Fix virsystemdtest for previous commit

The change to query org.freedesktop.DBus.ListActivatableNames
to detect systemd broke the test suite, since we did not have
stubs to respond to this dbus call.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

tests/virsystemdmock.c

@@ -65,29 +65,47 @@ dbus_bool_t dbus_message_set_reply_serial(DBusMessage *message ATTRIBUTE_UNUSED,
 }
 
 DBusMessage *dbus_connection_send_with_reply_and_block(DBusConnection *connection ATTRIBUTE_UNUSED,
-                                                       DBusMessage *message ATTRIBUTE_UNUSED,
+                                                       DBusMessage *message,
                                                        int timeout_milliseconds ATTRIBUTE_UNUSED,
-                                                       DBusError *error)
+                                                       DBusError *error ATTRIBUTE_UNUSED)
 {
     DBusMessage *reply = NULL;
+    const char *service = dbus_message_get_destination(message);
 
-    if (getenv("FAIL_BAD_SERVICE")) {
-        DBusMessageIter iter;
-        const char *error_message = "Something went wrong creating the machine";
-        if (!(reply = dbus_message_new(DBUS_MESSAGE_TYPE_ERROR)))
-            return NULL;
-        dbus_message_set_error_name(reply, "org.freedesktop.systemd.badthing");
-        dbus_message_iter_init_append(reply, &iter);
-        if (!dbus_message_iter_append_basic(&iter,
-                                            DBUS_TYPE_STRING,
-                                            &error_message)) {
-            dbus_message_unref(reply);
-            return NULL;
+    if (STREQ(service, "org.freedesktop.machine1")) {
+        if (getenv("FAIL_BAD_SERVICE")) {
+            DBusMessageIter iter;
+            const char *error_message = "Something went wrong creating the machine";
+            if (!(reply = dbus_message_new(DBUS_MESSAGE_TYPE_ERROR)))
+                return NULL;
+            dbus_message_set_error_name(reply, "org.freedesktop.systemd.badthing");
+            dbus_message_iter_init_append(reply, &iter);
+            if (!dbus_message_iter_append_basic(&iter,
+                                                DBUS_TYPE_STRING,
+                                                &error_message)) {
+                dbus_message_unref(reply);
+                return NULL;
+            }
+        } else {
+            reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
         }
-    } else if (getenv("FAIL_NO_SERVICE")) {
-        dbus_set_error(error,
-                       "org.freedesktop.DBus.Error.ServiceUnknown",
-                       "%s", "The name org.freedesktop.machine1 was not provided by any .service files");
+    } else if (STREQ(service, "org.freedesktop.DBus")) {
+        const char *svc1 = "org.foo.bar.wizz";
+        const char *svc2 = "org.freedesktop.machine1";
+        DBusMessageIter iter, sub;
+        reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
+        dbus_message_iter_init_append(reply, &iter);
+        dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
+                                         "s", &sub);
+
+        dbus_message_iter_append_basic(&sub,
+                                       DBUS_TYPE_STRING,
+                                       &svc1);
+        if (!getenv("FAIL_NO_SERVICE"))
+            dbus_message_iter_append_basic(&sub,
+                                           DBUS_TYPE_STRING,
+                                           &svc2);
+        dbus_message_iter_close_container(&iter, &sub);
     } else {
         reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
     }

tests/virsystemdtest.c

@@ -94,9 +94,11 @@ static int testCreateNoSystemd(const void *opaque ATTRIBUTE_UNUSED)
                                       123,
                                       false,
                                       NULL)) == 0) {
+        unsetenv("FAIL_NO_SERVICE");
         fprintf(stderr, "%s", "Unexpected create machine success\n");
         return -1;
     }
+    unsetenv("FAIL_NO_SERVICE");
 
     if (rv != -2) {
         fprintf(stderr, "%s", "Unexpected create machine error\n");
@@ -126,9 +128,11 @@ static int testCreateBadSystemd(const void *opaque ATTRIBUTE_UNUSED)
                                       123,
                                       false,
                                       NULL)) == 0) {
+        unsetenv("FAIL_BAD_SERVICE");
         fprintf(stderr, "%s", "Unexpected create machine success\n");
         return -1;
     }
+    unsetenv("FAIL_BAD_SERVICE");
 
     if (rv != -1) {
         fprintf(stderr, "%s", "Unexpected create machine error\n");