Has a valid factory test for event schedule

Has a valid factory test introduced for event schedule

spec/models/event_schedule_spec.rb

@@ -9,6 +9,10 @@ describe EventSchedule do
   end
 
   describe 'validation' do
+    it 'has a valid factory' do
+      expect(build(:event_schedule)).to be_valid
+    end
+
     it { is_expected.to validate_presence_of(:schedule) }
     it { is_expected.to validate_presence_of(:event) }
     it { is_expected.to validate_presence_of(:room) }