1 /*
2  * QEMU I/O channel null test
3  *
4  * Copyright (c) 2022 Red Hat, Inc.
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #include "qemu/osdep.h"
22 #include "io/channel-null.h"
23 #include "qapi/error.h"
24 
25 static gboolean test_io_channel_watch(QIOChannel *ioc,
26                                       GIOCondition condition,
27                                       gpointer opaque)
28 {
29     GIOCondition *gotcond = opaque;
30     *gotcond = condition;
31     return G_SOURCE_REMOVE;
32 }
33 
34 static void test_io_channel_null_io(void)
35 {
36     g_autoptr(QIOChannelNull) null = qio_channel_null_new();
37     char buf[1024];
38     GIOCondition gotcond = 0;
39     Error *local_err = NULL;
40 
41     g_assert(qio_channel_write(QIO_CHANNEL(null),
42                                "Hello World", 11,
43                                &error_abort) == 11);
44 
45     g_assert(qio_channel_read(QIO_CHANNEL(null),
46                               buf, sizeof(buf),
47                               &error_abort) == 0);
48 
49     qio_channel_add_watch(QIO_CHANNEL(null),
50                           G_IO_IN,
51                           test_io_channel_watch,
52                           &gotcond,
53                           NULL);
54 
55     g_main_context_iteration(NULL, false);
56 
57     g_assert(gotcond == G_IO_IN);
58 
59     qio_channel_add_watch(QIO_CHANNEL(null),
60                           G_IO_IN | G_IO_OUT,
61                           test_io_channel_watch,
62                           &gotcond,
63                           NULL);
64 
65     g_main_context_iteration(NULL, false);
66 
67     g_assert(gotcond == (G_IO_IN | G_IO_OUT));
68 
69     qio_channel_close(QIO_CHANNEL(null), &error_abort);
70 
71     g_assert(qio_channel_write(QIO_CHANNEL(null),
72                                "Hello World", 11,
73                                &local_err) == -1);
74     g_assert_nonnull(local_err);
75 
76     g_clear_pointer(&local_err, error_free);
77 
78     g_assert(qio_channel_read(QIO_CHANNEL(null),
79                               buf, sizeof(buf),
80                               &local_err) == -1);
81     g_assert_nonnull(local_err);
82 
83     g_clear_pointer(&local_err, error_free);
84 }
85 
86 int main(int argc, char **argv)
87 {
88     module_call_init(MODULE_INIT_QOM);
89 
90     g_test_init(&argc, &argv, NULL);
91 
92     g_test_add_func("/io/channel/null/io", test_io_channel_null_io);
93 
94     return g_test_run();
95 }
96