Do not give order cycle choice when there is only one option

app/views/spree/products/_add_to_cart.html.haml

@@ -17,14 +17,17 @@
 
       - if available_distributors.length > 1 || order.andand.distributor.nil?
         = render 'add_to_cart_distributor_choice', distributor_collection: available_distributors
-
       - else
         - distributor = available_distributors.first
         - changing_distributor = distributor != order.andand.distributor
         = render 'add_to_cart_distributor_fixed', distributor: distributor, changing_distributor: changing_distributor
 
-
-      = render 'add_to_cart_order_cycle_choice', order_cycle_collection: available_order_cycles
+      - if available_order_cycles.length > 1 || order.andand.order_cycle.nil?
+        = render 'add_to_cart_order_cycle_choice', order_cycle_collection: available_order_cycles
+      - else
+        - order_cycle = available_order_cycles.first
+        - changing_order_cycle = order_cycle != order.andand.order_cycle
+        = render 'add_to_cart_order_cycle_fixed', order_cycle: order_cycle, changing_order_cycle: changing_order_cycle
 
     %br
     = button_tag :class => 'large primary', :id => 'add-to-cart-button', :type => :submit do

app/views/spree/products/_add_to_cart_order_cycle_fixed.html.haml

@@ -0,0 +1,6 @@
+= hidden_field_tag "order_cycle_id", order_cycle.id
+
+- if changing_order_cycle
+  .order-cycle-fixed= "Your order cycle for this order will be changed to #{order_cycle.name} if you add this product to your cart."
+- else
+  .order-cycle-fixed= "Your order cycle for this order is #{order_cycle.name}"

spec/features/consumer/add_to_cart_spec.rb

@@ -247,6 +247,35 @@ feature %q{
         page.should have_selector "#current-distribution a", :text => d2.name
         page.should have_selector "#current-distribution a", :text => oc2.name
       end
+
+      it "when the only valid order cycle is the chosen one, does not allow the user to choose an order cycle" do
+        # Given two products, each at the same distributor
+        d = create(:distributor_enterprise)
+        p1 = create(:product)
+        p2 = create(:product)
+        oc = create(:simple_order_cycle, :distributors => [d],
+                    :variants => [p1.master, p2.master])
+
+        # When I add the first to my cart
+        visit spree.product_path p1
+        select d.name, :from => 'distributor_id'
+        select oc.name, :from => 'order_cycle_id'
+        click_button 'Add To Cart'
+
+        # And I go to add the second, I should not have a choice of distributor or order cycle
+        visit spree.product_path p2
+        page.should_not have_selector 'select#distributor_id'
+        page.should     have_selector '.distributor-fixed', :text => "Your distributor for this order is #{d.name}"
+        page.should_not have_selector 'select#order_cycle_id'
+        page.should     have_selector '.order-cycle-fixed', :text => "Your order cycle for this order is #{oc.name}"
+
+        # When I add the second, both should be in my cart
+        click_button 'Add To Cart'
+        visit spree.cart_path
+        page.should have_selector 'h4 a', :text => p1.name
+        page.should have_selector 'h4 a', :text => p2.name
+      end
+
     end
 
     it "allows us to add two products from the same distributor" do