cart_test.exs

defmodule MangoWeb.Acceptance.CartTest do
  use Mango.DataCase
  use Hound.Helpers

  hound_session()

  setup do
    alias Mango.Repo
    alias Mango.Catalog.Product

    Repo.insert %Product{ name: "Carrot", pack_size: "1 kg", price: 55, sku: "A123", is_seasonal: true }
    Repo.insert %Product{ name: "Apple", pack_size: "1 kg", price: 75, sku: "B232", is_seasonal: true }
    :ok
  end

  test "presence of cart form for each product" do
    navigate_to("/")

    products = find_all_elements(:css, ".product")

    assert Enum.count(products) != 0
    products
    |> Enum.each(fn(product) ->
      button = find_within_element(product, :tag, "button")
      assert visible_text(button) == "Add to cart"
    end)
  end
  
  test "add to cart" do
    navigate_to("/")

    [product | _rest] = find_all_elements(:css, ".product")

    product_name = find_within_element(product, :name, "cart[product_name]")
                   |> attribute_value("value")
    pack_size = find_within_element(product, :name, "cart[pack_size]")
                |> attribute_value("value")

    find_within_element(product, :name, "cart[quantity]")
    |> fill_field(2)

    find_within_element(product, :tag, "button")
    |> click

    message = find_element(:css, ".alert")
              |> visible_text()
    assert message == "Product added to cart - #{product_name}(#{pack_size}) x 2 qty"
  end
end