aboutsummaryrefslogtreecommitdiff
path: root/libiberty/testsuite/test-expandargv.c
blob: 9d1af01454598941576e67123e15c16cc5c2f465 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
/* expandargv test program,
   Copyright (C) 2006 Free Software Foundation, Inc.
   Written by Carlos O'Donell <carlos@codesourcery.com>

   This file is part of the libiberty library, which is part of GCC.

   This file is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   In addition to the permissions in the GNU General Public License, the
   Free Software Foundation gives you unlimited permission to link the
   compiled version of this file into combinations with other programs,
   and to distribute those combinations without any restriction coming
   from the use of this file.  (The General Public License restrictions
   do apply in other respects; for example, they cover modification of
   the file, and distribution when not linked into a combined
   executable.)

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. 
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "libiberty.h"
#include <stdio.h>
#include <errno.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif

#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif

#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif

static void fatal_error (int, const char *, int) ATTRIBUTE_NORETURN;
void writeout_test (int, const char *);
void run_replaces (char *);
void hook_char_replace (char *, size_t, char, char);
int run_tests (const char **);
void erase_test (int);

/* Test input data, argv before, and argv after:
 
   The \n is an important part of test_data since expandargv
   may have to work in environments where \n is translated
   as \r\n. Thus \n is included in the test data for the file. 

   We use \b to indicate that the test data is the null character.
   This is because we use \0 normally to represent the end of the 
   file data, so we need something else for this. */

#define FILENAME_PATTERN "test-expandargv-%d.lst"
#define ARGV0 "test-expandargv"

const char *test_data[] = {
  /* Test 0 - Check for expansion with \r\n */
  "a\r\nb",	/* Test 0 data */
  ARGV0,
  "@test-expandargv-0.lst",
  0, /* End of argv[] before expansion */
  ARGV0,
  "a",
  "b",
  0, /* End of argv[] after expansion */

  /* Test 1 - Check for expansion with \n */
  "a\nb",	/* Test 1 data */
  ARGV0,
  "@test-expandargv-1.lst",
  0,
  ARGV0,
  "a",
  "b",
  0,

  /* Test 2 - Check for expansion with \0 */
  "a\bb",	/* Test 2 data */
  ARGV0,
  "@test-expandargv-2.lst",
  0,
  ARGV0,
  "a",
  0,

  /* Test 3 - Check for expansion with only \0 */
  "\b",		/* Test 3 data */
  ARGV0,
  "@test-expandargv-3.lst",
  0,
  ARGV0,
  0,

  0 /* Test done marker, don't remove. */
};

/* Print a fatal error and exit.  LINE is the line number where we
   detected the error, ERRMSG is the error message to print, and ERR
   is 0 or an errno value to print.  */

static void
fatal_error (int line, const char *errmsg, int err)
{
  fprintf (stderr, "test-expandargv:%d: %s", line, errmsg);
  if (errno != 0)
    fprintf (stderr, ": %s", xstrerror (err));
  fprintf (stderr, "\n");
  exit (EXIT_FAILURE);
}

/* hook_char_replace:
     Replace 'replacethis' with 'withthis' */

void
hook_char_replace (char *string, size_t len, char replacethis, char withthis)
{
  int i = 0;
  for (i = 0; i < len; i++)
    if (string[i] == replacethis)
      string[i] = withthis;
}

/* run_replaces:
     Hook here all the character for character replaces.
     Be warned that expanding the string or contracting the string
     should be handled with care. */

void
run_replaces (char * string)
{
  /* Store original string size */
  size_t len = strlen (string);
  hook_char_replace (string, len, '\b', '\0');
}

/* write_test:
   Write test datafile */

void
writeout_test (int test, const char * test_data)
{
  char filename[256];
  FILE *fd;
  size_t len;
  char * parse;

  /* Unique filename per test */
  sprintf (filename, FILENAME_PATTERN, test);
  fd = fopen (filename, "w");
  if (fd == NULL)
    fatal_error (__LINE__, "Failed to create test file.", errno);

  /* Generate RW copy of data for replaces */
  len = strlen (test_data);
  parse = malloc (sizeof (char) * (len + 1));
  if (parse == NULL)
    fatal_error (__LINE__, "Failed to malloc parse.", errno);
      
  memcpy (parse, test_data, sizeof (char) * len);
  /* Run all possible replaces */
  run_replaces (parse);

  fwrite (parse, len, sizeof (char), fd);
  free (parse);
  fclose (fd);
}

/* erase_test:
     Erase the test file */

void 
erase_test (int test)
{
  char filename[256]; 
  sprintf (filename, FILENAME_PATTERN, test);
  if (unlink (filename) != 0)
    fatal_error (__LINE__, "Failed to erase test file.", errno);
}


/* run_tests:
    Run expandargv
    Compare argv before and after.
    Return number of fails */

int
run_tests (const char **test_data)
{
  int argc_after, argc_before;
  char ** argv_before, ** argv_after;
  int i, j, k, fails, failed;

  i = j = fails = 0;
  /* Loop over all the tests */
  while (test_data[j])
    {
      /* Write test data */
      writeout_test (i, test_data[j++]);
      /* Copy argv before */
      argv_before = dupargv ((char **) &test_data[j]);

      /* Count argc before/after */
      argc_before = 0;
      argc_after = 0;
      while (test_data[j + argc_before])
        argc_before++;
      j += argc_before + 1; /* Skip null */
      while (test_data[j + argc_after])
        argc_after++;

      /* Copy argv after */
      argv_after = dupargv ((char **) &test_data[j]);

      /* Run all possible replaces */
      for (k = 0; k < argc_before; k++)
        run_replaces (argv_before[k]);
      for (k = 0; k < argc_after; k++)
        run_replaces (argv_after[k]);

      /* Run test: Expand arguments */
      expandargv (&argc_before, &argv_before);

      failed = 0;
      /* Compare size first */
      if (argc_before != argc_after)
        {
          printf ("FAIL: test-expandargv-%d. Number of arguments don't match.\n", i);
	  failed++;
        }
      /* Compare each of the argv's ... */
      else
        for (k = 0; k < argc_after; k++)
          if (strncmp (argv_before[k], argv_after[k], strlen(argv_after[k])) != 0)
            {
              printf ("FAIL: test-expandargv-%d. Arguments don't match.\n", i);
              failed++;
            }

      if (!failed)
        printf ("PASS: test-expandargv-%d.\n", i);
      else
        fails++;

      freeargv (argv_before);
      freeargv (argv_after);
      /* Advance to next test */
      j += argc_after + 1;
      /* Erase test file */
      erase_test (i);
      i++;
    }
  return fails;
}

/* main:
    Run tests. 
    Check result and exit with appropriate code. */

int 
main(int argc, char **argv)
{
  int fails;
  /* Repeat for all the tests:
     - Parse data array and write into file.
       - Run replace hooks before writing to file.
     - Parse data array and build argv before/after.
       - Run replace hooks on argv before/after
     - Run expandargv.
     - Compare output of expandargv argv to after argv.
       - If they compare the same then test passes
         else the test fails. 
     - Erase test file. */

  fails = run_tests (test_data);
  if (!fails)
    exit (EXIT_SUCCESS);
  else
    exit (EXIT_FAILURE);
}