add config_spec

spec/requests/api/config_spec.rb

@@ -0,0 +1,19 @@
+require 'swagger_helper'
+
+describe 'Navigation API', type: :request do
+  include ApiHelper
+
+  path '/config' do
+    get 'configuration variables' do
+      tags 'General'
+      produces 'application/json'
+      let(:api_scopes) { ['config:user'] }
+
+      response '200', 'success' do
+        run_test!
+      end
+
+      it_handles_invalid_token_and_scope
+    end
+  end
+end