Fix spec

modules/debts_api/spec/lib/debt_api/v0/fsr_form_transform/installment_contracts_other_debts_calculator_spec.rb

@@ -47,13 +47,14 @@ def get_data
         expect(calculator_data['spouseFullName']['last']).to eq('')
       end
 
-      # it 'returns empty string for creditorName' do
-      #   pre_form_data['installment_contracts_and_other_debts']['creditor_name'] = nil
-      #   calculator = described_class.new(pre_form_data)
-      #   calculator_data = calculator.get_data
-      #
-      #   expect(calculator_data['installmentContractsAndOtherDebts']['creditorName']).to eq('')
-      # end
+      it 'returns empty string for creditorName' do
+        pre_form_data['installment_contracts'].first['creditor_name'] = nil
+        calculator = described_class.new(pre_form_data)
+        calculator_data = calculator.get_data
+
+        creditor_names = calculator_data.map { |calc_datum| calc_datum['creditorName'] }
+        expect(creditor_names).to eq(['', ''])
+      end
     end
   end
 end