Basic Product class

product.rb

@@ -0,0 +1,19 @@
+class Product
+  def initialize(price: 0.00, id:, description: '')
+    @price = price
+    @id = id
+    @description = description
+  end
+
+  def price
+    @price
+  end
+
+  def id
+    @id
+  end
+
+  def description
+    @description
+  end
+end

test/product_test.rb

@@ -0,0 +1,18 @@
+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