add specs

spec/lib/insert/insert_donation_spec.rb

@@ -122,6 +122,10 @@
 						ObjectEvent.where(event_type: 'stripe_transaction_charge.created').count
 						}.by 1
 				end
+
+				it 'creates a subtransaction_payment whose creation date matches the legacy payment\'s date' do
+					expect(result['payment'].subtransaction_payment.created).to eq(result['payment'].date)
+				end
       end
 
 			describe 'campaign donation' do
@@ -142,6 +146,10 @@
 						ObjectEvent.where(event_type: 'stripe_transaction_charge.created').count
 						}.by 1
 				end
+
+				it 'creates a subtransaction_payment whose creation date matches the legacy payment\'s date' do
+					expect(result['payment'].subtransaction_payment.created).to eq(result['payment'].date)
+				end
 			end
 			describe 'general donation' do
 				let(:result) { InsertDonation.with_stripe(amount: charge_amount, nonprofit_id: nonprofit.id, supporter_id: supporter.id, token: source_token.token, profile_id: profile.id, date: (Time.now + 1.day).to_s, dedication: 'dedication', designation: 'designation')}