Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-6.0-pull-reques...
[qemu.git] / tests / check-qnull.c
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 "qemu-common.h"
13 #include "qapi/qobject-input-visitor.h"
14 #include "qapi/qobject-output-visitor.h"
15 #include "qapi/error.h"
16
17 /*
18 * Public Interface test-cases
19 *
20 * (with some violations to access 'private' data)
21 */
22
23 static void qnull_ref_test(void)
24 {
25 QObject *obj;
26
27 g_assert(qnull_.base.refcnt == 1);
28 obj = QOBJECT(qnull());
29 g_assert(obj);
30 g_assert(obj == QOBJECT(&qnull_));
31 g_assert(qnull_.base.refcnt == 2);
32 g_assert(qobject_type(obj) == QTYPE_QNULL);
33 qobject_unref(obj);
34 g_assert(qnull_.base.refcnt == 1);
35 }
36
37 static void qnull_visit_test(void)
38 {
39 QObject *obj;
40 Visitor *v;
41 QNull *null;
42
43 /*
44 * Most tests of interactions between QObject and visitors are in
45 * test-qmp-*-visitor; but these tests live here because they
46 * depend on layering violations to check qnull_ refcnt.
47 */
48
49 g_assert(qnull_.base.refcnt == 1);
50 obj = QOBJECT(qnull());
51 v = qobject_input_visitor_new(obj);
52 qobject_unref(obj);
53 visit_type_null(v, NULL, &null, &error_abort);
54 g_assert(obj == QOBJECT(&qnull_));
55 qobject_unref(null);
56 visit_free(v);
57
58 null = NULL;
59 v = qobject_output_visitor_new(&obj);
60 visit_type_null(v, NULL, &null, &error_abort);
61 visit_complete(v, &obj);
62 g_assert(obj == QOBJECT(&qnull_));
63 qobject_unref(null);
64 qobject_unref(obj);
65 visit_free(v);
66
67 g_assert(qnull_.base.refcnt == 1);
68 }
69
70 int main(int argc, char **argv)
71 {
72 g_test_init(&argc, &argv, NULL);
73
74 g_test_add_func("/public/qnull_ref", qnull_ref_test);
75 g_test_add_func("/public/qnull_visit", qnull_visit_test);
76
77 return g_test_run();
78 }