tests/test-vasnwprintf-gnu.c

   1 /* Test of POSIX and GNU compatible vasnwprintf() and asnwprintf() functions.
   2    Copyright (C) 2007-2025 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 "vasnwprintf.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <wchar.h>
  27
  28 #include "macros.h"
  29
  30 static void
  31 test_function (wchar_t * (*my_asnwprintf) (wchar_t *, size_t *, const wchar_t *, ...))
  32 {
  33   /* Test the support of the 'b' conversion specifier for binary output of
  34      integers.  */
  35
  36   { /* Zero.  */
  37     size_t length;
  38     wchar_t *result =
  39       my_asnwprintf (NULL, &length, L"%b %d", 0, 33, 44, 55);
  40     ASSERT (result != NULL);
  41     ASSERT (wcscmp (result, L"0 33") == 0);
  42     ASSERT (length == wcslen (result));
  43     free (result);
  44   }
  45
  46   { /* A positive number.  */
  47     size_t length;
  48     wchar_t *result =
  49       my_asnwprintf (NULL, &length, L"%b %d", 12345, 33, 44, 55);
  50     ASSERT (result != NULL);
  51     ASSERT (wcscmp (result, L"11000000111001 33") == 0);
  52     ASSERT (length == wcslen (result));
  53     free (result);
  54   }
  55
  56   { /* A large positive number.  */
  57     size_t length;
  58     wchar_t *result =
  59       my_asnwprintf (NULL, &length, L"%b %d", 0xFFFFFFFEU, 33, 44, 55);
  60     ASSERT (result != NULL);
  61     ASSERT (wcscmp (result, L"11111111111111111111111111111110 33") == 0);
  62     ASSERT (length == wcslen (result));
  63     free (result);
  64   }
  65
  66   { /* Width.  */
  67     size_t length;
  68     wchar_t *result =
  69       my_asnwprintf (NULL, &length, L"%20b %d", 12345, 33, 44, 55);
  70     ASSERT (result != NULL);
  71     ASSERT (wcscmp (result, L"      11000000111001 33") == 0);
  72     ASSERT (length == wcslen (result));
  73     free (result);
  74   }
  75
  76   { /* Width given as argument.  */
  77     size_t length;
  78     wchar_t *result =
  79       my_asnwprintf (NULL, &length, L"%*b %d", 20, 12345, 33, 44, 55);
  80     ASSERT (result != NULL);
  81     ASSERT (wcscmp (result, L"      11000000111001 33") == 0);
  82     ASSERT (length == wcslen (result));
  83     free (result);
  84   }
  85
  86   { /* Negative width given as argument (cf. FLAG_LEFT below).  */
  87     size_t length;
  88     wchar_t *result =
  89       my_asnwprintf (NULL, &length, L"%*b %d", -20, 12345, 33, 44, 55);
  90     ASSERT (result != NULL);
  91     ASSERT (wcscmp (result, L"11000000111001       33") == 0);
  92     ASSERT (length == wcslen (result));
  93     free (result);
  94   }
  95
  96   { /* Precision.  */
  97     size_t length;
  98     wchar_t *result =
  99       my_asnwprintf (NULL, &length, L"%.20b %d", 12345, 33, 44, 55);
 100     ASSERT (result != NULL);
 101     ASSERT (wcscmp (result, L"00000011000000111001 33") == 0);
 102     ASSERT (length == wcslen (result));
 103     free (result);
 104   }
 105
 106   { /* Zero precision and a positive number.  */
 107     size_t length;
 108     wchar_t *result =
 109       my_asnwprintf (NULL, &length, L"%.0b %d", 12345, 33, 44, 55);
 110     ASSERT (result != NULL);
 111     ASSERT (wcscmp (result, L"11000000111001 33") == 0);
 112     ASSERT (length == wcslen (result));
 113     free (result);
 114   }
 115
 116   { /* Zero precision and a zero number.  */
 117     size_t length;
 118     wchar_t *result =
 119       my_asnwprintf (NULL, &length, L"%.0b %d", 0, 33, 44, 55);
 120     ASSERT (result != NULL);
 121     /* ISO C and POSIX specify that "The result of converting a zero value
 122        with a precision of zero is no characters."  */
 123     ASSERT (wcscmp (result, L" 33") == 0);
 124     ASSERT (length == wcslen (result));
 125     free (result);
 126   }
 127
 128   { /* Width and precision.  */
 129     size_t length;
 130     wchar_t *result =
 131       my_asnwprintf (NULL, &length, L"%25.20b %d", 12345, 33, 44, 55);
 132     ASSERT (result != NULL);
 133     ASSERT (wcscmp (result, L"     00000011000000111001 33") == 0);
 134     ASSERT (length == wcslen (result));
 135     free (result);
 136   }
 137
 138   { /* Padding and precision.  */
 139     size_t length;
 140     wchar_t *result =
 141       my_asnwprintf (NULL, &length, L"%025.20b %d", 12345, 33, 44, 55);
 142     ASSERT (result != NULL);
 143     /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
 144        a width and a precision are both present.  But implementations do so.  */
 145     ASSERT (wcscmp (result, L"     00000011000000111001 33") == 0);
 146     ASSERT (length == wcslen (result));
 147     free (result);
 148   }
 149
 150   { /* FLAG_LEFT.  */
 151     size_t length;
 152     wchar_t *result =
 153       my_asnwprintf (NULL, &length, L"%-20b %d", 12345, 33, 44, 55);
 154     ASSERT (result != NULL);
 155     ASSERT (wcscmp (result, L"11000000111001       33") == 0);
 156     ASSERT (length == wcslen (result));
 157     free (result);
 158   }
 159
 160   { /* FLAG_ALT with zero.  */
 161     size_t length;
 162     wchar_t *result =
 163       my_asnwprintf (NULL, &length, L"%#b %d", 0, 33, 44, 55);
 164     ASSERT (result != NULL);
 165     ASSERT (wcscmp (result, L"0 33") == 0);
 166     ASSERT (length == wcslen (result));
 167     free (result);
 168   }
 169
 170   { /* FLAG_ALT with a positive number.  */
 171     size_t length;
 172     wchar_t *result =
 173       my_asnwprintf (NULL, &length, L"%#b %d", 12345, 33, 44, 55);
 174     ASSERT (result != NULL);
 175     ASSERT (wcscmp (result, L"0b11000000111001 33") == 0);
 176     ASSERT (length == wcslen (result));
 177     free (result);
 178   }
 179
 180   { /* FLAG_ALT with a positive number and width.  */
 181     size_t length;
 182     wchar_t *result =
 183       my_asnwprintf (NULL, &length, L"%#20b %d", 12345, 33, 44, 55);
 184     ASSERT (result != NULL);
 185     ASSERT (wcscmp (result, L"    0b11000000111001 33") == 0);
 186     ASSERT (length == wcslen (result));
 187     free (result);
 188   }
 189
 190   { /* FLAG_ALT with a positive number and padding.  */
 191     size_t length;
 192     wchar_t *result =
 193       my_asnwprintf (NULL, &length, L"%0#20b %d", 12345, 33, 44, 55);
 194     ASSERT (result != NULL);
 195     ASSERT (wcscmp (result, L"0b000011000000111001 33") == 0);
 196     ASSERT (length == wcslen (result));
 197     free (result);
 198   }
 199
 200   { /* FLAG_ALT with a positive number and precision.  */
 201     size_t length;
 202     wchar_t *result =
 203       my_asnwprintf (NULL, &length, L"%0#.20b %d", 12345, 33, 44, 55);
 204     ASSERT (result != NULL);
 205     ASSERT (wcscmp (result, L"0b00000011000000111001 33") == 0);
 206     ASSERT (length == wcslen (result));
 207     free (result);
 208   }
 209
 210   { /* FLAG_ALT with a positive number and width and precision.  */
 211     size_t length;
 212     wchar_t *result =
 213       my_asnwprintf (NULL, &length, L"%#25.20b %d", 12345, 33, 44, 55);
 214     ASSERT (result != NULL);
 215     ASSERT (wcscmp (result, L"   0b00000011000000111001 33") == 0);
 216     ASSERT (length == wcslen (result));
 217     free (result);
 218   }
 219
 220   { /* FLAG_ALT with a positive number and padding and precision.  */
 221     size_t length;
 222     wchar_t *result =
 223       my_asnwprintf (NULL, &length, L"%0#25.20b %d", 12345, 33, 44, 55);
 224     ASSERT (result != NULL);
 225     /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
 226        a width and a precision are both present.  But implementations do so.  */
 227     ASSERT (wcscmp (result, L"   0b00000011000000111001 33") == 0);
 228     ASSERT (length == wcslen (result));
 229     free (result);
 230   }
 231
 232   { /* FLAG_ALT with a zero precision and a zero number.  */
 233     size_t length;
 234     wchar_t *result =
 235       my_asnwprintf (NULL, &length, L"%#.0b %d", 0, 33, 44, 55);
 236     ASSERT (result != NULL);
 237     /* ISO C and POSIX specify that "The result of converting a zero value
 238        with a precision of zero is no characters.", and the prefix is added
 239        only for non-zero values.  */
 240     ASSERT (wcscmp (result, L" 33") == 0);
 241     ASSERT (length == wcslen (result));
 242     free (result);
 243   }
 244 }
 245
 246 static wchar_t *
 247 my_asnwprintf (wchar_t *resultbuf, size_t *lengthp, const wchar_t *format, ...)
 248 {
 249   va_list args;
 250   wchar_t *ret;
 251
 252   va_start (args, format);
 253   ret = vasnwprintf (resultbuf, lengthp, format, args);
 254   va_end (args);
 255   return ret;
 256 }
 257
 258 static void
 259 test_vasnwprintf ()
 260 {
 261   test_function (my_asnwprintf);
 262 }
 263
 264 static void
 265 test_asnwprintf ()
 266 {
 267   test_function (asnwprintf);
 268 }
 269
 270 int
 271 main (int argc, char *argv[])
 272 {
 273   test_vasnwprintf ();
 274   test_asnwprintf ();
 275   return test_exit_status;
 276 }