carriage_test.rb

require "test_helper"

class CarriageTest < Minitest::Test
  def test_that_it_has_a_version_number
    refute_nil ::Carriage::VERSION
  end

  TAG = "acart0c1-20"
  KEY_ID = "justkeyid"

  def test_build_2
    expected = append_keys(prepend_url("ASIN.1=B00WR23X5I&Quantity.1=1&ASIN.2=B018YJYPTA&Quantity.2=1"))
    items = [{asin: "B00WR23X5I", quantity: 1}, {asin: "B018YJYPTA", quantity: 1}]

    assert_equal expected, Carriage.build(items, tag: TAG, key_id: KEY_ID)
  end

  def test_without_quantity
    expected = append_keys(prepend_url("ASIN.1=B00WR23X5I&Quantity.1=1&ASIN.2=B018YJYPTA&Quantity.2=1"))
    items = [{asin: "B00WR23X5I"}, {asin: "B018YJYPTA"}]

    assert_equal expected, Carriage.build(items, tag: TAG, key_id: KEY_ID)
  end

  def test_without_tag
    assert_equal prepend_url("ASIN.1=B00WR23X5I&Quantity.1=1"), Carriage.build([{asin: "B00WR23X5I", quantity: 1}])
  end

  def test_build_1
    expected = append_keys(prepend_url("ASIN.1=B00WR23X5I&Quantity.1=1"))
    items = [{asin: "B00WR23X5I", quantity: 1}]
    assert_equal expected, Carriage.build(items, tag: TAG, key_id: KEY_ID)
  end

  def test_custom_quantity
    expected = append_keys(prepend_url("ASIN.1=B00WR23X5I&Quantity.1=2&OfferListingId.2=B018YJYPTA&Quantity.2=2"))
    items = [{asin: "B00WR23X5I", quantity: 2}, {id: "B018YJYPTA", quantity: 2}]

    assert_equal expected, Carriage.build(items, tag: TAG, key_id: KEY_ID)
  end

  def test_missing_key_id
    expected = prepend_url("ASIN.1=B00WR23X5I&Quantity.1=1&AssociateTag=#{TAG}")
    items = [{asin: "B00WR23X5I", quantity: 1}]

    assert_equal expected, Carriage.build(items, tag: TAG, key_id: nil)
    assert_equal expected, Carriage.build(items, tag: TAG, key_id: "")
    assert_equal expected, Carriage.build(items, tag: TAG)
  end

  def test_offer_listing_id
    expected = append_keys(prepend_url("OfferListingId.1=B00WR23X5I&Quantity.1=1&OfferListingId.2=B018YJYPTA&Quantity.2=1"))
    items = [{id: "B00WR23X5I", quantity: 1}, {Id: "B018YJYPTA", quantity: 1}]

    assert_equal expected, Carriage.build(items, tag: TAG, key_id: KEY_ID)
  end

  def test_zero
    refute_nil Carriage.build({}, tag: TAG, key_id: KEY_ID)
    refute_nil Carriage.build(nil, tag: TAG, key_id: KEY_ID)
  end

  def test_available_locales
    items = [{asin: "B00WR23X5I", quantity: 1}]

    assert Carriage.build(items, tag: TAG, locale: :uk).start_with?("https://www.amazon.co.uk")
    assert Carriage.build(items, tag: TAG, locale: :in).start_with?("https://www.amazon.in")
  end

  def test_normalize_locales
    items = [{asin: "B00WR23X5I", quantity: 1}]

    assert Carriage.build(items, tag: TAG, locale: 'UK').start_with?("https://www.amazon.co.uk")
    assert Carriage.build(items, tag: TAG, locale: :IN).start_with?("https://www.amazon.in")

  end

  def test_verify_locale
    assert_raises(Carriage::Locale::NotFound) do
      Carriage.call(:oo, {"ASIN.1": "B00WR23X5I", "Quantity.1": 1})
    end
  end

  private

  def prepend_url(str)
    "https://www.amazon.com/gp/aws/cart/add.html?#{str}"
  end

  def append_keys(str)
    "#{str}&AssociateTag=#{TAG}&AWSAccessKeyId=#{KEY_ID}"
  end
end