require 'spec_helper'

# Helper model for testing purposes
class HelpersTestModel
  include HashSerializer::Helpers

  def initialize(hash = {})
    @hash = hash
  end

  def billing=(hash)
    @hash = hash
  end

  def billing
    @hash
  end

  def billing_will_change!
  end
end

describe HashSerializer::Helpers do
  let(:hash) { { name: 'John C. Bland II', zipcode: 78_377 } }

  subject { HelpersTestModel.new }
  let(:valid_keys) { %w(name zipcode) }
  let(:invalid_keys) { %w(invalid keys) }

  context 'validate_hash_serializer_keys' do
    it 'should return invalid keys' do
      hash['invalid'] = true
      hash['keys'] = false

      subject.billing = hash
      expect(subject.validate_hash_serializer_keys(:billing, valid_keys)).to eq(invalid_keys)
    end

    it 'should return nil if no invalid keys exist' do
      expect(subject.validate_hash_serializer_keys(:billing, valid_keys)).to be_nil
    end
  end

  context 'hash_accessor_with_prefix' do
    let(:prefix) { 'billing_stuff' }

    context 'not called' do
      it 'setters do not exist' do
        expect(subject.respond_to?(:billing_stuff_name=)).to be_falsey
        expect(subject.respond_to?(:billing_stuff_zipcode=)).to be_falsey
      end

      it 'getters do not exist' do
        expect(subject.respond_to?(:billing_stuff_name)).to be_falsey
        expect(subject.respond_to?(:billing_stuff_zipcode)).to be_falsey
      end

      it 'changed? methods exist' do
        expect(subject.respond_to?(:billing_stuff_name_changed?)).to be_falsey
        expect(subject.respond_to?(:billing_stuff_zipcode_changed?)).to be_falsey
      end
    end

    context 'called' do
      before(:each) { subject.hash_accessor_with_prefix(:billing, prefix, valid_keys) }

      it 'setters exist' do
        expect(subject.respond_to?(:billing_stuff_name=)).to be_truthy
        expect(subject.respond_to?(:billing_stuff_zipcode=)).to be_truthy
      end

      it 'getters exist' do
        expect(subject.respond_to?(:billing_stuff_name)).to be_truthy
        expect(subject.respond_to?(:billing_stuff_zipcode)).to be_truthy
      end

      it 'changed? methods exist' do
        expect(subject.respond_to?(:billing_stuff_name_changed?)).to be_truthy
        expect(subject.respond_to?(:billing_stuff_zipcode_changed?)).to be_truthy
      end

      it 'methods works' do
        new_name = 'John Bland III'
        new_zipcode = 85_008

        expect(subject).to receive(:billing_will_change!).twice

        subject.billing_stuff_name = new_name
        subject.billing_stuff_zipcode = new_zipcode

        expect(subject.billing_stuff_name).to eq(new_name)
        expect(subject.billing_stuff_name_changed?).to be_truthy
        expect(subject.billing_stuff_zipcode).to eq(new_zipcode)
        expect(subject.billing_stuff_zipcode_changed?).to be_truthy
      end
    end
  end
end