tests/device-plug: Add CCW unplug test for s390x

As CCW unplugs are surprise removals without asking the guest first,
we can test this without any guest interaction.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190218092202.26683-5-david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 36 insertions, 5 deletions

diff --git a/tests/device-plug-test.c b/tests/device-plug-test.c
index cd9ada5..d1a6c94 100644
--- a/tests/device-plug-test.c
+++ b/tests/device-plug-test.c
@@ -15,17 +15,26 @@
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qstring.h"
 
-static void device_del_request(QTestState *qtest, const char *id)
+static void device_del_start(QTestState *qtest, const char *id)
 {
-    QDict *resp;
+    qtest_qmp_send(qtest,
+                   "{'execute': 'device_del', 'arguments': { 'id': %s } }", id);
+}
+
+static void device_del_finish(QTestState *qtest)
+{
+    QDict *resp = qtest_qmp_receive(qtest);
 
-    resp = qtest_qmp(qtest,
-                     "{'execute': 'device_del', 'arguments': { 'id': %s } }",
-                     id);
     g_assert(qdict_haskey(resp, "return"));
     qobject_unref(resp);
 }
 
+static void device_del_request(QTestState *qtest, const char *id)
+{
+    device_del_start(qtest, id);
+    device_del_finish(qtest);
+}
+
 static void system_reset(QTestState *qtest)
 {
     QDict *resp;
@@ -77,8 +86,25 @@ static void test_pci_unplug_request(void)
     qtest_quit(qtest);
 }
 
+static void test_ccw_unplug(void)
+{
+    QTestState *qtest = qtest_initf("-device virtio-balloon-ccw,id=dev0");
+
+    /*
+     * The DEVICE_DELETED events will be sent before the command
+     * completes.
+     */
+    device_del_start(qtest, "dev0");
+    wait_device_deleted_event(qtest, "dev0");
+    device_del_finish(qtest);
+
+    qtest_quit(qtest);
+}
+
 int main(int argc, char **argv)
 {
+    const char *arch = qtest_get_arch();
+
     g_test_init(&argc, &argv, NULL);
 
     /*
@@ -89,5 +115,10 @@ int main(int argc, char **argv)
     qtest_add_func("/device-plug/pci-unplug-request",
                    test_pci_unplug_request);
 
+    if (!strcmp(arch, "s390x")) {
+        qtest_add_func("/device-plug/ccw-unplug",
+                       test_ccw_unplug);
+    }
+
     return g_test_run();
 }