gio/tests/data-output-stream.c

   1 /* GLib testing framework examples and tests
   2  * Copyright (C) 2008 Red Hat, Inc.
   3  * Authors: Tomas Bzatek <tbzatek@redhat.com>
   4  *
   5  * This work is provided "as is"; redistribution and modification
   6  * in whole or in part, in any medium, physical or electronic is
   7  * permitted without restriction.
   8  *
   9  * This work 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.
  12  *
  13  * In no event shall the authors or contributors be liable for any
  14  * direct, indirect, incidental, special, exemplary, or consequential
  15  * damages (including, but not limited to, procurement of substitute
  16  * goods or services; loss of use, data, or profits; or business
  17  * interruption) however caused and on any theory of liability, whether
  18  * in contract, strict liability, or tort (including negligence or
  19  * otherwise) arising in any way out of the use of this software, even
  20  * if advised of the possibility of such damage.
  21  */
  22
  23 #include <glib/glib.h>
  24 #include <gio/gio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #define MAX_LINES               0xFFF
  29 #define MAX_LINES_BUFF          0xFFFFFF
  30 #define MAX_BYTES_BINARY        0x100
  31
  32 static void
  33 test_basic (void)
  34 {
  35   GOutputStream *stream;
  36   GOutputStream *base_stream;
  37   gpointer data;
  38   gint val;
  39
  40   data = g_malloc0 (MAX_LINES_BUFF);
  41
  42   /* initialize objects */
  43   base_stream = g_memory_output_stream_new (data, MAX_LINES_BUFF, NULL, NULL);
  44   stream = G_OUTPUT_STREAM (g_data_output_stream_new (base_stream));
  45
  46   g_object_get (stream, "byte-order", &val, NULL);
  47   g_assert_cmpint (val, ==, G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN);
  48   g_object_set (stream, "byte-order", G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN, NULL);
  49   g_assert_cmpint (g_data_output_stream_get_byte_order (G_DATA_OUTPUT_STREAM (stream)), ==, G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN);
  50
  51   g_object_unref (stream);
  52   g_object_unref (base_stream);
  53   g_free (data);
  54 }
  55
  56 static void
  57 test_read_lines (GDataStreamNewlineType newline_type)
  58 {
  59   GOutputStream *stream;
  60   GOutputStream *base_stream;
  61   GError *error = NULL;
  62   gpointer data;
  63   char *lines;
  64   int size;
  65   int i;
  66
  67 #define TEST_STRING     "some_text"
  68
  69   const char* endl[4] = {"\n", "\r", "\r\n", "\n"};
  70
  71
  72   data = g_malloc0 (MAX_LINES_BUFF);
  73   lines = g_malloc0 ((strlen (TEST_STRING) + strlen (endl[newline_type])) * MAX_LINES + 1);
  74
  75   /* initialize objects */
  76   base_stream = g_memory_output_stream_new (data, MAX_LINES_BUFF, NULL, NULL);
  77   stream = G_OUTPUT_STREAM (g_data_output_stream_new (base_stream));
  78
  79
  80   /*  fill data */
  81   for (i = 0; i < MAX_LINES; i++)
  82     {
  83       gboolean res;
  84       char *s = g_strconcat (TEST_STRING, endl[newline_type], NULL);
  85       res = g_data_output_stream_put_string (G_DATA_OUTPUT_STREAM (stream), s, NULL, &error);
  86       g_stpcpy ((char*)(lines + i*strlen(s)), s);
  87       g_assert_no_error (error);
  88       g_assert (res == TRUE);
  89       g_free (s);
  90     }
  91
  92   /*  Byte order testing */
  93   g_data_output_stream_set_byte_order (G_DATA_OUTPUT_STREAM (stream), G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN);
  94   g_assert_cmpint (g_data_output_stream_get_byte_order (G_DATA_OUTPUT_STREAM (stream)), ==, G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN);
  95   g_data_output_stream_set_byte_order (G_DATA_OUTPUT_STREAM (stream), G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN);
  96   g_assert_cmpint (g_data_output_stream_get_byte_order (G_DATA_OUTPUT_STREAM (stream)), ==, G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN);
  97
  98   /*  compare data */
  99   size = strlen (data);
 100   g_assert_cmpint (size, <, MAX_LINES_BUFF);
 101   g_assert_cmpstr ((char*)data, ==, lines);
 102
 103   g_object_unref (base_stream);
 104   g_object_unref (stream);
 105   g_free (data);
 106   g_free (lines);
 107 }
 108
 109 static void
 110 test_read_lines_LF (void)
 111 {
 112   test_read_lines (G_DATA_STREAM_NEWLINE_TYPE_LF);
 113 }
 114
 115 static void
 116 test_read_lines_CR (void)
 117 {
 118   test_read_lines (G_DATA_STREAM_NEWLINE_TYPE_CR);
 119 }
 120
 121 static void
 122 test_read_lines_CR_LF (void)
 123 {
 124   test_read_lines (G_DATA_STREAM_NEWLINE_TYPE_CR_LF);
 125 }
 126
 127 enum TestDataType {
 128   TEST_DATA_BYTE = 0,
 129   TEST_DATA_INT16,
 130   TEST_DATA_UINT16,
 131   TEST_DATA_INT32,
 132   TEST_DATA_UINT32,
 133   TEST_DATA_INT64,
 134   TEST_DATA_UINT64
 135 };
 136
 137 static void
 138 test_data_array (guchar *buffer, gsize len,
 139                  enum TestDataType data_type, GDataStreamByteOrder byte_order)
 140 {
 141   GOutputStream *stream;
 142   GOutputStream *base_stream;
 143   guchar *stream_data;
 144
 145   GError *error = NULL;
 146   guint pos;
 147   GDataStreamByteOrder native;
 148   gboolean swap;
 149   gboolean res;
 150
 151   /*  create objects */
 152   stream_data = g_malloc0 (len);
 153   base_stream = g_memory_output_stream_new (stream_data, len, NULL, NULL);
 154   stream = G_OUTPUT_STREAM (g_data_output_stream_new (base_stream));
 155   g_data_output_stream_set_byte_order (G_DATA_OUTPUT_STREAM (stream), byte_order);
 156
 157   /*  Set flag to swap bytes if needed */
 158   native = (G_BYTE_ORDER == G_BIG_ENDIAN) ? G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN : G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN;
 159   swap = (byte_order != G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN) && (byte_order != native);
 160
 161   /* set len to length of buffer cast to actual type */
 162   switch (data_type)
 163     {
 164     case TEST_DATA_BYTE:
 165       break;
 166     case TEST_DATA_INT16:
 167     case TEST_DATA_UINT16:
 168       g_assert_cmpint (len % 2, ==, 0);
 169     case TEST_DATA_INT32:
 170     case TEST_DATA_UINT32:
 171       g_assert_cmpint (len % 4, ==, 0);
 172     case TEST_DATA_INT64:
 173     case TEST_DATA_UINT64:
 174       g_assert_cmpint (len % 8, ==, 0);
 175       len /= 8;
 176       break;
 177     default:
 178       g_assert_not_reached ();
 179       break;
 180     }
 181
 182   /*  Write data to the file */
 183   for (pos = 0; pos < len; pos++)
 184     {
 185       switch (data_type)
 186         {
 187         case TEST_DATA_BYTE:
 188           res = g_data_output_stream_put_byte (G_DATA_OUTPUT_STREAM (stream), buffer[pos], NULL, &error);
 189           break;
 190         case TEST_DATA_INT16:
 191           res = g_data_output_stream_put_int16 (G_DATA_OUTPUT_STREAM (stream), ((gint16 *) buffer)[pos], NULL, &error);
 192           break;
 193         case TEST_DATA_UINT16:
 194           res = g_data_output_stream_put_uint16 (G_DATA_OUTPUT_STREAM (stream), ((guint16 *) buffer)[pos], NULL, &error);
 195           break;
 196         case TEST_DATA_INT32:
 197           res = g_data_output_stream_put_int32 (G_DATA_OUTPUT_STREAM (stream), ((gint32 *) buffer)[pos], NULL, &error);
 198           break;
 199         case TEST_DATA_UINT32:
 200           res = g_data_output_stream_put_uint32 (G_DATA_OUTPUT_STREAM (stream), ((guint32 *) buffer)[pos], NULL, &error);
 201           break;
 202         case TEST_DATA_INT64:
 203           res = g_data_output_stream_put_int64 (G_DATA_OUTPUT_STREAM (stream), ((gint64 *) buffer)[pos], NULL, &error);
 204           break;
 205         case TEST_DATA_UINT64:
 206           res = g_data_output_stream_put_uint64 (G_DATA_OUTPUT_STREAM (stream), ((guint64 *) buffer)[pos], NULL, &error);
 207           break;
 208         default:
 209           g_assert_not_reached ();
 210           break;
 211         }
 212       g_assert_no_error (error);
 213       g_assert_cmpint (res, ==, TRUE);
 214     }
 215
 216   /*  Compare data back */
 217   for (pos = 0; pos < len; pos++)
 218     {
 219       switch (data_type)
 220         {
 221         case TEST_DATA_BYTE:
 222           /* swapping unnecessary */
 223           g_assert_cmpint (buffer[pos], ==, stream_data[pos]);
 224           break;
 225         case TEST_DATA_UINT16:
 226           if (swap)
 227             g_assert_cmpint (GUINT16_SWAP_LE_BE (((guint16 *) buffer)[pos]), ==, ((guint16 *) stream_data)[pos]);
 228           else
 229             g_assert_cmpint (((guint16 *) buffer)[pos], ==, ((guint16 *) stream_data)[pos]);
 230           break;
 231         case TEST_DATA_INT16:
 232           if (swap)
 233             g_assert_cmpint ((gint16) GUINT16_SWAP_LE_BE (((gint16 *) buffer)[pos]), ==, ((gint16 *) stream_data)[pos]);
 234           else
 235             g_assert_cmpint (((gint16 *) buffer)[pos], ==, ((gint16 *) stream_data)[pos]);
 236           break;
 237         case TEST_DATA_UINT32:
 238           if (swap)
 239             g_assert_cmpint (GUINT32_SWAP_LE_BE (((guint32 *) buffer)[pos]), ==, ((guint32 *) stream_data)[pos]);
 240           else
 241             g_assert_cmpint (((guint32 *) buffer)[pos], ==, ((guint32 *) stream_data)[pos]);
 242           break;
 243         case TEST_DATA_INT32:
 244           if (swap)
 245             g_assert_cmpint ((gint32) GUINT32_SWAP_LE_BE (((gint32 *) buffer)[pos]), ==, ((gint32 *) stream_data)[pos]);
 246           else
 247             g_assert_cmpint (((gint32 *) buffer)[pos], ==, ((gint32 *) stream_data)[pos]);
 248           break;
 249         case TEST_DATA_UINT64:
 250           if (swap)
 251             g_assert_cmpint (GUINT64_SWAP_LE_BE (((guint64 *) buffer)[pos]), ==, ((guint64 *) stream_data)[pos]);
 252           else
 253             g_assert_cmpint (((guint64 *) buffer)[pos], ==, ((guint64 *) stream_data)[pos]);
 254           break;
 255         case TEST_DATA_INT64:
 256           if (swap)
 257             g_assert_cmpint ((gint64) GUINT64_SWAP_LE_BE (((gint64 *) buffer)[pos]), ==, ((gint64 *) stream_data)[pos]);
 258           else
 259             g_assert_cmpint (((gint64 *) buffer)[pos], ==, ((gint64 *) stream_data)[pos]);
 260           break;
 261         default:
 262             g_assert_not_reached ();
 263           break;
 264         }
 265     }
 266
 267   g_object_unref (base_stream);
 268   g_object_unref (stream);
 269   g_free (stream_data);
 270 }
 271
 272 static void
 273 test_read_int (void)
 274 {
 275   GRand *randomizer;
 276   gpointer buffer;
 277   int i;
 278
 279   randomizer = g_rand_new ();
 280   buffer = g_malloc0(MAX_BYTES_BINARY);
 281
 282   /*  Fill in some random data */
 283   for (i = 0; i < MAX_BYTES_BINARY; i++)
 284     {
 285       guchar x = 0;
 286       while (! x)  x = (guchar)g_rand_int (randomizer);
 287       *(guchar*)((guchar*)buffer + sizeof (guchar) * i) = x;
 288     }
 289
 290   for (i = 0; i < 3; i++)
 291     {
 292       int j;
 293       for (j = 0; j <= TEST_DATA_UINT64; j++)
 294         test_data_array (buffer, MAX_BYTES_BINARY, j, i);
 295     }
 296
 297   g_rand_free (randomizer);
 298   g_free (buffer);
 299 }
 300
 301 static void
 302 test_seek (void)
 303 {
 304   GDataOutputStream *stream;
 305   GMemoryOutputStream *base_stream;
 306   GSeekable *seekable;
 307   GError *error;
 308   guchar *stream_data;
 309   gsize len;
 310   gboolean res;
 311
 312   len = 8;
 313
 314   /*  create objects */
 315   stream_data = g_malloc0 (len);
 316   base_stream = G_MEMORY_OUTPUT_STREAM (g_memory_output_stream_new (stream_data, len, NULL, NULL));
 317   stream = g_data_output_stream_new (G_OUTPUT_STREAM (base_stream));
 318   g_data_output_stream_set_byte_order (stream, G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN);
 319   seekable = G_SEEKABLE (stream);
 320   g_assert (!g_seekable_can_truncate (seekable));
 321   error = NULL;
 322
 323   /* Write */
 324   g_assert_cmpint (g_seekable_tell (seekable), ==, 0);
 325   res = g_data_output_stream_put_uint16 (stream, 0x0123, NULL, &error);
 326   g_assert_no_error (error);
 327   g_assert (res);
 328   g_data_output_stream_put_uint16 (stream, 0x4567, NULL, NULL);
 329   g_assert_cmpint (g_seekable_tell (seekable), ==, 4);
 330   g_assert_cmpint (stream_data[0], ==, 0x01);
 331   g_assert_cmpint (stream_data[1], ==, 0x23);
 332   g_assert_cmpint (stream_data[2], ==, 0x45);
 333   g_assert_cmpint (stream_data[3], ==, 0x67);
 334   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 4);
 335
 336   /* Forward relative seek */
 337   res = g_seekable_seek (seekable, 2, G_SEEK_CUR, NULL, &error);
 338   g_assert_no_error (error);
 339   g_assert (res);
 340   g_assert_cmpint (g_seekable_tell (seekable), ==, 6);
 341   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 4);
 342   res = g_data_output_stream_put_uint16 (stream, 0x89AB, NULL, &error);
 343   g_assert (res);
 344   g_assert_cmpint (g_seekable_tell (seekable), ==, 8);
 345   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 346   g_assert_cmpint (stream_data[0], ==, 0x01);
 347   g_assert_cmpint (stream_data[1], ==, 0x23);
 348   g_assert_cmpint (stream_data[2], ==, 0x45);
 349   g_assert_cmpint (stream_data[3], ==, 0x67);
 350   g_assert_cmpint (stream_data[4], ==, 0x00);
 351   g_assert_cmpint (stream_data[5], ==, 0x00);
 352   g_assert_cmpint (stream_data[6], ==, 0x89);
 353   g_assert_cmpint (stream_data[7], ==, 0xAB);
 354
 355   /* Backward relative seek */
 356   res = g_seekable_seek (seekable, -3, G_SEEK_CUR, NULL, &error);
 357   g_assert_no_error (error);
 358   g_assert (res);
 359   g_assert_cmpint (g_seekable_tell (seekable), ==, 5);
 360   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 361   res = g_data_output_stream_put_uint16 (stream, 0xCDEF, NULL, &error);
 362   g_assert_no_error (error);
 363   g_assert (res);
 364   g_assert_cmpint (g_seekable_tell (seekable), ==, 7);
 365   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 366   g_assert_cmpint (stream_data[0], ==, 0x01);
 367   g_assert_cmpint (stream_data[1], ==, 0x23);
 368   g_assert_cmpint (stream_data[2], ==, 0x45);
 369   g_assert_cmpint (stream_data[3], ==, 0x67);
 370   g_assert_cmpint (stream_data[4], ==, 0x00);
 371   g_assert_cmpint (stream_data[5], ==, 0xCD);
 372   g_assert_cmpint (stream_data[6], ==, 0xEF);
 373   g_assert_cmpint (stream_data[7], ==, 0xAB);
 374
 375   /* From start */
 376   res = g_seekable_seek (seekable, 4, G_SEEK_SET, NULL, &error);
 377   g_assert_no_error (error);
 378   g_assert (res);
 379   g_assert_cmpint (g_seekable_tell (seekable), ==, 4);
 380   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 381   res = g_data_output_stream_put_uint16 (stream, 0xFEDC, NULL, &error);
 382   g_assert_no_error (error);
 383   g_assert (res);
 384   g_assert_cmpint (g_seekable_tell (seekable), ==, 6);
 385   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 386   g_assert_cmpint (stream_data[0], ==, 0x01);
 387   g_assert_cmpint (stream_data[1], ==, 0x23);
 388   g_assert_cmpint (stream_data[2], ==, 0x45);
 389   g_assert_cmpint (stream_data[3], ==, 0x67);
 390   g_assert_cmpint (stream_data[4], ==, 0xFE);
 391   g_assert_cmpint (stream_data[5], ==, 0xDC);
 392   g_assert_cmpint (stream_data[6], ==, 0xEF);
 393   g_assert_cmpint (stream_data[7], ==, 0xAB);
 394
 395   /* From end */
 396   res = g_seekable_seek (seekable, -4, G_SEEK_END, NULL, &error);
 397   g_assert_no_error (error);
 398   g_assert (res);
 399   g_assert_cmpint (g_seekable_tell (seekable), ==, 4);
 400   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 401   res = g_data_output_stream_put_uint16 (stream, 0xBA87, NULL, &error);
 402   g_assert_no_error (error);
 403   g_assert (res);
 404   g_assert_cmpint (g_seekable_tell (seekable), ==, 6);
 405   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 8);
 406   g_assert_cmpint (stream_data[0], ==, 0x01);
 407   g_assert_cmpint (stream_data[1], ==, 0x23);
 408   g_assert_cmpint (stream_data[2], ==, 0x45);
 409   g_assert_cmpint (stream_data[3], ==, 0x67);
 410   g_assert_cmpint (stream_data[4], ==, 0xBA);
 411   g_assert_cmpint (stream_data[5], ==, 0x87);
 412   g_assert_cmpint (stream_data[6], ==, 0xEF);
 413   g_assert_cmpint (stream_data[7], ==, 0xAB);
 414
 415   g_object_unref (stream);
 416   g_object_unref (base_stream);
 417   g_free (stream_data);
 418 }
 419
 420 static void
 421 test_truncate (void)
 422 {
 423   GDataOutputStream *stream;
 424   GMemoryOutputStream *base_stream;
 425   GSeekable *seekable;
 426   GError *error;
 427   guchar *stream_data;
 428   gsize len;
 429   gboolean res;
 430
 431   len = 8;
 432
 433   /* Create objects */
 434   stream_data = g_malloc0 (len);
 435   base_stream = G_MEMORY_OUTPUT_STREAM (g_memory_output_stream_new (stream_data, len, g_realloc, g_free));
 436   stream = g_data_output_stream_new (G_OUTPUT_STREAM (base_stream));
 437   g_data_output_stream_set_byte_order (stream, G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN);
 438   seekable = G_SEEKABLE (stream);
 439   error = NULL;
 440   g_assert (g_seekable_can_truncate (seekable));
 441
 442   /* Write */
 443   g_assert_cmpint (g_memory_output_stream_get_size (base_stream), ==, len);
 444   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 0);
 445   res = g_data_output_stream_put_uint16 (stream, 0x0123, NULL, &error);
 446   g_assert_no_error (error);
 447   g_assert (res);
 448   res = g_data_output_stream_put_uint16 (stream, 0x4567, NULL, NULL);
 449   g_assert_no_error (error);
 450   g_assert (res);
 451   g_assert_cmpint (g_memory_output_stream_get_size (base_stream), ==, len);
 452   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 4);
 453   stream_data = g_memory_output_stream_get_data (base_stream);
 454   g_assert_cmpint (stream_data[0], ==, 0x01);
 455   g_assert_cmpint (stream_data[1], ==, 0x23);
 456   g_assert_cmpint (stream_data[2], ==, 0x45);
 457   g_assert_cmpint (stream_data[3], ==, 0x67);
 458
 459   /* Truncate at position */
 460   res = g_seekable_truncate (seekable, 4, NULL, &error);
 461   g_assert_no_error (error);
 462   g_assert (res);
 463   g_assert_cmpint (g_memory_output_stream_get_size (base_stream), ==, 4);
 464   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 4);
 465   stream_data = g_memory_output_stream_get_data (base_stream);
 466   g_assert_cmpint (stream_data[0], ==, 0x01);
 467   g_assert_cmpint (stream_data[1], ==, 0x23);
 468   g_assert_cmpint (stream_data[2], ==, 0x45);
 469   g_assert_cmpint (stream_data[3], ==, 0x67);
 470
 471   /* Truncate beyond position */
 472   res = g_seekable_truncate (seekable, 6, NULL, &error);
 473   g_assert_no_error (error);
 474   g_assert (res);
 475   g_assert_cmpint (g_memory_output_stream_get_size (base_stream), ==, 6);
 476   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 6);
 477   stream_data = g_memory_output_stream_get_data (base_stream);
 478   g_assert_cmpint (stream_data[0], ==, 0x01);
 479   g_assert_cmpint (stream_data[1], ==, 0x23);
 480   g_assert_cmpint (stream_data[2], ==, 0x45);
 481   g_assert_cmpint (stream_data[3], ==, 0x67);
 482
 483   /* Truncate before position */
 484   res = g_seekable_truncate (seekable, 2, NULL, &error);
 485   g_assert_no_error (error);
 486   g_assert (res);
 487   g_assert_cmpint (g_memory_output_stream_get_size (base_stream), ==, 2);
 488   g_assert_cmpint (g_memory_output_stream_get_data_size (base_stream), ==, 2);
 489   stream_data = g_memory_output_stream_get_data (base_stream);
 490   g_assert_cmpint (stream_data[0], ==, 0x01);
 491   g_assert_cmpint (stream_data[1], ==, 0x23);
 492
 493   g_object_unref (stream);
 494   g_object_unref (base_stream);
 495 }
 496
 497 int
 498 main (int   argc,
 499       char *argv[])
 500 {
 501   g_test_init (&argc, &argv, NULL);
 502
 503   g_test_add_func ("/data-output-stream/basic", test_basic);
 504   g_test_add_func ("/data-output-stream/write-lines-LF", test_read_lines_LF);
 505   g_test_add_func ("/data-output-stream/write-lines-CR", test_read_lines_CR);
 506   g_test_add_func ("/data-output-stream/write-lines-CR-LF", test_read_lines_CR_LF);
 507   g_test_add_func ("/data-output-stream/write-int", test_read_int);
 508   g_test_add_func ("/data-output-stream/seek", test_seek);
 509   g_test_add_func ("/data-output-stream/truncate", test_truncate);
 510
 511   return g_test_run();
 512 }