Merge pull request #103 from ryanhertz/listing-cart-methods

added a few methods to ListingCart

Author: ryanhertz

lib/spark_api/models/listing_cart.rb

@@ -15,6 +15,7 @@ def initialize(attributes={})
       def ListingIds=(listing_ids)
         write_attribute("ListingIds", Array(listing_ids))
       end
+
       def Name=(name)
         write_attribute("Name", name)
       end
@@ -27,6 +28,16 @@ def path
         end
       end
 
+      def filter
+        "ListingCart Eq '#{self.Id}'"
+      end
+
+      def listings(args = {})
+        return [] if attributes["ListingIds"].nil?
+        arguments = {:_filter => self.filter}.merge(args)
+        Listing.collect(connection.get("/listingcarts/#{self.Id}/listings", arguments))
+      end
+
       def add_listing(listing)
         ids = listing.respond_to?(:Id) ? listing.Id : listing
         results = connection.post("#{self.resource_uri}", {"ListingIds" => Array(ids)})
@@ -52,6 +63,10 @@ def self.portal(arguments={})
           collect(connection.get("/#{self.element_name}/portal", arguments))
       end
 
+      def deletable?
+        !attributes.has_key?("PortalCartType") || self.PortalCartType == "Custom"
+      end
+
     end
   end
 end

spec/unit/spark_api/models/listing_cart_spec.rb

@@ -133,4 +133,44 @@
     end
   end
 
+  describe "#listings" do 
+    it "should return the listings in the cart" do 
+      resource = subject.class.new Id: 5, ListingIds: ["1234"]
+      stub_api_get("/#{subject.class.element_name}/#{resource.Id}/listings", 'listings/multiple.json', 
+        :_filter => resource.filter)
+      resource.listings.should be_a(Array)
+      resource.listings.first.should be_a(Listing)
+    end
+
+    it "should return an empty array if there aren't any listings" do 
+      resource = subject.class.new Id: 5
+      resource.listings.should be_a(Array)
+      resource.listings.count.should === 0
+    end
+  end
+
+  describe "filter" do
+    it "should return a filter string for the cart" do
+      resource = subject.class.new Id: 5
+      resource.filter.should eq("ListingCart Eq '5'")
+    end
+  end
+
+  describe "#deletable?" do
+    it "should return true for private custom carts" do
+      resource = subject.class.new
+      expect(resource.deletable?).to be_true
+    end
+    
+    it "should return true for custom vow carts" do
+      resource = subject.class.new PortalCartType: "Custom"
+      expect(resource.deletable?).to be_true
+    end
+
+    it "should return false for vow carts" do
+      resource = subject.class.new PortalCartType: "Favorites"
+      expect(resource.deletable?).to be_false
+    end
+  end
+
 end