require 'test_helper'

module RubyPsigate
  class ItemTest < Test::Unit::TestCase
    
    def setup
      @item = Item.new
    end
    
    %w( unique_id desc qty price ).each do |field|
      should "respond to #{field}" do
        assert @item.respond_to?(field.downcase.to_sym)
        setter = field.downcase + "="
        assert @item.respond_to?(setter.to_sym)
      end
    end
    
    should "raise error if qty is less than 0" do
      assert_raises(NumberLessThanZero) do
        @item.qty = -3
      end
    end
    
    should "not raise error if qty is 0" do
      assert_nothing_raised do
        @item.qty = 0 
      end
    end
    
    should "not raise error if qty above 0" do
      assert_nothing_raised do
        @item.qty = 1
      end
    end
    
    should "set a whole number for qty" do
      @item.qty = "1.33"
      assert_equal "1.33".to_i, @item.qty
    end
    
    should "respond to price getter/setter" do
      assert @item.respond_to?(:price)
      assert @item.respond_to?(:price=)
    end
    
    should "set the amount to 100.00" do
      @item.price = "100.00"
      assert_equal Money.new(100.00*100), @item.price
    end
    
    should "respond to options" do
      assert @item.respond_to?(:options)
    end
    
    should "add options via << method" do
      assert_equal 0, @item.options.count
      @item << ItemOption.new(:color => "pink")
      assert_equal [{ :color => "pink"}], @item.options
    end
    
    should "raise an error unless added option is a ItemOption class" do
      assert_raises(InvalidItemOption) do
        @item << { :color => "pink" }
      end
    end
    
    should "return a simple item hash" do
      @item.unique_id = "PSI-BOOK"
      @item.desc = "XML Interface Doc"
      @item.qty = 2
      @item.price = 10.00
      
      @expectation = {
        :ItemID => "PSI-BOOK",
        :ItemDescription => "XML Interface Doc",
        :ItemQty => 2,
        :ItemPrice => 10.00
      }
      
      assert_equal @expectation, @item.to_hash
    end
    
    should "return a nested item hash (with options)" do
      @item.unique_id = "PSI-BOOK"
      @item.desc = "XML Interface Doc"
      @item.qty = 2
      @item.price = 10.00
      @item << ItemOption.new(:color => "pink")
      @item << ItemOption.new(:size => "Extra Large")
      
      @expectation = {
        :ItemID => "PSI-BOOK",
        :ItemDescription => "XML Interface Doc",
        :ItemQty => 2,
        :ItemPrice => 10.00,
        :Option => {
          :color => "pink",
          :size => "Extra Large"
        }
      }
      
      assert_equal @expectation, @item.to_hash
    end

  end
end