diff --git a/web/gui/src/test/_karma/ev/devices/scenario.json b/web/gui/src/test/_karma/ev/devices/scenario.json
new file mode 100644
index 0000000..ee3c1ea
--- /dev/null
+++ b/web/gui/src/test/_karma/ev/devices/scenario.json
@@ -0,0 +1,12 @@
+{
+  "comments": [
+    "Showing all device types"
+  ],
+  "title": "Show Device Types",
+  "params": {
+    "lastAuto": 16
+  },
+  "description": [
+    "Show all device types."
+  ]
+}