gio/tests/memory-output-stream.c - third_party/glib - Git at Google

 /* GLib testing framework examples and tests
  * Copyright (C) 2008 Red Hat, Inc.
  * Author: Matthias Clasen
  *
  * This work is provided "as is"; redistribution and modification
  * in whole or in part, in any medium, physical or electronic is
  * permitted without restriction.
  *
  * This work 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.
  *
  * In no event shall the authors or contributors be liable for any
  * direct, indirect, incidental, special, exemplary, or consequential
  * damages (including, but not limited to, procurement of substitute
  * goods or services; loss of use, data, or profits; or business
  * interruption) however caused and on any theory of liability, whether
  * in contract, strict liability, or tort (including negligence or
  * otherwise) arising in any way out of the use of this software, even
  * if advised of the possibility of such damage.
  */
 #include <glib/glib.h>
 #include <gio/gio.h>
 #include <stdlib.h>
 #include <string.h>

 static void
 test_truncate (void)
 {
   GOutputStream *mo;
   GDataOutputStream *o;
   int i;
   GError *error = NULL;
   guint8 *data;

   g_test_bug ("540423");

   mo = g_memory_output_stream_new_resizable ();
   g_assert (g_seekable_can_truncate (G_SEEKABLE (mo)));
   o = g_data_output_stream_new (mo);
   for (i = 0; i < 1000; i++)
     {
       g_data_output_stream_put_byte (o, 1, NULL, &error);
       g_assert_no_error (error);
     }
   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 1000);
   g_seekable_truncate (G_SEEKABLE (mo), 0, NULL, &error);
   g_assert_cmpuint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1000);

   g_assert_no_error (error);
   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
   for (i = 0; i < 2000; i++)
     {
       g_data_output_stream_put_byte (o, 2, NULL, &error);
       g_assert_no_error (error);
     }
   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 3000);

   data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));

   /* The 1's written initially were lost when we truncated to 0
    * and then started writing at position 1000.
    */
   for (i = 0; i < 1000; i++)
     g_assert_cmpuint (data[i], ==, 0);
   for (i = 1000; i < 3000; i++)
     g_assert_cmpuint (data[i], ==, 2);

   g_test_bug ("720080");

   g_seekable_truncate (G_SEEKABLE (mo), 8192, NULL, &error);
   g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 8192);

   data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
   for (i = 3000; i < 8192; i++)
     g_assert_cmpuint (data[i], ==, 0);

   g_object_unref (o);
   g_object_unref (mo);
 }

 static void
 test_seek_fixed (void)
 {
   GOutputStream *mo;
   GError *error;

   mo = g_memory_output_stream_new (g_new (gchar, 100), 100, NULL, g_free);

   g_assert (G_IS_SEEKABLE (mo));
   g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

   error = NULL;
   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
   g_clear_error (&error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
   g_assert_no_error (error);

   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
   g_clear_error (&error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);

   g_assert (!g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
   g_clear_error (&error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 100);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 99);

   g_object_unref (mo);
 }

 static void
 test_seek_resizable_stream (GOutputStream *mo)
 {
   GError *error;

   g_assert (G_IS_SEEKABLE (mo));
   g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

   error = NULL;
   g_assert (g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 222);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
   g_assert_no_error (error);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 246);
   g_assert_no_error (error);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1);
   g_assert_no_error (error);

   g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
   g_assert_no_error (error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

   /* The 'end' is still zero, so this should fail */
   g_assert (!g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
   g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
   g_clear_error (&error);
   g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
 }

 static void
 test_seek_resizable (void)
 {
   GOutputStream *mo;
   gint i;

   /* For resizable streams, the initially allocated size is purely an
    * implementation detail.  We should not be able to tell the
    * difference based on the seek API, so make a bunch of streams with
    * different sizes and subject them to the same test.
    */
   for (i = 0; i < 1024; i++)
     {
       mo = g_memory_output_stream_new (g_malloc (i), i, g_realloc, g_free);

       test_seek_resizable_stream (mo);

       g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
       /* No writes = no resizes */
       g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, i);

       g_object_unref (mo);
     }
 }

 static void
 test_data_size (void)
 {
   GOutputStream *mo;
   GDataOutputStream *o;
   int pos;

   g_test_bug ("540459");

   mo = g_memory_output_stream_new_resizable ();
   o = g_data_output_stream_new (mo);
   g_data_output_stream_put_byte (o, 1, NULL, NULL);
   pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
   g_assert_cmpint (pos, ==, 1);

   g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_CUR, NULL, NULL);
   pos = g_seekable_tell (G_SEEKABLE (mo));
   g_assert_cmpint (pos, ==, 1);

   g_test_bug ("540461");

   g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_SET, NULL, NULL);
   pos = g_seekable_tell (G_SEEKABLE (mo));
   g_assert_cmpint (pos, ==, 0);

   pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
   g_assert_cmpint (pos, ==, 1);

   g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 16);

   g_object_unref (o);
   g_object_unref (mo);
 }

 static void
 test_properties (void)
 {
   GOutputStream *mo;
   GDataOutputStream *o;
   int i;
   GError *error = NULL;
   gsize data_size_fun;
   gsize data_size_prop = 0;
   gpointer data_fun;
   gpointer data_prop;
   gpointer func;

   g_test_bug ("605733");

   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
                                       "realloc-function", g_realloc,
                                       "destroy-function", g_free,
                                       NULL);
   o = g_data_output_stream_new (mo);

   for (i = 0; i < 1000; i++)
     {
       g_data_output_stream_put_byte (o, 1, NULL, &error);
       g_assert_no_error (error);
     }

   data_size_fun = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
   g_object_get (mo, "data-size", &data_size_prop, NULL);
   g_assert_cmpint (data_size_fun, ==, data_size_prop);

   data_fun = g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
   g_object_get (mo, "data", &data_prop, NULL);
   g_assert_cmphex (GPOINTER_TO_SIZE (data_fun), ==, GPOINTER_TO_SIZE (data_prop));

   g_object_get (mo, "realloc-function", &func, NULL);
   g_assert (func == g_realloc);
   g_object_get (mo, "destroy-function", &func, NULL);
   g_assert (func == g_free);

   data_size_fun = g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo));
   g_object_get (mo, "size", &data_size_prop, NULL);
   g_assert_cmpint (data_size_fun, ==, data_size_prop);

   g_object_unref (o);
   g_object_unref (mo);
 }

 static void
 test_write_bytes (void)
 {
   GOutputStream *mo;
   GBytes *bytes, *bytes2;
   GError *error = NULL;

   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
                                       "realloc-function", g_realloc,
                                       "destroy-function", g_free,
                                       NULL);
   bytes = g_bytes_new_static ("hello world!", strlen ("hello world!") + 1);
   g_output_stream_write_bytes (mo, bytes, NULL, &error);
   g_assert_no_error (error);

   g_output_stream_close (mo, NULL, &error);
   g_assert_no_error (error);

   bytes2 = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (mo));
   g_object_unref (mo);
   g_assert (g_bytes_equal (bytes, bytes2));

   g_bytes_unref (bytes);
   g_bytes_unref (bytes2);
 }

 static void
 test_steal_as_bytes (void)
 {
   GOutputStream *mo;
   GDataOutputStream *o;
   GError *error = NULL;
   GBytes *bytes;
   gsize size;

   mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
                                       "realloc-function", g_realloc,
                                       "destroy-function", g_free,
                                       NULL);
   o = g_data_output_stream_new (mo);

   g_data_output_stream_put_string (o, "hello ", NULL, &error);
   g_assert_no_error (error);

   g_data_output_stream_put_string (o, "world!", NULL, &error);
   g_assert_no_error (error);

   g_data_output_stream_put_byte (o, '\0', NULL, &error);
   g_assert_no_error (error);

   g_output_stream_close ((GOutputStream*) o, NULL, &error);
   g_assert_no_error (error);

   bytes = g_memory_output_stream_steal_as_bytes ((GMemoryOutputStream*)mo);
   g_object_unref (mo);

   g_assert_cmpint (g_bytes_get_size (bytes), ==, strlen ("hello world!") + 1);
   g_assert_cmpstr (g_bytes_get_data (bytes, &size), ==, "hello world!");

   g_bytes_unref (bytes);
   g_object_unref (o);
 }

 int
 main (int   argc,
       char *argv[])
 {
   g_test_init (&argc, &argv, NULL);
   g_test_bug_base ("http://bugzilla.gnome.org/");

   g_test_add_func ("/memory-output-stream/truncate", test_truncate);
   g_test_add_func ("/memory-output-stream/seek/fixed", test_seek_fixed);
   g_test_add_func ("/memory-output-stream/seek/resizable", test_seek_resizable);
   g_test_add_func ("/memory-output-stream/get-data-size", test_data_size);
   g_test_add_func ("/memory-output-stream/properties", test_properties);
   g_test_add_func ("/memory-output-stream/write-bytes", test_write_bytes);
   g_test_add_func ("/memory-output-stream/steal_as_bytes", test_steal_as_bytes);

   return g_test_run();
 }
	/* GLib testing framework examples and tests
	* Copyright (C) 2008 Red Hat, Inc.
	* Author: Matthias Clasen
	*
	* This work is provided "as is"; redistribution and modification
	* in whole or in part, in any medium, physical or electronic is
	* permitted without restriction.
	*
	* This work 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.
	*
	* In no event shall the authors or contributors be liable for any
	* direct, indirect, incidental, special, exemplary, or consequential
	* damages (including, but not limited to, procurement of substitute
	* goods or services; loss of use, data, or profits; or business
	* interruption) however caused and on any theory of liability, whether
	* in contract, strict liability, or tort (including negligence or
	* otherwise) arising in any way out of the use of this software, even
	* if advised of the possibility of such damage.
	*/
	#include <glib/glib.h>
	#include <gio/gio.h>
	#include <stdlib.h>
	#include <string.h>

	static void
	test_truncate (void)
	{
	GOutputStream *mo;
	GDataOutputStream *o;
	int i;
	GError *error = NULL;
	guint8 *data;

	g_test_bug ("540423");

	mo = g_memory_output_stream_new_resizable ();
	g_assert (g_seekable_can_truncate (G_SEEKABLE (mo)));
	o = g_data_output_stream_new (mo);
	for (i = 0; i < 1000; i++)
	{
	g_data_output_stream_put_byte (o, 1, NULL, &error);
	g_assert_no_error (error);
	}
	g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 1000);
	g_seekable_truncate (G_SEEKABLE (mo), 0, NULL, &error);
	g_assert_cmpuint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1000);

	g_assert_no_error (error);
	g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
	for (i = 0; i < 2000; i++)
	{
	g_data_output_stream_put_byte (o, 2, NULL, &error);
	g_assert_no_error (error);
	}
	g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 3000);

	data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));

	/* The 1's written initially were lost when we truncated to 0
	* and then started writing at position 1000.
	*/
	for (i = 0; i < 1000; i++)
	g_assert_cmpuint (data[i], ==, 0);
	for (i = 1000; i < 3000; i++)
	g_assert_cmpuint (data[i], ==, 2);

	g_test_bug ("720080");

	g_seekable_truncate (G_SEEKABLE (mo), 8192, NULL, &error);
	g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 8192);

	data = (guint8 *)g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
	for (i = 3000; i < 8192; i++)
	g_assert_cmpuint (data[i], ==, 0);

	g_object_unref (o);
	g_object_unref (mo);
	}

	static void
	test_seek_fixed (void)
	{
	GOutputStream *mo;
	GError *error;

	mo = g_memory_output_stream_new (g_new (gchar, 100), 100, NULL, g_free);

	g_assert (G_IS_SEEKABLE (mo));
	g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

	error = NULL;
	g_assert (!g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
	g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
	g_clear_error (&error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
	g_assert_no_error (error);

	g_assert (!g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
	g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
	g_clear_error (&error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);

	g_assert (!g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
	g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
	g_clear_error (&error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 100);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 99);

	g_object_unref (mo);
	}

	static void
	test_seek_resizable_stream (GOutputStream *mo)
	{
	GError *error;

	g_assert (G_IS_SEEKABLE (mo));
	g_assert (g_seekable_can_seek (G_SEEKABLE (mo)));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

	error = NULL;
	g_assert (g_seekable_seek (G_SEEKABLE (mo), 222, G_SEEK_CUR, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 222);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 26, G_SEEK_SET, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 26);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 20, G_SEEK_CUR, NULL, &error));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 46);
	g_assert_no_error (error);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 200, G_SEEK_CUR, NULL, &error));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 246);
	g_assert_no_error (error);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 1, G_SEEK_END, NULL, &error));
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 1);
	g_assert_no_error (error);

	g_assert (g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_END, NULL, &error));
	g_assert_no_error (error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);

	/* The 'end' is still zero, so this should fail */
	g_assert (!g_seekable_seek (G_SEEKABLE (mo), -1, G_SEEK_END, NULL, &error));
	g_assert_error (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT);
	g_clear_error (&error);
	g_assert_cmpint (g_seekable_tell (G_SEEKABLE (mo)), ==, 0);
	}

	static void
	test_seek_resizable (void)
	{
	GOutputStream *mo;
	gint i;

	/* For resizable streams, the initially allocated size is purely an
	* implementation detail. We should not be able to tell the
	* difference based on the seek API, so make a bunch of streams with
	* different sizes and subject them to the same test.
	*/
	for (i = 0; i < 1024; i++)
	{
	mo = g_memory_output_stream_new (g_malloc (i), i, g_realloc, g_free);

	test_seek_resizable_stream (mo);

	g_assert_cmpint (g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 0);
	/* No writes = no resizes */
	g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, i);

	g_object_unref (mo);
	}
	}

	static void
	test_data_size (void)
	{
	GOutputStream *mo;
	GDataOutputStream *o;
	int pos;

	g_test_bug ("540459");

	mo = g_memory_output_stream_new_resizable ();
	o = g_data_output_stream_new (mo);
	g_data_output_stream_put_byte (o, 1, NULL, NULL);
	pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
	g_assert_cmpint (pos, ==, 1);

	g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_CUR, NULL, NULL);
	pos = g_seekable_tell (G_SEEKABLE (mo));
	g_assert_cmpint (pos, ==, 1);

	g_test_bug ("540461");

	g_seekable_seek (G_SEEKABLE (mo), 0, G_SEEK_SET, NULL, NULL);
	pos = g_seekable_tell (G_SEEKABLE (mo));
	g_assert_cmpint (pos, ==, 0);

	pos = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
	g_assert_cmpint (pos, ==, 1);

	g_assert_cmpint (g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo)), ==, 16);

	g_object_unref (o);
	g_object_unref (mo);
	}

	static void
	test_properties (void)
	{
	GOutputStream *mo;
	GDataOutputStream *o;
	int i;
	GError *error = NULL;
	gsize data_size_fun;
	gsize data_size_prop = 0;
	gpointer data_fun;
	gpointer data_prop;
	gpointer func;

	g_test_bug ("605733");

	mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
	"realloc-function", g_realloc,
	"destroy-function", g_free,
	NULL);
	o = g_data_output_stream_new (mo);

	for (i = 0; i < 1000; i++)
	{
	g_data_output_stream_put_byte (o, 1, NULL, &error);
	g_assert_no_error (error);
	}

	data_size_fun = g_memory_output_stream_get_data_size (G_MEMORY_OUTPUT_STREAM (mo));
	g_object_get (mo, "data-size", &data_size_prop, NULL);
	g_assert_cmpint (data_size_fun, ==, data_size_prop);

	data_fun = g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (mo));
	g_object_get (mo, "data", &data_prop, NULL);
	g_assert_cmphex (GPOINTER_TO_SIZE (data_fun), ==, GPOINTER_TO_SIZE (data_prop));

	g_object_get (mo, "realloc-function", &func, NULL);
	g_assert (func == g_realloc);
	g_object_get (mo, "destroy-function", &func, NULL);
	g_assert (func == g_free);

	data_size_fun = g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM (mo));
	g_object_get (mo, "size", &data_size_prop, NULL);
	g_assert_cmpint (data_size_fun, ==, data_size_prop);

	g_object_unref (o);
	g_object_unref (mo);
	}

	static void
	test_write_bytes (void)
	{
	GOutputStream *mo;
	GBytes bytes, bytes2;
	GError *error = NULL;

	mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
	"realloc-function", g_realloc,
	"destroy-function", g_free,
	NULL);
	bytes = g_bytes_new_static ("hello world!", strlen ("hello world!") + 1);
	g_output_stream_write_bytes (mo, bytes, NULL, &error);
	g_assert_no_error (error);

	g_output_stream_close (mo, NULL, &error);
	g_assert_no_error (error);

	bytes2 = g_memory_output_stream_steal_as_bytes (G_MEMORY_OUTPUT_STREAM (mo));
	g_object_unref (mo);
	g_assert (g_bytes_equal (bytes, bytes2));

	g_bytes_unref (bytes);
	g_bytes_unref (bytes2);
	}

	static void
	test_steal_as_bytes (void)
	{
	GOutputStream *mo;
	GDataOutputStream *o;
	GError *error = NULL;
	GBytes *bytes;
	gsize size;

	mo = (GOutputStream*) g_object_new (G_TYPE_MEMORY_OUTPUT_STREAM,
	"realloc-function", g_realloc,
	"destroy-function", g_free,
	NULL);
	o = g_data_output_stream_new (mo);

	g_data_output_stream_put_string (o, "hello ", NULL, &error);
	g_assert_no_error (error);

	g_data_output_stream_put_string (o, "world!", NULL, &error);
	g_assert_no_error (error);

	g_data_output_stream_put_byte (o, '\0', NULL, &error);
	g_assert_no_error (error);

	g_output_stream_close ((GOutputStream*) o, NULL, &error);
	g_assert_no_error (error);

	bytes = g_memory_output_stream_steal_as_bytes ((GMemoryOutputStream*)mo);
	g_object_unref (mo);

	g_assert_cmpint (g_bytes_get_size (bytes), ==, strlen ("hello world!") + 1);
	g_assert_cmpstr (g_bytes_get_data (bytes, &size), ==, "hello world!");

	g_bytes_unref (bytes);
	g_object_unref (o);
	}

	int
	main (int argc,
	char *argv[])
	{
	g_test_init (&argc, &argv, NULL);
	g_test_bug_base ("http://bugzilla.gnome.org/");

	g_test_add_func ("/memory-output-stream/truncate", test_truncate);
	g_test_add_func ("/memory-output-stream/seek/fixed", test_seek_fixed);
	g_test_add_func ("/memory-output-stream/seek/resizable", test_seek_resizable);
	g_test_add_func ("/memory-output-stream/get-data-size", test_data_size);
	g_test_add_func ("/memory-output-stream/properties", test_properties);
	g_test_add_func ("/memory-output-stream/write-bytes", test_write_bytes);
	g_test_add_func ("/memory-output-stream/steal_as_bytes", test_steal_as_bytes);

	return g_test_run();
	}