Merge pull request #68 from mstruve/void-authorized-payments

Add #void! Method

lib/paypal/express/request.rb

@@ -69,6 +69,16 @@ def capture!(authorization_id, amount, currency_code)
         Response.new response
       end
 
+      def void!(authorization_id, params={})
+        params = {
+          :AUTHORIZATIONID => authorization_id,
+          :NOTE => params[:note]
+        }
+
+        response = self.request :DoVoid, params
+        Response.new response
+      end
+
       # Recurring Payment Specific
 
       def subscribe!(token, recurring_profile)

spec/fake_response/DoVoid/success.txt

@@ -0,0 +1 @@
+ACK=Success&AUTHORIZATIONID=1a2b3c4d5e6f&BUILD=13055236&TIMESTAMP=2014-10-03T17%3A34%3A56Z

spec/paypal/express/request_spec.rb

@@ -287,6 +287,26 @@ def post_with_logging(method, params)
     end
   end
 
+  describe "#void!" do
+    it 'should return Paypal::Express::Response' do
+      fake_response 'DoVoid/success'
+      response = instance.void! 'authorization_id', note: "note"
+      response.should be_instance_of Paypal::Express::Response
+    end
+
+    it 'should call DoVoid' do
+      expect do
+        instance.void! 'authorization_id', note: "note"
+      end.to request_to nvp_endpoint, :post
+
+      instance._method_.should == :DoVoid
+      instance._sent_params_.should == {
+        :AUTHORIZATIONID => 'authorization_id',
+        :NOTE => "note"
+      }
+    end
+  end
+
   describe '#checkout!' do
     it 'should return Paypal::Express::Response' do
       fake_response 'DoExpressCheckoutPayment/success'