Add to setting mailchimp subscription option

app/models/user.rb

@@ -141,6 +141,8 @@ def generate_vpn_credentials
   end
 
   def add_to_newsletter
+    return unless Settings.mailchimp.subscription == 'true'
+
     AddUserToNewsletterWorker.perform_async(email, :all)
   end
 end

config/settings.yml

@@ -7,6 +7,7 @@ servers:
   sample_config_path: 'config/sample.server.ovpn.erb'
 
 mailchimp:
+  subscription: 'true'
   api_key: <%= ENV['MAILCHIMP_API_KEY'] %>
   all_clients_list_id: <%= ENV['MAILCHIMP_ALL_CLIENTS_LIST_ID'] %>
 

spec/models/user_spec.rb

@@ -246,10 +246,23 @@
   end
 
   describe 'newsletter subscription' do
-    it 'adds to newsletter' do
-      expect do
-        create(:user)
-      end.to change(AddUserToNewsletterWorker.jobs, :size).by(1)
+    let(:settings) { double('Settings.mailchimp') }
+    before { allow(Settings).to receive(:mailchimp).and_return(settings) }
+
+    context 'subscription set as true' do
+      before { expect(settings).to receive(:subscription).and_return('true') }
+
+      it 'adds to newsletter' do
+        expect { create(:user) }.to change(AddUserToNewsletterWorker.jobs, :size).by(1)
+      end
+    end
+
+    context 'subscription set as false' do
+      before { expect(settings).to receive(:subscription).and_return('false') }
+
+      it 'adds to newsletter' do
+        expect { create(:user) }.not_to change(AddUserToNewsletterWorker.jobs, :size)
+      end
     end
   end
 end