WIP Add Webhooks controller, allowed IP config

spec/requests/webhooks_spec.rb

@@ -0,0 +1,20 @@
+require 'rails_helper'
+
+RSpec.describe "Webhooks", type: :request do
+  describe "Allowed IP addresses" do
+    context "IP not allowed" do
+      it "returns a 403 status" do
+        post "/webhooks/lndhub"
+        expect(response).to have_http_status(:forbidden)
+      end
+    end
+
+    context "IP allowed" do
+      it "returns a 403 status" do
+        ENV['WEBHOOKS_ALLOWED_IPS'] = '127.0.0.1'
+        post "/webhooks/lndhub"
+        expect(response).to have_http_status(:unprocessable_entity)
+      end
+    end
+  end
+end