_replaces (argv_after[k]);
 273
 274       /* Run test: Expand arguments */
 275       expandargv (&argc_before, &argv_before);
 276
 277       failed = 0;
 278       /* Compare size first */
 279       if (argc_before != argc_after)
 280         {
 281           printf ("FAIL: test-expandargv-%d. Number of arguments don't match.\n", i);
 282           failed++;
 283         }
 284       /* Compare each of the argv's ... */
 285       else
 286         for (k = 0; k < argc_after; k++)
 287           if (strcmp (argv_before[k], argv_after[k]) != 0)
 288             {
 289               printf ("FAIL: test-expandargv-%d. Arguments don't match.\n", i);
 290               failed++;
 291             }
 292
 293       if (!failed)
 294         printf ("PASS: test-expandargv-%d.\n", i);
 295       else
 296         fails++;
 297
 298       freeargv (argv_before);
 299       freeargv (argv_after);
 300       /* Advance to next test */
 301       j += argc_after + 1;
 302       /* Erase test file */
 303       erase_test (i);
 304       i++;
 305     }
 306   return fails;
 307 }
 308
 309 /* main:
 310     Run tests.
 311     Check result and exit with appropriate code. */
 312
 313 int
 314 main(int argc, char **argv)
 315 {
 316   int fails;
 317   /* Repeat for all the tests:
 318      - Parse data array and write into file.
 319        - Run replace hooks before writing to file.
 320      - Parse data array and build argv before/after.
 321        - Run replace hooks on argv before/after
 322      - Run expandargv.
 323      - Compare output of expandargv argv to after argv.
 324        - If they compare the same then test passes
 325          else the test fails.
 326      - Erase test file. */
 327
 328   fails = run_tests (test_data);
 329   if (!fails)
 330     exit (EXIT_SUCCESS);
 331   else
 332     exit (EXIT_FAILURE);
 333 }
 334