Adds attr_reader :customs_declaration (#34)

* Adds `attr_reader :customs_declaration` to `Shipment`

Author: matiasalbarello

CHANGELOG.md

@@ -2,7 +2,7 @@
 ### Added
 - Add attr_reader for `id` to class `Shipcloud::Address` to be able to get the id of a created address
 - Add attr_reader for `id` to class `Shipcloud::Webhook` to be able to get the id of a created webhook
-
+- Add attr_reader for `customs_declaration` to class `Shipcloud::Shipment` to be able to get the `customs_declaration` of a created shipment
 ### Changed
 
 ### Deprecated

lib/shipcloud/shipment.rb

@@ -5,7 +5,8 @@ class Shipment < Base
     include Shipcloud::Operations::All
 
     attr_accessor :from, :to, :carrier, :package, :reference_number, :metadata
-    attr_reader :id, :created_at, :carrier_tracking_no, :tracking_url, :label_url, :packages, :price
+    attr_reader :id, :created_at, :carrier_tracking_no, :tracking_url, :label_url,
+                :packages, :price, :customs_declaration
 
     def self.index_response_root
       "#{class_name.downcase}s"

spec/shipcloud/shipment_spec.rb

@@ -27,7 +27,11 @@
           id: "123456",
           name: "bar"
         }
-      }
+      },
+      customs_declaration: {
+        id: "123456",
+        contents_type: "commercial_goods",
+      },
     }
   end
 
@@ -51,6 +55,9 @@
       expect(shipment.package[:length]).to eq 40
       expect(shipment.package[:width]).to eq 20
       expect(shipment.package[:height]).to eq 20
+
+      expect(shipment.customs_declaration[:id]).to eq "123456"
+      expect(shipment.customs_declaration[:contents_type]).to eq "commercial_goods"
     end
 
     it "initializes the metadata correctly" do