Hi I'm trying to be good and practice full BDD on my current project,
and don't want to abandon it as I have previously (expediency triumphed
unfortunately). So expect me to be making frequent 'noob' style posts...
My current issue is with testing assignation across a has_many
relationship. I'm aware I shouldn't be testing the functionality of
Rails, but this is behaviour of my code.
cart_spec.rb:
describe Cart do
before(:each) do
@product = mock "Trousers"
@product.stub!(:class).and_return("Product")
@product.stub!(:name).and_return("Brown Trousers")
@product.stub!(:price).and_return(23.99)
@cart = Cart.new
end
it "should have 1 item after adding a Product" do
@cart.add_product(@product)
@cart.items.should have(1).item
end
it "should have 1 item but with quantity 2 after adding the same
product twice" do
@cart.add_product(@product)
@cart.add_product(@product)
@cart.items.should have(1).item
end
end
cart.rb:
class Cart < ActiveRecord::Base
has_many :items, :class_name => "CartItem", :dependent => :destroy
def add_product(product)
current = self.items.find_by_name(product.name)
if current
current.increment_quantity
else
self.items << CartItem.new_from_product(product)
end
end
end
fails with:
'Cart should have 1 item but with quantity 2 after adding the same
product twice' FAILED expected 1 item, got 2
*****
Can anyone explain to me what I'm missing?
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