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#include <glib-object.h>
/* --------------------------------- */
/* test_object_constructor_singleton */
typedef GObject MySingletonObject;
typedef GObjectClass MySingletonObjectClass;
GType my_singleton_object_get_type (void);
G_DEFINE_TYPE (MySingletonObject, my_singleton_object, G_TYPE_OBJECT)
static MySingletonObject *singleton;
static void
my_singleton_object_init (MySingletonObject *obj)
{
}
static GObject *
my_singleton_object_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_params)
{
GObject *object;
if (singleton)
return g_object_ref (singleton);
object = G_OBJECT_CLASS (my_singleton_object_parent_class)->
constructor (type, n_construct_properties, construct_params);
singleton = (MySingletonObject *)object;
return object;
}
static void
my_singleton_object_finalize (MySingletonObject *obj)
{
singleton = NULL;
G_OBJECT_CLASS (my_singleton_object_parent_class)->finalize (obj);
}
static void
my_singleton_object_class_init (MySingletonObjectClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructor = my_singleton_object_constructor;
object_class->finalize = my_singleton_object_finalize;
}
static void
test_object_constructor_singleton (void)
{
MySingletonObject *one, *two, *three;
one = g_object_new (my_singleton_object_get_type (), NULL);
g_assert_cmpint (G_OBJECT (one)->ref_count, ==, 1);
two = g_object_new (my_singleton_object_get_type (), NULL);
g_assert (one == two);
g_assert_cmpint (G_OBJECT (two)->ref_count, ==, 2);
three = g_object_new (my_singleton_object_get_type (), NULL);
g_assert (one == three);
g_assert_cmpint (G_OBJECT (three)->ref_count, ==, 3);
g_object_add_weak_pointer (G_OBJECT (one), (gpointer *)&one);
g_object_unref (one);
g_assert (one != NULL);
g_object_unref (three);
g_object_unref (two);
g_assert (one == NULL);
}
/* ----------------------------------- */
/* test_object_constructor_infanticide */
typedef GObject MyInfanticideObject;
typedef GObjectClass MyInfanticideObjectClass;
GType my_infanticide_object_get_type (void);
G_DEFINE_TYPE (MyInfanticideObject, my_infanticide_object, G_TYPE_OBJECT)
static void
my_infanticide_object_init (MyInfanticideObject *obj)
{
}
static GObject *
my_infanticide_object_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_params)
{
GObject *object;
object = G_OBJECT_CLASS (my_infanticide_object_parent_class)->
constructor (type, n_construct_properties, construct_params);
g_object_unref (object);
return NULL;
}
static void
my_infanticide_object_class_init (MyInfanticideObjectClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructor = my_infanticide_object_constructor;
}
static void
test_object_constructor_infanticide (void)
{
GObject *obj;
int i;
#ifndef G_ENABLE_DEBUG
g_test_skip ("skip tests that rely on debug-only warnings");
return;
#endif
g_test_bug ("https://bugzilla.gnome.org/show_bug.cgi?id=661576");
for (i = 0; i < 1000; i++)
{
g_test_expect_message ("GLib-GObject", G_LOG_LEVEL_CRITICAL,
"*finalized while still in-construction*");
g_test_expect_message ("GLib-GObject", G_LOG_LEVEL_CRITICAL,
"*Custom constructor*returned NULL*");
obj = g_object_new (my_infanticide_object_get_type (), NULL);
g_assert_null (obj);
g_test_assert_expected_messages ();
}
}
/* --------------------------------- */
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/object/constructor/singleton", test_object_constructor_singleton);
g_test_add_func ("/object/constructor/infanticide", test_object_constructor_infanticide);
return g_test_run ();
}
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