Remove use of deprecated rspec syntax

spec/controllers/enterprises_controller_spec.rb

@@ -1,11 +1,6 @@
 require 'spec_helper'
 
 describe EnterprisesController do
-  before :each do
-    stub!(:before_save_new_order)
-    stub!(:after_save_new_order)
-  end
-
   it "displays suppliers" do
     s = create(:supplier_enterprise)
     d = create(:distributor_enterprise)

spec/helpers/products_helper_spec.rb

@@ -22,13 +22,8 @@ module Spree
 
     private
     def make_variant_stub(product_price, variant_price)
-      product = stub(:product)
-      product.stub(:price).and_return(product_price)
-
-      variant = stub(:variant)
-      variant.stub(:product).and_return(product)
-      variant.stub(:price).and_return(variant_price)
-
+      product = double(:product, price: product_price)
+      variant = double(:variant, product: product, price: variant_price)
       variant
     end
   end

spec/lib/open_food_web/split_products_by_distribution_spec.rb

@@ -66,15 +66,8 @@ describe OpenFoodWeb::SplitProductsByDistribution do
   def build_product(distributor, in_distributor, order_cycle, in_order_cycle)
     product = double(:product)
 
-    if distributor
-      product.should_receive(:in_distributor?).any_number_of_times.
-        with(distributor).and_return(in_distributor)
-    end
-
-    if order_cycle
-      product.should_receive(:in_order_cycle?).any_number_of_times.
-        with(order_cycle).and_return(in_order_cycle)
-    end
+    product.stub(:in_distributor?) { in_distributor } if distributor
+    product.stub(:in_order_cycle?) { in_order_cycle } if order_cycle
 
     product
   end