Pt-E-2
Activity Description
Add unit tests which add unique products and duplicate products. Note that you will need to modify the fixture to refer to products and carts by name, for example product: ruby.
Author’s Solutions
blah
Readers’ Solutions
Long says
My attempt:
In test/unit/cart_test.rb:
def new_cart_with_one_product(product_name)
cart = Cart.create
cart.add_product(products(product_name).id)
cart
end
test 'cart should create a new line item when adding a new product' do
cart = new_cart_with_one_product(:one)
assert_equal 1, cart.line_items.count
# Add a new product
cart.add_product(products(:ruby).id)
assert_equal 2, cart.line_items.count
end
test 'cart should update an existing line item when adding an existing product' do
cart = new_cart_with_one_product(:one)
# Re-add the same product
cart.add_product(products(:one).id)
assert_equal 1, cart.line_items.count
end
h4. Arun says
I am doubtful whether the question was about creating a new and duplicate line items or products.
I thought the answer is along the lines of
test "unique_product_should_be_saved"
product = Product.new(:title => "unique-title",
:description => "a unique product",
:image_url => "unique.png",
:price => 22)
assert product.save
end
test "non_unique_product_should_error_out"
product = Product.new(:title => "unique-title",
:description => "a unique product",
:image_url => "unique.png",
:price => 22)
assert !product.save
assert_equal "has not been saved since it is a duplicate ", product.errors[:title].join('; ')
end