require "minitest/autorun" require "product.rb" class ProductTest < Minitest::Test def test_that_missing_id_raises_an_error assert_raises ArgumentError do Product.new() end end def test_that_initializing_a_product_sets_instance_variables product = Product.new(id: 'PICO2', price: 4.00) assert_equal 'PICO2', product.id assert_equal 4.00, product.price end end