Spec backwards compatibility

app/models/integration.rb

@@ -44,7 +44,7 @@ class Integration < ApplicationRecord
     bamboo bugzilla buildkite
     campfire confluence custom_issue_tracker
     datadog discord drone_ci
-    emails_on_push ewm emails_on_push
+    emails_on_push ewm emails_on_push external_wiki
   ].to_set.freeze
 
   def self.renamed?(name)

spec/serializers/service_event_entity_spec.rb

@@ -5,7 +5,7 @@ require 'spec_helper'
 RSpec.describe ServiceEventEntity do
   let(:request) { double('request') }
 
-  subject { described_class.new(event, request: request, service: service).as_json }
+  subject { described_class.new(event, request: request, service: integration).as_json }
 
   before do
     allow(request).to receive(:service).and_return(integration)

spec/serializers/service_field_entity_spec.rb

@@ -56,6 +56,7 @@ RSpec.describe ServiceFieldEntity do
 
     context 'EmailsOnPush Service' do
       let(:integration) { create(:emails_on_push_integration, send_from_committer_email: '1') }
+      let(:service) { integration }
 
       context 'field with type checkbox' do
         let(:field) { integration.global_fields.find { |field| field[:name] == 'send_from_committer_email' } }