CybersourceREST - Refund | Credit

Description
-------------------------
This integration support the following payment operations:
- Refund
- Credit

Unit test
-------------------------
Finished in 29.776044 seconds.
5452 tests, 77126 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed

Remote test
-------------------------
183.10 tests/s, 2590.20 assertions/s

Rubocop
-------------------------
760 files inspected, no offenses detected

lib/active_merchant/billing/gateways/cyber_source_rest.rb

@@ -48,6 +48,22 @@ def authorize(money, payment, options = {})
         commit('/pts/v2/payments/', post)
       end
 
+      def refund(money, options = {})
+        post = build_refund_request(money, options)
+
+        yield post if block_given?
+
+        commit("/pts/v2/payments/#{options[:order_id]}/refunds", post)
+      end
+
+      def credit(money, payment, options = {})
+        post = build_credit_request(money, payment, options)
+
+        yield post if block_given?
+
+        commit('/pts/v2/credits', post)
+      end
+
       def supports_scrubbing?
         true
       end
@@ -74,6 +90,22 @@ def build_auth_request(amount, payment, options)
         end.compact
       end
 
+      def build_refund_request(amount, options)
+        { clientReferenceInformation: {}, orderInformation: {} }.tap do |post|
+          add_code(post, options)
+          add_amount(post, amount)
+        end.compact
+      end
+
+      def build_credit_request(amount, payment, options)
+        { clientReferenceInformation: {}, paymentInformation: {}, orderInformation: {} }.tap do |post|
+          add_code(post, options)
+          add_credit_card(post, payment)
+          add_amount(post, amount)
+          add_address(post, payment, options[:billing_address], options, :billTo)
+        end.compact
+      end
+
       def add_code(post, options)
         return unless options[:order_id].present?
 
@@ -161,7 +193,7 @@ def commit(action, post)
       end
 
       def success_from(response)
-        response['status'] == 'AUTHORIZED'
+        %w(AUTHORIZED PENDING).include?(response['status'])
       end
 
       def message_from(response)

test/remote/gateways/remote_cyber_source_rest_test.rb

@@ -70,6 +70,27 @@ def test_successful_purchase
     assert_nil response.params['_links']['capture']
   end
 
+  def test_successful_refund
+    purchase = @gateway.purchase(@amount, @visa_card, @options)
+    response = @gateway.refund(@amount, { order_id: purchase.authorization })
+
+    assert_success response
+    assert response.test?
+    assert_equal 'PENDING', response.message
+    assert response.params['id'].present?
+    assert_nil response.params['_links']['capture']
+  end
+
+  def test_successful_credit
+    response = @gateway.credit(@amount, @visa_card, @options)
+
+    assert_success response
+    assert response.test?
+    assert_equal 'PENDING', response.message
+    assert response.params['id'].present?
+    assert_nil response.params['_links']['capture']
+  end
+
   def test_transcript_scrubbing
     transcript = capture_transcript(@gateway) do
       @gateway.authorize(@amount, @visa_card, @options)