Modify customer address validation to allow no address on Windows flavor

lib/quickeebooks/windows/model/customer.rb

@@ -128,8 +128,8 @@ def email_address_is_valid
         end
 
         def require_an_address
-          if addresses.nil? || (addresses.is_a?(Array) && addresses.empty?)
-            errors.add(:addresses, "Must provide at least one address for this Customer.")
+          if (addresses.is_a?(Array) && addresses.empty?)
+            errors.add(:addresses, "Cannot send an empty address.")
           end
         end
 

spec/quickeebooks/windows/services/customer_spec.rb

@@ -90,12 +90,13 @@
     customer.errors.keys.include?(:name).should == true
   end
 
-  it "cannot create a customer with no address" do
+  it "cannot create a customer with an empty address" do
     customer = Quickeebooks::Windows::Model::Customer.new
     service = Quickeebooks::Windows::Service::Customer.new
     service.access_token = @oauth
     service.realm_id = @realm_id
     customer.name = "Bobs Plumbing"
+    customer.addresses = []
     lambda do
       service.create(customer)
     end.should raise_error(InvalidModelException)
@@ -104,6 +105,15 @@
     customer.errors.keys.include?(:addresses).should == true
   end
 
+  it "can create a customer with no address" do
+    customer = Quickeebooks::Windows::Model::Customer.new
+    service = Quickeebooks::Windows::Service::Customer.new
+    service.access_token = @oauth
+    service.realm_id = @realm_id
+    customer.name = "Bobs Plumbing"
+    customer.valid?.should == true
+  end
+
   it "cannot create a customer with an invalid email" do
     customer = Quickeebooks::Windows::Model::Customer.new
     service = Quickeebooks::Windows::Service::Customer.new