Add frozen string literal header

ee/app/finders/epics/date_sourcing_milestones_finder.rb

+# frozen_string_literal: true
+
 module Epics
   class DateSourcingMilestonesFinder
     def self.execute(epic_id)

ee/spec/finders/epics/date_sourcing_milestones_finder_spec.rb

+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Epics::DateSourcingMilestonesFinder do
@@ -13,10 +15,12 @@ describe Epics::DateSourcingMilestonesFinder do
 
       results = described_class.execute(epic.id)
 
-      expect(results.start_date).to eq(milestone1.start_date)
-      expect(results.start_date_sourcing_milestone_id).to eq(milestone1.id)
-      expect(results.due_date).to eq(milestone2.due_date)
-      expect(results.due_date_sourcing_milestone_id).to eq(milestone2.id)
+      expect(results).to have_attributes(
+        start_date: milestone1.start_date,
+        start_date_sourcing_milestone_id: milestone1.id,
+        due_date: milestone2.due_date,
+        due_date_sourcing_milestone_id: milestone2.id
+      )
     end
 
     it 'returns date and id from single milestone' do
@@ -26,10 +30,12 @@ describe Epics::DateSourcingMilestonesFinder do
 
       results = described_class.execute(epic.id)
 
-      expect(results.start_date).to eq(milestone1.start_date)
-      expect(results.start_date_sourcing_milestone_id).to eq(milestone1.id)
-      expect(results.due_date).to eq(milestone1.due_date)
-      expect(results.due_date_sourcing_milestone_id).to eq(milestone1.id)
+      expect(results).to have_attributes(
+        start_date: milestone1.start_date,
+        start_date_sourcing_milestone_id: milestone1.id,
+        due_date: milestone1.due_date,
+        due_date_sourcing_milestone_id: milestone1.id
+      )
     end
 
     it 'returns date and id from milestone without date' do
@@ -39,10 +45,12 @@ describe Epics::DateSourcingMilestonesFinder do
 
       results = described_class.execute(epic.id)
 
-      expect(results.start_date).to eq(milestone1.start_date)
-      expect(results.start_date_sourcing_milestone_id).to eq(milestone1.id)
-      expect(results.due_date).to eq(nil)
-      expect(results.due_date_sourcing_milestone_id).to eq(nil)
+      expect(results).to have_attributes(
+        start_date: milestone1.start_date,
+        start_date_sourcing_milestone_id: milestone1.id,
+        due_date: nil,
+        due_date_sourcing_milestone_id: nil
+      )
     end
 
     it 'handles epics without milestone' do
@@ -50,10 +58,12 @@ describe Epics::DateSourcingMilestonesFinder do
 
       results = described_class.execute(epic.id)
 
-      expect(results.start_date).to eq(nil)
-      expect(results.start_date_sourcing_milestone_id).to eq(nil)
-      expect(results.due_date).to eq(nil)
-      expect(results.due_date_sourcing_milestone_id).to eq(nil)
+      expect(results).to have_attributes(
+        start_date: nil,
+        start_date_sourcing_milestone_id: nil,
+        due_date: nil,
+        due_date_sourcing_milestone_id: nil
+      )
     end
   end
 end

ee/spec/migrations/update_epic_dates_from_milestones_spec.rb

+# frozen_string_literal: true
+
 require 'spec_helper'
 require Rails.root.join('ee', 'db', 'post_migrate', '20180713171825_update_epic_dates_from_milestones.rb')