create group buy report, display header

lib/open_food_web/group_buy_report.rb

@@ -0,0 +1,11 @@
+module OpenFoodWeb
+  class GroupBuyReport
+    def initialize orders
+      @orders = orders
+    end
+
+    def header
+      ["Supplier", "Product", "Unit Size", "Variant", "Weight", "Total Ordered", "Total Max"]
+    end
+  end
+end

spec/lib/open_food_web/group_buy_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+module OpenFoodWeb
+  describe GroupBuyReport do
+
+    before(:each) do
+      @bill_address = create(:address)
+      @distributor_address = create(:address, :address1 => "distributor address", :city => 'The Shire', :zipcode => "1234")
+      @distributor = create(:distributor, :pickup_address => @distributor_address)
+      product = create(:product)
+      product_distribution = create(:product_distribution, :product => product, :distributor => @distributor, :shipping_method => create(:shipping_method))
+      @shipping_instructions = "pick up on thursday please!"
+      @order = create(:order, :distributor => @distributor, :bill_address => @bill_address, :special_instructions => @shipping_instructions)
+      @payment_method = create(:payment_method)
+      payment = create(:payment, :payment_method => @payment_method, :order => @order )
+      @order.payments << payment
+      @line_item = create(:line_item, :product => product, :order => @order)
+      @order.line_items << @line_item
+    end
+
+    it "should return a header row describing the report" do
+      subject = GroupBuyReport.new [@order]
+
+      header = subject.header
+      header.should == ["Supplier", "Product", "Unit Size", "Variant", "Weight", "Total Ordered", "Total Max"]
+    end
+
+  end
+end