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/* rcbox.c: Reference counted data
*
* Copyright 2018 Emmanuele Bassi
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <glib.h>
typedef struct {
float x, y;
} Point;
static Point *global_point;
/* test_rcbox_new: Test g_rc_box_new() */
static void
test_rcbox_new (void)
{
Point *a = g_rc_box_new (Point);
g_assert_nonnull (a);
g_assert_cmpuint (g_rc_box_get_size (a), ==, sizeof (Point));
g_rc_box_release (a);
}
static void
point_clear (Point *p)
{
g_assert_nonnull (p);
g_assert_true (global_point == p);
g_assert_cmpfloat (p->x, ==, 42.0f);
g_assert_cmpfloat (p->y, ==, 47.0f);
g_test_message ("global_point = %p", p);
global_point = NULL;
}
/* test_rcbox_release_full: Verify that g_rc_box_release_full() calls
* the clear function only when the last reference is released
*/
static void
test_rcbox_release_full (void)
{
Point *p = g_rc_box_new (Point);
g_assert_nonnull (p);
global_point = p;
p->x = 42.0f;
p->y = 47.0f;
g_assert_true (g_rc_box_acquire (p) == p);
g_rc_box_release_full (p, (GDestroyNotify) point_clear);
g_assert_nonnull (global_point);
g_assert_true (p == global_point);
g_rc_box_release_full (p, (GDestroyNotify) point_clear);
g_assert_null (global_point);
}
static Point *global_point_a;
static Point *global_point_b;
static void
point_clear_dup_a (Point *a)
{
g_assert_true (a == global_point_a);
g_test_message ("global_point_a = %p", a);
global_point_a = NULL;
}
static void
point_clear_dup_b (Point *b)
{
g_assert_true (b == global_point_b);
g_test_message ("global_point_b = %p", b);
global_point_b = NULL;
}
/* test_rcbox_dup: Verify that g_rc_box_dup() copies only the
* data and does not change the reference count of the original
*/
static void
test_rcbox_dup (void)
{
Point *a, *b;
a = g_rc_box_new (Point);
a->x = 10.f;
a->y = 5.f;
b = g_rc_box_dup (sizeof (Point), a);
g_assert_true (a != b);
g_assert_cmpfloat (a->x, ==, b->x);
g_assert_cmpfloat (a->y, ==, b->y);
global_point_a = a;
global_point_b = b;
a->x = 1.f;
a->y = 1.f;
g_assert_cmpfloat (a->x, !=, b->x);
g_assert_cmpfloat (a->y, !=, b->y);
b->x = 5.f;
b->y = 10.f;
g_assert_cmpfloat (a->x, !=, b->x);
g_assert_cmpfloat (a->y, !=, b->y);
g_rc_box_release_full (a, (GDestroyNotify) point_clear_dup_a);
g_assert_null (global_point_a);
g_assert_nonnull (global_point_b);
g_rc_box_release_full (b, (GDestroyNotify) point_clear_dup_b);
g_assert_null (global_point_b);
}
int
main (int argc,
char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/rcbox/new", test_rcbox_new);
g_test_add_func ("/rcbox/release-full", test_rcbox_release_full);
g_test_add_func ("/rcbox/dup", test_rcbox_dup);
return g_test_run ();
}
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