# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'Using inheritance to share elements and attributes', type: :feature do
  class Genetics
    include HappyMapper
    content :dna, String
  end

  class Parent
    include HappyMapper
    attribute :love, Integer
    element :genetics, Genetics
  end

  class Child < Parent
    include HappyMapper
    attribute :naivety, String
    has_many :immunities, String
  end

  class Overwrite < Parent
    include HappyMapper

    attribute :love, String
    element :genetics, Integer
  end

  describe 'Overwrite' do
    let(:overwrite) do
      xml =
        '<overwrite love="love" naivety="trusting">' \
        '<genetics>1001</genetics><immunities>Chicken Pox</immunities>' \
        '</overwrite>'
      Overwrite.parse(xml, single: true)
    end

    it 'overrides the parent elements and attributes' do
      aggregate_failures do
        expect(Overwrite.attributes.count).to eq Parent.attributes.count
        expect(Overwrite.elements.count).to eq Parent.elements.count
      end
    end

    context 'when parsing xml' do
      it 'parses the new overwritten attribut' do
        expect(overwrite.love).to be == 'love'
      end

      it 'parses the new overwritten element' do
        expect(overwrite.genetics).to be == 1001
      end
    end

    context 'when saving to xml' do
      let(:xml) do
        overwrite = Overwrite.new
        overwrite.genetics = 1
        overwrite.love = 'love'
        Nokogiri::XML(overwrite.to_xml).root
      end

      it 'has only 1 genetics element' do
        expect(xml.xpath('//genetics').count).to be == 1
      end

      it 'has only 1 love attribute' do
        expect(xml.xpath('@love').text).to be == 'love'
      end
    end
  end

  describe 'Child', 'a subclass of the Parent' do
    let(:child) do
      xml =
        '<child love="99" naivety="trusting">' \
        '<genetics>ABBA</genetics><immunities>Chicken Pox</immunities>' \
        '</child>'
      Child.parse(xml)
    end

    context 'when parsing xml' do
      it 'is possible to deserialize XML into a Child class instance' do
        aggregate_failures do
          expect(child.love).to eq 99
          expect(child.genetics.dna).to eq 'ABBA'
          expect(child.naivety).to eq 'trusting'
          expect(child.immunities.size).to eq(1)
        end
      end
    end

    context 'when saving to xml' do
      let(:xml) do
        child = Child.new
        child.love = 100
        child.naivety = 'Bright Eyed'
        child.immunities = ['Small Pox', 'Chicken Pox', 'Mumps']
        genetics = Genetics.new
        genetics.dna = 'GATTACA'
        child.genetics = genetics
        Nokogiri::XML(child.to_xml).root
      end

      it 'saves both the Child and Parent attributes' do
        aggregate_failures do
          expect(xml.xpath('@naivety').text).to eq 'Bright Eyed'
          expect(xml.xpath('@love').text).to eq '100'
        end
      end

      it 'saves both the Child and Parent elements' do
        aggregate_failures do
          expect(xml.xpath('genetics').text).to eq 'GATTACA'
          expect(xml.xpath('immunities').size).to eq(3)
        end
      end
    end
  end
end