Adicionado método para listar itens associados a uma assinatura. (#12)

* Adicionado método para listar itens associados a uma assinatura.

lib/vindi/rest/subscription.rb

@@ -80,6 +80,16 @@ def reactivate_subscription(subscription_id, options = {})
       def delete_subscription(subscription_id, options = {})
         delete("subscriptions/#{subscription_id}", options)[:subscription]
       end
+
+      # List product items for a subscription
+      #
+      # @params subscription_id
+      # @see https://vindi.github.io/api-docs/dist/#!/subscriptions/GET_version_subscriptions_id_product_items_format
+      # @example List subscription product items #2
+      #   client.list_subscription_product_items(2)
+      def list_subscription_product_items(subscription_id, options = {})
+        get("subscriptions/#{subscription_id}/product_items", options)[:product_items]
+      end
     end
   end
 end

lib/vindi/version.rb

@@ -1,3 +1,3 @@
 module Vindi
-  VERSION = '0.0.4'
+  VERSION = '0.0.5'
 end

spec/vindi/rest/subscription_spec.rb

@@ -77,4 +77,14 @@
       end
     end
   end
+
+  describe 'list_subscription_product_items' do
+    it 'returns the associated product items of subscription' do
+      VCR.use_cassette("rest/subscriptions/list_subscription_product_items") do
+        product_items = client.list_subscription_product_items(91327)
+        assert_requested :get, vindi_url("subscriptions/91327/product_items")
+        expect(product_items).to be_kind_of(Array)
+      end
+    end
+  end
 end