From 87e42764490896e66ab8a3c93280384689b0acb4 Mon Sep 17 00:00:00 2001 From: "Daniel P. Berrangé" Date: Mon, 20 Jun 2022 12:01:45 +0100 Subject: io: add a QIOChannelNull equivalent to /dev/null MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is for code which needs a portable equivalent to a QIOChannelFile connected to /dev/null. Signed-off-by: Daniel P. Berrangé Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Signed-off-by: Dr. David Alan Gilbert --- tests/unit/test-io-channel-null.c | 95 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 tests/unit/test-io-channel-null.c (limited to 'tests/unit/test-io-channel-null.c') diff --git a/tests/unit/test-io-channel-null.c b/tests/unit/test-io-channel-null.c new file mode 100644 index 0000000000..b3aab17ccc --- /dev/null +++ b/tests/unit/test-io-channel-null.c @@ -0,0 +1,95 @@ +/* + * QEMU I/O channel null test + * + * Copyright (c) 2022 Red Hat, Inc. + * + * 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 . + * + */ + +#include "qemu/osdep.h" +#include "io/channel-null.h" +#include "qapi/error.h" + +static gboolean test_io_channel_watch(QIOChannel *ioc, + GIOCondition condition, + gpointer opaque) +{ + GIOCondition *gotcond = opaque; + *gotcond = condition; + return G_SOURCE_REMOVE; +} + +static void test_io_channel_null_io(void) +{ + g_autoptr(QIOChannelNull) null = qio_channel_null_new(); + char buf[1024]; + GIOCondition gotcond = 0; + Error *local_err = NULL; + + g_assert(qio_channel_write(QIO_CHANNEL(null), + "Hello World", 11, + &error_abort) == 11); + + g_assert(qio_channel_read(QIO_CHANNEL(null), + buf, sizeof(buf), + &error_abort) == 0); + + qio_channel_add_watch(QIO_CHANNEL(null), + G_IO_IN, + test_io_channel_watch, + &gotcond, + NULL); + + g_main_context_iteration(NULL, false); + + g_assert(gotcond == G_IO_IN); + + qio_channel_add_watch(QIO_CHANNEL(null), + G_IO_IN | G_IO_OUT, + test_io_channel_watch, + &gotcond, + NULL); + + g_main_context_iteration(NULL, false); + + g_assert(gotcond == (G_IO_IN | G_IO_OUT)); + + qio_channel_close(QIO_CHANNEL(null), &error_abort); + + g_assert(qio_channel_write(QIO_CHANNEL(null), + "Hello World", 11, + &local_err) == -1); + g_assert_nonnull(local_err); + + g_clear_pointer(&local_err, error_free); + + g_assert(qio_channel_read(QIO_CHANNEL(null), + buf, sizeof(buf), + &local_err) == -1); + g_assert_nonnull(local_err); + + g_clear_pointer(&local_err, error_free); +} + +int main(int argc, char **argv) +{ + module_call_init(MODULE_INIT_QOM); + + g_test_init(&argc, &argv, NULL); + + g_test_add_func("/io/channel/null/io", test_io_channel_null_io); + + return g_test_run(); +} -- cgit 1.4.1