[RSpec] Not getting redirect from ProductController

fehi-rspec.rb

==== products_controller_spec.rb =====

describe ProductsController, "Handling POST for create" do
  def sign_in_user
    user = FactoryGirl.create(:user)
    sign_in user, @user
  end

  def do_post
    post :create, :product => @params
  end
  before do
    @product = mock_model(Product, :save => true)
    Product.stub!(:create).and_return(@product)
    @params =  FactoryGirl.attributes_for(:product)
  end

  it "should redirect to products after success" do 
     sign_in_user
     do_post
     pending "need to figure out why redirect fails"
     response.should redirect_to(products_path)
  end
end

===== Controller =====
  def create
    @product = Product.new(params[:product])
    if !@product.valid?
      flash.now[:error] = ("The product was not added: <br><li>" + @product.errors.full_messages.join("<li>")).html_safe
      render "new"
    else
      if @product.save
        redirect_to products_path, :notice => "Product created successfully!"
      else
        flash.now[:error] = ("There were issues adding the product to the database. Please retry")
        render "new"
      end
    end
  end

=== Factory Girl===

FactoryGirl.define do
  factory :product do
    name "Example Product"
    description "This is an example!"
    price "9.99"
    inventory 1
    product_image { File.open(File.join(Rails.root, 'spec', 'support', 'uploads', '1000x450.jpeg')) }
  end
end

===== Output from test.log =====

819    (0.0ms)  RELEASE SAVEPOINT active_record_1
820 Processing by ProductsController#create as HTML
821   Parameters: {"product"=>{"name"=>"Fruit Mania", "description"=>"The mania that is taking over the planet!", "price"=>"9.99", "inventory"=>"1", "product_image"=>"#<File:0x00
822   User Load (0.2ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
823   Product Exists (0.1ms)  SELECT 1 AS one FROM "products" WHERE LOWER("products"."name") = LOWER('Fruit Mania') LIMIT 1
824 Completed 200 OK in 8ms (Views: 1.7ms | ActiveRecord: 0.3ms)
825    (0.5ms)  rollback transaction
826    (1.0ms)  DELETE FROM "products";
827    (0.1ms)  DELETE FROM sqlite_sequence where name = 'products';
828    (1.1ms)  DELETE FROM "users";
829    (0.1ms)  DELETE FROM sqlite_sequence where name = 'users';

===== RSpec Error===
Failures:

  1) ProductsController Handling /GET /products (The index action for this controller) should list all products
     Failure/Error: Product.should_receive(:index).and_return(@products)
       (<Product(id: integer, name: string, description: string, price: decimal, inventory: integer, created_at: datetime, updated_at: datetime, product_image: string) (class)>).index(any args)
           expected: 1 time
           received: 0 times