[PATCH 2/5] tests: Add tests for yank with the chardev-change

[Lukas Straub <lukasstraub2@web.de>]

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Add tests for yank with the chardev-change case.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
---
 MAINTAINERS            |   1 +
 tests/unit/meson.build |   3 +-
 tests/unit/test-yank.c | 240 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 243 insertions(+), 1 deletion(-)
 create mode 100644 tests/unit/test-yank.c

diff --git a/MAINTAINERS b/MAINTAINERS
index aa024eed17..a8a7f0d1c2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2817,6 +2817,7 @@ F: monitor/yank.c
 F: stubs/yank.c
 F: include/qemu/yank.h
 F: qapi/yank.json
+F: tests/unit/test-yank.c

 COLO Framework
 M: zhanghailiang <zhang.zhanghailiang@huawei.com>
diff --git a/tests/unit/meson.build b/tests/unit/meson.build
index 8ccf60af66..38e5dba920 100644
--- a/tests/unit/meson.build
+++ b/tests/unit/meson.build
@@ -123,7 +123,8 @@ if have_system
     'test-util-sockets': ['socket-helpers.c'],
     'test-base64': [],
     'test-bufferiszero': [],
-    'test-vmstate': [migration, io, '../../monitor/yank.c']
+    'test-vmstate': [migration, io, '../../monitor/yank.c'],
+    'test-yank': ['socket-helpers.c', qom, io, chardev, '../../monitor/yank.c']
   }
   if 'CONFIG_INOTIFY1' in config_host
     tests += {'test-util-filemonitor': []}
diff --git a/tests/unit/test-yank.c b/tests/unit/test-yank.c
new file mode 100644
index 0000000000..44f24c45a8
--- /dev/null
+++ b/tests/unit/test-yank.c
@@ -0,0 +1,240 @@
+#include "qemu/osdep.h"
+#include <glib/gstdio.h>
+
+#include "qemu/config-file.h"
+#include "qemu/module.h"
+#include "qemu/option.h"
+#include "qemu/sockets.h"
+#include "chardev/char-fe.h"
+#include "sysemu/sysemu.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-char.h"
+#include "qapi/qmp/qdict.h"
+#include "qom/qom-qobject.h"
+#include "io/channel-socket.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qapi/qapi-visit-sockets.h"
+#include "socket-helpers.h"
+#include "qapi/qapi-commands-yank.h"
+#include "qapi/qapi-types-yank.h"
+
+static int chardev_change(void *opaque)
+{
+    return 0;
+}
+
+static bool is_yank_instance_registered(void)
+{
+    YankInstanceList *list;
+    bool ret;
+
+    list = qmp_query_yank(&error_abort);
+
+    ret = !!list;
+
+    qapi_free_YankInstanceList(list);
+
+    return ret;
+}
+
+static void char_change_to_yank_test(gconstpointer opaque)
+{
+    SocketAddress *addr = (gpointer) opaque;
+    Chardev *chr;
+    CharBackend be;
+    ChardevReturn *ret;
+    QIOChannelSocket *ioc;
+
+    /*
+     * Setup a listener socket and determine its address
+     * so we know the TCP port for the client later
+     */
+    ioc = qio_channel_socket_new();
+    g_assert_nonnull(ioc);
+    qio_channel_socket_listen_sync(ioc, addr, 1, &error_abort);
+    addr = qio_channel_socket_get_local_address(ioc, &error_abort);
+    g_assert_nonnull(addr);
+
+    ChardevBackend old_backend = { .type = CHARDEV_BACKEND_KIND_NULL };
+    ChardevBackend new_backend = {
+            .type = CHARDEV_BACKEND_KIND_SOCKET,
+            .u.socket.data = &(ChardevSocket) {
+                .addr = &(SocketAddressLegacy) {
+                    .type = SOCKET_ADDRESS_LEGACY_KIND_INET,
+                    .u.inet.data = &addr->u.inet
+                },
+                .has_server = true,
+                .server = false
+            } };
+
+    g_assert(!is_yank_instance_registered());
+
+    ret = qmp_chardev_add("chardev", &old_backend, &error_abort);
+    qapi_free_ChardevReturn(ret);
+    chr = qemu_chr_find("chardev");
+    g_assert_nonnull(chr);
+
+    g_assert(!is_yank_instance_registered());
+
+    qemu_chr_wait_connected(chr, &error_abort);
+    qemu_chr_fe_init(&be, chr, &error_abort);
+    /* allow chardev-change */
+    qemu_chr_fe_set_handlers(&be, NULL, NULL,
+                             NULL, chardev_change, NULL, NULL, true);
+
+    ret = qmp_chardev_change("chardev", &new_backend, &error_abort);
+    g_assert_nonnull(ret);
+    g_assert(be.chr != chr);
+    g_assert(is_yank_instance_registered());
+
+    object_unparent(OBJECT(be.chr));
+    object_unref(OBJECT(ioc));
+    qapi_free_ChardevReturn(ret);
+}
+
+static void char_change_yank_to_yank_test(gconstpointer opaque)
+{
+    SocketAddress *addr = (gpointer) opaque;
+    Chardev *chr;
+    CharBackend be;
+    ChardevReturn *ret;
+    QIOChannelSocket *ioc;
+
+    /*
+     * Setup a listener socket and determine its address
+     * so we know the TCP port for the client later
+     */
+    ioc = qio_channel_socket_new();
+    g_assert_nonnull(ioc);
+    qio_channel_socket_listen_sync(ioc, addr, 1, &error_abort);
+    addr = qio_channel_socket_get_local_address(ioc, &error_abort);
+    g_assert_nonnull(addr);
+
+    ChardevBackend backend = {
+            .type = CHARDEV_BACKEND_KIND_SOCKET,
+            .u.socket.data = &(ChardevSocket) {
+                .addr = &(SocketAddressLegacy) {
+                    .type = SOCKET_ADDRESS_LEGACY_KIND_INET,
+                    .u.inet.data = &addr->u.inet
+                },
+                .has_server = true,
+                .server = false
+            } };
+
+    g_assert(!is_yank_instance_registered());
+
+    ret = qmp_chardev_add("chardev", &backend, &error_abort);
+    qapi_free_ChardevReturn(ret);
+    chr = qemu_chr_find("chardev");
+    g_assert_nonnull(chr);
+
+    g_assert(is_yank_instance_registered());
+
+    qemu_chr_wait_connected(chr, &error_abort);
+    qemu_chr_fe_init(&be, chr, &error_abort);
+    /* allow chardev-change */
+    qemu_chr_fe_set_handlers(&be, NULL, NULL,
+                             NULL, chardev_change, NULL, NULL, true);
+
+    ret = qmp_chardev_change("chardev", &backend, &error_abort);
+    g_assert_nonnull(ret);
+    g_assert(be.chr != chr);
+    g_assert(is_yank_instance_registered());
+
+    object_unparent(OBJECT(be.chr));
+    object_unref(OBJECT(ioc));
+    qapi_free_ChardevReturn(ret);
+}
+
+static void char_change_from_yank_test(gconstpointer opaque)
+{
+    SocketAddress *addr = (gpointer) opaque;
+    Chardev *chr;
+    CharBackend be;
+    ChardevReturn *ret;
+    QIOChannelSocket *ioc;
+
+    /*
+     * Setup a listener socket and determine its address
+     * so we know the TCP port for the client later
+     */
+    ioc = qio_channel_socket_new();
+    g_assert_nonnull(ioc);
+    qio_channel_socket_listen_sync(ioc, addr, 1, &error_abort);
+    addr = qio_channel_socket_get_local_address(ioc, &error_abort);
+    g_assert_nonnull(addr);
+
+    ChardevBackend old_backend = {
+            .type = CHARDEV_BACKEND_KIND_SOCKET,
+            .u.socket.data = &(ChardevSocket) {
+                .addr = &(SocketAddressLegacy) {
+                    .type = SOCKET_ADDRESS_LEGACY_KIND_INET,
+                    .u.inet.data = &addr->u.inet
+                },
+                .has_server = true,
+                .server = false
+            } };
+    ChardevBackend new_backend = { .type = CHARDEV_BACKEND_KIND_NULL };
+
+    g_assert(!is_yank_instance_registered());
+
+    ret = qmp_chardev_add("chardev", &old_backend, &error_abort);
+    qapi_free_ChardevReturn(ret);
+    chr = qemu_chr_find("chardev");
+    g_assert_nonnull(chr);
+
+    g_assert(is_yank_instance_registered());
+
+    qemu_chr_wait_connected(chr, &error_abort);
+    qemu_chr_fe_init(&be, chr, &error_abort);
+    /* allow chardev-change */
+    qemu_chr_fe_set_handlers(&be, NULL, NULL,
+                             NULL, chardev_change, NULL, NULL, true);
+
+    ret = qmp_chardev_change("chardev", &new_backend, &error_abort);
+    g_assert_nonnull(ret);
+    g_assert(be.chr != chr);
+    g_assert(!is_yank_instance_registered());
+
+    object_unparent(OBJECT(be.chr));
+    object_unref(OBJECT(ioc));
+    qapi_free_ChardevReturn(ret);
+}
+
+static SocketAddress tcpaddr = {
+    .type = SOCKET_ADDRESS_TYPE_INET,
+    .u.inet.host = (char *)"127.0.0.1",
+    .u.inet.port = (char *)"0",
+};
+
+int main(int argc, char **argv)
+{
+    bool has_ipv4, has_ipv6;
+
+    qemu_init_main_loop(&error_abort);
+    socket_init();
+
+    g_test_init(&argc, &argv, NULL);
+
+    if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
+        g_printerr("socket_check_protocol_support() failed\n");
+        goto end;
+    }
+
+    if (!has_ipv4) {
+        goto end;
+    }
+
+    module_call_init(MODULE_INIT_QOM);
+    qemu_add_opts(&qemu_chardev_opts);
+
+    g_test_add_data_func("/yank/char_change_to_yank", &tcpaddr,
+                         char_change_to_yank_test);
+    g_test_add_data_func("/yank/char_change_yank_to_yank", &tcpaddr,
+                         char_change_yank_to_yank_test);
+    g_test_add_data_func("/yank/char_change_from_yank", &tcpaddr,
+                         char_change_from_yank_test);
+
+end:
+    return g_test_run();
+}
--
2.30.2


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