Testing with Darryl

item.rb

class Item < ActiveRecord::Base
  has_many :order_items
  has_many :orders, through: :order_items

  validates :name, presence: true, uniqueness: true
  validates :description, presence: true, uniqueness: true
end

item_test.rb

require 'test_helper'

class ItemTest < ActiveSupport::TestCase
  # test "the truth" do
  #   assert true
  # end

  test "it creates an item" do
    result = Item.create
    assert result
  end

  test "it an item has a name" do
    result = Item.create(name: "hat")
    assert_equal "hat", result.name
  end

  test "it an item has a description" do
    result = Item.create(description: "tight")
    assert_equal "tight", result.description
  end

  test "it doesn't create a valid item without a name" do
    result = Item.create(description: "blue")
    refute result.valid?
  end

  test "it doesn't create a valid item without a description" do
    result = Item.create(name: "hammer")
    refute result.save
  end

  test "it creates a valid item when given the correct attributes" do
    result = Item.create(name: "pick", description: "sharp")
    assert_equal "pick", result.name
    assert_equal "sharp", result.description
    assert result.valid?
  end

  test "it doesn't create a valid item when the name is repeated" do
    Item.create(name: "pick", description: "sharp")
    result = Item.create(name: "pick", description: "soft")
    refute result.valid?
  end

  test "it doesn't create a valid item when the description is repeated" do
    Item.create(name: "scissors", description: "sharp")
    result = Item.create(name: "pick", description: "sharp")
    refute result.valid?
  end

  test "it updates an item" do
    item = Item.create(name: "puck", description: "round")
    item.update_attributes(name: "ball", description: "red")
    assert_equal "ball", item.name
    assert_equal "red", item.description
    assert item.valid?
  end
end

# it creates an item
# it doesn't create an item when a validation prevents
# it deletes an item
# it updates an item