a little more testing

spec/app/models/server_spec.rb

@@ -0,0 +1,14 @@
+require 'rails_helper'
+
+describe Server do
+
+  context "model" do
+    subject(:server) { create(:server) }
+
+    it "should have a UUID" do
+      expect(server.uuid).to be_a String
+      expect(server.uuid.length).to eq 36
+    end
+  end
+
+end