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tests/unit/test-char: implement a few mux remove test cases

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This patch tests:

1. feasibility of removing mux which does not have frontends attached
   or frontends were prior detached.
2. inability to remove mux which has frontends attached (mux is "busy")

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: qemu-devel@nongnu.org
[ fixed *error leak ]
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20241014152408.427700-9-r.peniaev@gmail.com>
This commit is contained in:
Roman Penyaev 2024-10-14 17:24:08 +02:00 committed by Marc-André Lureau
parent 327993f180
commit 95806c7bee
1 changed files with 23 additions and 1 deletions
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24
tests/unit/test-char.c
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@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include <glib/gstdio.h>
#include "qapi/error.h"
#include "qemu/config-file.h"
#include "qemu/module.h"
#include "qemu/option.h"
@ -184,6 +185,21 @@ static void char_mux_test(void)
char *data;
FeHandler h1 = { 0, false, 0, false, }, h2 = { 0, false, 0, false, };
CharBackend chr_be1, chr_be2;
Error *error = NULL;
/* Create mux and chardev to be immediately removed */
opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
1, &error_abort);
qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
qemu_opt_set(opts, "size", "128", &error_abort);
qemu_opt_set(opts, "mux", "on", &error_abort);
chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
g_assert_nonnull(chr);
qemu_opts_del(opts);
/* Remove just created mux and chardev */
qmp_chardev_remove("mux-label", &error_abort);
qmp_chardev_remove("mux-label-base", &error_abort);
opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
1, &error_abort);
@ -334,7 +350,13 @@ static void char_mux_test(void)
g_free(data);
qemu_chr_fe_deinit(&chr_be1, false);
qemu_chr_fe_deinit(&chr_be2, true);
qmp_chardev_remove("mux-label", &error);
g_assert_cmpstr(error_get_pretty(error), ==, "Chardev 'mux-label' is busy");
error_free(error);
qemu_chr_fe_deinit(&chr_be2, false);
qmp_chardev_remove("mux-label", &error_abort);
}