diff --git a/web/gui/src/test/_karma/ev/mojo/ev_25_updDevice_C_online.json b/web/gui/src/test/_karma/ev/mojo/ev_25_updDevice_C_online.json
new file mode 100644
index 0000000..3f371dc
--- /dev/null
+++ b/web/gui/src/test/_karma/ev/mojo/ev_25_updDevice_C_online.json
@@ -0,0 +1,23 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffff000c",
+    "type": "switch",
+    "online": true,
+    "master": "ONOS-3",
+    "x-location": {
+      "type": "lnglat",
+      "lat": 37.7833,
+      "lng": -118.4167
+    },
+    "labels": [
+      "",
+      "sw-C",
+      "0000ffffffff000c"
+    ],
+    "metaUi": {
+      "x": 920,
+      "y": 360
+    }
+  }
+}