1 /*
2 * QNull unit-tests.
3 *
4 * Copyright (C) 2016 Red Hat Inc.
5 *
6 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
7 * See the COPYING.LIB file in the top-level directory.
8 */
9 #include "qemu/osdep.h"
10
11 #include "qapi/qmp/qnull.h"
12 #include "qapi/qobject-input-visitor.h"
13 #include "qapi/qobject-output-visitor.h"
14 #include "qapi/error.h"
15
16 /*
17 * Public Interface test-cases
18 *
19 * (with some violations to access 'private' data)
20 */
21
qnull_ref_test(void)22 static void qnull_ref_test(void)
23 {
24 QObject *obj;
25
26 g_assert(qnull_.base.refcnt == 1);
27 obj = QOBJECT(qnull());
28 g_assert(obj);
29 g_assert(obj == QOBJECT(&qnull_));
30 g_assert(qnull_.base.refcnt == 2);
31 g_assert(qobject_type(obj) == QTYPE_QNULL);
32 qobject_unref(obj);
33 g_assert(qnull_.base.refcnt == 1);
34 }
35
qnull_visit_test(void)36 static void qnull_visit_test(void)
37 {
38 QObject *obj;
39 Visitor *v;
40 QNull *null;
41
42 /*
43 * Most tests of interactions between QObject and visitors are in
44 * test-qmp-*-visitor; but these tests live here because they
45 * depend on layering violations to check qnull_ refcnt.
46 */
47
48 g_assert(qnull_.base.refcnt == 1);
49 obj = QOBJECT(qnull());
50 v = qobject_input_visitor_new(obj);
51 qobject_unref(obj);
52 visit_type_null(v, NULL, &null, &error_abort);
53 g_assert(obj == QOBJECT(&qnull_));
54 qobject_unref(null);
55 visit_free(v);
56
57 null = NULL;
58 v = qobject_output_visitor_new(&obj);
59 visit_type_null(v, NULL, &null, &error_abort);
60 visit_complete(v, &obj);
61 g_assert(obj == QOBJECT(&qnull_));
62 qobject_unref(null);
63 qobject_unref(obj);
64 visit_free(v);
65
66 g_assert(qnull_.base.refcnt == 1);
67 }
68
main(int argc,char ** argv)69 int main(int argc, char **argv)
70 {
71 g_test_init(&argc, &argv, NULL);
72
73 g_test_add_func("/public/qnull_ref", qnull_ref_test);
74 g_test_add_func("/public/qnull_visit", qnull_visit_test);
75
76 return g_test_run();
77 }
78