gio/tests/memory-output-stream.c

   1 /* GLib testing framework examples and tests
   2  * Copyright (C) 2008 Red Hat, Inc.
   3  * Author: Matthias Clasen
   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 #include <glib/glib.h>
  23 #include <gio/gio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 static void
  28 test_truncate (void)
  29 {
  30   GOutputStream *mo;
  31   GDataOutputStream *o;
  32   int i;
  33   GError *error = NULL;
  34   guint8 *data;
  35
  36   g_test_bug ("540423");
  37
  38   mo = g_memory_output_stream_new_resizable ();
  39   g_assert (g_seekable_can_truncate (G_SEEKABLE (mo)));
  40   o = g_data_output_stream_new (mo);
  41   for (i = 0; i < 1000; i++)
  42     {
  43       g_data_output_stream_put_byte (o, 1, NULL, &error);
  44       g_assert_no_error (error);
  45     }
  46   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 1000);
  47   g_seekable_truncate (G_SEEKABLE (mo), 0, NULL, &error);
  48   g_assert_cmpuint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1000);
  49
  50   g_assert_no_error (error);
  51   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
  52   for (i = 0; i < 2000; i++)
  53     {
  54       g_data_output_stream_put_byte (o, 2, NULL, &error);
  55       g_assert_no_error (error);
  56     }
  57   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 3000);
  58
  59   data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
  60
  61   /* The 1's written initially were lost when we truncated to 0
  62    * and then started writing at position 1000.
  63    */
  64   for (i = 0; i < 1000; i++)
  65     g_assert_cmpuint (data[i], ==, 0);
  66   for (i = 1000; i < 3000; i++)
  67     g_assert_cmpuint (data[i], ==, 2);
  68
  69   g_test_bug ("720080");
  70
  71   g_seekable_truncate (G_SEEKABLE (mo), 8192, NULL, &error);
  72   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 8192);
  73
  74   data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
  75   for (i = 3000; i < 8192; i++)
  76     g_assert_cmpuint (data[i], ==, 0);
  77
  78   g_object_unref (o);
  79   g_object_unref (mo);
  80 }
  81
  82 static void
  83 test_seek_fixed (void)
  84 {
  85   GOutputStream *mo;
  86   GError *error;
  87
  88   mo = g_memory_output_stream_new (g_new (gchar, 100), 100, NULL, g_free);
  89
  90   g_assert (G_IS_SEEKABLE (mo));
  91   g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
  92   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
  93
  94   error = NULL;
  95   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
  96   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
  97   g_clear_error (&error);
  98   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
  99
 100   g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
 101   g_assert_no_error (error);
 102   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);
 103
 104   g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
 105   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
 106   g_assert_no_error (error);
 107
 108   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
 109   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
 110   g_clear_error (&error);
 111   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
 112
 113   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
 114   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
 115   g_clear_error (&error);
 116   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
 117
 118   g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
 119   g_assert_no_error (error);
 120   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 100);
 121
 122   g_assert (g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
 123   g_assert_no_error (error);
 124   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 99);
 125
 126   g_object_unref (mo);
 127 }
 128
 129 static void
 130 test_seek_resizable_stream (GOutputStream *mo)
 131 {
 132   GError *error;
 133
 134   g_assert (G_IS_SEEKABLE (mo));
 135   g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
 136   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
 137
 138   error = NULL;
 139   g_assert (g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
 140   g_assert_no_error (error);
 141   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 222);
 142
 143   g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
 144   g_assert_no_error (error);
 145   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);
 146
 147   g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
 148   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
 149   g_assert_no_error (error);
 150
 151   g_assert (g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
 152   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 246);
 153   g_assert_no_error (error);
 154
 155   g_assert (g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
 156   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1);
 157   g_assert_no_error (error);
 158
 159   g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
 160   g_assert_no_error (error);
 161   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
 162
 163   /* The 'end' is still zero, so this should fail */
 164   g_assert (!g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
 165   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
 166   g_clear_error (&error);
 167   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
 168 }
 169
 170 static void
 171 test_seek_resizable (void)
 172 {
 173   GOutputStream *mo;
 174   gint i;
 175
 176   /* For resizable streams, the initially allocated size is purely an
 177    * implementation detail.  We should not be able to tell the
 178    * difference based on the seek API, so make a bunch of streams with
 179    * different sizes and subject them to the same test.
 180    */
 181   for (i = 0; i < 1024; i++)
 182     {
 183       mo = g_memory_output_stream_new (g_malloc (i), i, g_realloc, g_free);
 184
 185       test_seek_resizable_stream (mo);
 186
 187       g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
 188       /* No writes = no resizes */
 189       g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, i);
 190
 191       g_object_unref (mo);
 192     }
 193 }
 194
 195 static void
 196 test_data_size (void)
 197 {
 198   GOutputStream *mo;
 199   GDataOutputStream *o;
 200   int pos;
 201
 202   g_test_bug ("540459");
 203
 204   mo = g_memory_output_stream_new_resizable ();
 205   o = g_data_output_stream_new (mo);
 206   g_data_output_stream_put_byte (o, 1, NULL, NULL);
 207   pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
 208   g_assert_cmpint (pos, ==, 1);
 209
 210   g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_CUR, NULL, NULL);
 211   pos = g_seekable_tell (G_SEEKABLE (mo));
 212   g_assert_cmpint (pos, ==, 1);
 213
 214   g_test_bug ("540461");
 215
 216   g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_SET, NULL, NULL);
 217   pos = g_seekable_tell (G_SEEKABLE (mo));
 218   g_assert_cmpint (pos, ==, 0);
 219
 220   pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
 221   g_assert_cmpint (pos, ==, 1);
 222
 223   g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 16);
 224
 225   g_object_unref (o);
 226   g_object_unref (mo);
 227 }
 228
 229 static void
 230 test_properties (void)
 231 {
 232   GOutputStream *mo;
 233   GDataOutputStream *o;
 234   int i;
 235   GError *error = NULL;
 236   gsize data_size_fun;
 237   gsize data_size_prop = 0;
 238   gpointer data_fun;
 239   gpointer data_prop;
 240   gpointer func;
 241
 242   g_test_bug ("605733");
 243
 244   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
 245                                       "realloc-function", g_realloc,
 246                                       "destroy-function", g_free,
 247                                       NULL);
 248   o = g_data_output_stream_new (mo);
 249
 250   for (i = 0; i < 1000; i++)
 251     {
 252       g_data_output_stream_put_byte (o, 1, NULL, &error);
 253       g_assert_no_error (error);
 254     }
 255
 256   data_size_fun = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
 257   g_object_get (mo, "data-size", &data_size_prop, NULL);
 258   g_assert_cmpint (data_size_fun, ==, data_size_prop);
 259
 260   data_fun = g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
 261   g_object_get (mo, "data", &data_prop, NULL);
 262   g_assert_cmphex (GPOINTER_TO_SIZE (data_fun), ==, GPOINTER_TO_SIZE (data_prop));
 263
 264   g_object_get (mo, "realloc-function", &func, NULL);
 265   g_assert (func == g_realloc);
 266   g_object_get (mo, "destroy-function", &func, NULL);
 267   g_assert (func == g_free);
 268
 269   data_size_fun = g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo));
 270   g_object_get (mo, "size", &data_size_prop, NULL);
 271   g_assert_cmpint (data_size_fun, ==, data_size_prop);
 272
 273   g_object_unref (o);
 274   g_object_unref (mo);
 275 }
 276
 277 static void
 278 test_write_bytes (void)
 279 {
 280   GOutputStream *mo;
 281   GBytes *bytes, *bytes2;
 282   GError *error = NULL;
 283
 284   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
 285                                       "realloc-function", g_realloc,
 286                                       "destroy-function", g_free,
 287                                       NULL);
 288   bytes = g_bytes_new_static ("hello world!", strlen ("hello world!") + 1);
 289   g_output_stream_write_bytes (mo, bytes, NULL, &error);
 290   g_assert_no_error (error);
 291
 292   g_output_stream_close (mo, NULL, &error);
 293   g_assert_no_error (error);
 294
 295   bytes2 = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (mo));
 296   g_object_unref (mo);
 297   g_assert (g_bytes_equal (bytes, bytes2));
 298
 299   g_bytes_unref (bytes);
 300   g_bytes_unref (bytes2);
 301 }
 302
 303 static void
 304 test_steal_as_bytes (void)
 305 {
 306   GOutputStream *mo;
 307   GDataOutputStream *o;
 308   GError *error = NULL;
 309   GBytes *bytes;
 310   gsize size;
 311
 312   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
 313                                       "realloc-function", g_realloc,
 314                                       "destroy-function", g_free,
 315                                       NULL);
 316   o = g_data_output_stream_new (mo);
 317
 318   g_data_output_stream_put_string (o, "hello ", NULL, &error);
 319   g_assert_no_error (error);
 320
 321   g_data_output_stream_put_string (o, "world!", NULL, &error);
 322   g_assert_no_error (error);
 323
 324   g_data_output_stream_put_byte (o, '\0', NULL, &error);
 325   g_assert_no_error (error);
 326
 327   g_output_stream_close ((GOutputStream*) o, NULL, &error);
 328   g_assert_no_error (error);
 329
 330   bytes = g_memory_output_stream_steal_as_bytes ((GMemoryOutputStream*)mo);
 331   g_object_unref (mo);
 332
 333   g_assert_cmpint (g_bytes_get_size (bytes), ==, strlen ("hello world!") + 1);
 334   g_assert_cmpstr (g_bytes_get_data (bytes, &size), ==, "hello world!");
 335
 336   g_bytes_unref (bytes);
 337   g_object_unref (o);
 338 }
 339
 340 int
 341 main (int   argc,
 342       char *argv[])
 343 {
 344   g_test_init (&argc, &argv, NULL);
 345   g_test_bug_base ("http://bugzilla.gnome.org/");
 346
 347   g_test_add_func ("/memory-output-stream/truncate", test_truncate);
 348   g_test_add_func ("/memory-output-stream/seek/fixed", test_seek_fixed);
 349   g_test_add_func ("/memory-output-stream/seek/resizable", test_seek_resizable);
 350   g_test_add_func ("/memory-output-stream/get-data-size", test_data_size);
 351   g_test_add_func ("/memory-output-stream/properties", test_properties);
 352   g_test_add_func ("/memory-output-stream/write-bytes", test_write_bytes);
 353   g_test_add_func ("/memory-output-stream/steal_as_bytes", test_steal_as_bytes);
 354
 355   return g_test_run();
 356 }