Rails - Jun 2006 - Unit Testing failure

When I run the unit testing code in Unit Testing Models chapter of the Agile
Rails book, I get the
following error:

$ ruby test/unit/cart_test.rb 
Loaded suite test/unit/cart_test
Started
F.
Finished in 0.21806 seconds.

  1) Failure:
test_add_duplicate_product(CartTest) [test/unit/cart_test.rb:22]:
<4690> expected but was
<3579>.

2 tests, 3 assertions, 1 failures, 0 errors


require File.dirname(__FILE__) + ''/../test_helper'' 

class CartTest < Test::Unit::TestCase 
  fixtures :products 
  
  def setup 
    @cart = Cart.new 
    @rails = products(:rails_book) 
    @ruby = products(:ruby_book) 
  end 
  
  def test_add_unique_products 
    @cart.add_product @rails 
    @cart.add_product @ruby
    assert_equal 2, @cart.items.size 
    assert_equal @rails.price + @ruby.price, @cart.total_price 
  end 
  
  def test_add_duplicate_product 
    @cart.add_product @rails
    @cart.add_product @ruby
    assert_equal 2*@rails.price, @cart.total_price 
    assert_equal 1, @cart.items.size 
    assert_equal 2, @cart.items[0].quantity 
  end 
  
end

Could someone please tell me why I am getting this error? TIA


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On Jun 25, 2006, at 10:28 pm, Bala Paranj wrote:
> When I run the unit testing code in Unit Testing Models chapter of  
> the Agile Rails book, I get the
> following error:
>
> $ ruby test/unit/cart_test.rb
> Loaded suite test/unit/cart_test
> Started
> F.
> Finished in 0.21806 seconds.
>
>   1) Failure:
> test_add_duplicate_product(CartTest) [test/unit/cart_test.rb:22]:
> <4690> expected but was
> <3579>.
If I got the line numbers right, I''m guessing that''s because
"rails"
costs 2480 and "ruby" costs 1099:
>     @cart.add_product @rails
>     @cart.add_product @ruby
>     assert_equal 2*@rails.price, @cart.total_price
(Also the next 2 lines you wrote assume you added one book twice)

Ashley