require 'test_helper'

class InventoryLevelTest < Test::Unit::TestCase
  def setup
    super
    @inventory_level_response = ActiveSupport::JSON.decode load_fixture('inventory_level')
    @inventory_level = ShopifyAPI::InventoryLevel.new(@inventory_level_response['inventory_level'])
  end

  test 'Retrieve inventory levels for the specified inventory_items and locations' do
    params = { inventory_item_ids: [808950810, 39072856], location_ids: [905684977, 487838322] }
    fake "inventory_levels.json?#{params.to_param}", extension: false, method: :get,
          status: 200, body: load_fixture('inventory_levels')
    inventory_levels = ShopifyAPI::InventoryLevel.find(:all, params: params)

    assert inventory_levels.all? { |item|
      params[:location_ids].include?(item.location_id) &&
      params[:inventory_item_ids].include?(item.inventory_item_id)
    }, message: 'Response contained inventory_items or locations not requested.'
  end

  test 'Adjust an inventory level by 5' do
    adjustment = 5
    updated_available = @inventory_level.available + adjustment
    @inventory_level_response[:available] = updated_available

    fake 'inventory_levels/adjust', method: :post, body: ActiveSupport::JSON.encode(@inventory_level_response)
    @inventory_level.adjust(adjustment)
    assert_equal updated_available, @inventory_level.available
  end

  test 'Connect an inventory_item to a location' do
    params = { inventory_item_id: 808950810, location_id: 99999999 }
    response = params.clone
    response[:available] = 0

    fake 'inventory_levels/connect', method: :post, body: ActiveSupport::JSON.encode(response)
    inventory_level = ShopifyAPI::InventoryLevel.new(params)
    inventory_level.connect
    assert_equal 0, inventory_level.available, message: 'expected newly connected location to have 0 inventory'
  end

  test 'Destroy an inventory_level' do
    params = { inventory_item_id: @inventory_level.inventory_item_id, location_id: @inventory_level.location_id }
    fake "inventory_levels.json?#{params.to_param}", extension: false, method: :delete, status: 204, body: nil
    assert_nil @inventory_level.destroy
  end

  test 'Set the available inventory for an inventory_level' do
    available = 13
    response = @inventory_level_response.clone
    response['inventory_level']['available'] = available

    fake 'inventory_levels/set', method: :post, body: ActiveSupport::JSON.encode(response)
    @inventory_level.set(available)

    assert_equal available, @inventory_level.available
  end
end