stevenbeales/mental-test

# frozen_string_literal: true

RSpec.describe Arm, type: :model do
  subject { TestFactory.test_arm }
  let!(:schedule) { TestFactory.test_schedule }
  let!(:study) { TestFactory.test_study }
  let!(:study_event) { TestFactory.test_study_event }

  include_examples 'valid object creation', Arm

  describe '#respond_to?' do
    include_context 'shared attributes'
    include_examples 'respond', %i[schedule study study_events number name]
    include_examples 'common attributes'
  end

  include_examples 'required attribute', 'number', 2
  include_examples 'default attribute', 'number', 1

  describe '#name' do
    include_context 'restore attributes'

    context 'when missing' do
      it 'set to "arm1"' do
        subject.name = nil
        subject.valid?
        expect(subject.name).to eq('arm ' + subject.number.to_s)
      end
    end
  end

  describe '#schedule' do
    include_context 'restore attributes'

    it 'is required' do
      subject.schedule = nil
      subject.valid?
      expect(subject.errors[:schedule].size).to eq(1)
    end

    context 'when missing' do
      it 'study is nil' do
        subject.schedule = nil
        expect(subject.study).to be_nil
      end
    end

    context '#arms' do
      it 'includes arm' do
        subject.schedule.arms.concat(subject)
        expect(subject.schedule.arms).to include(subject)
      end

      it do
        subject.schedule.arms.concat(subject)
        expect(subject.schedule.arms).not_to be_empty
      end
    end
  end

  context '#study' do
    it 'equals schedule study' do
      expect(subject.study.id).to eq(subject.schedule.study.id)
    end
  end

  describe '#number' do
    include_context 'restore attributes'
    include_examples 'number specs', 'number'
  end

  describe '#study_events' do
    it { expect(subject.study_events.count).to eq(1) }
  end

  include_examples 'invalid create', 'no name or schedule'

  describe '.create!' do
    context 'blank name' do
      it do
        expect do
          Arm.create! name: '', schedule: schedule
        end.to raise_error ActiveRecord::RecordInvalid
      end
    end

    context '2+ character name and title' do
      it do
        expect do
          Arm.find_or_create_by! name: 'as', schedule: schedule, number: 2
        end.to_not raise_error
      end
    end

    context 'unique name' do
      it do
        another_object = described_class.create! schedule: schedule, number: 3
        begin
          expect { described_class.create! schedule: schedule, number: 3 }.to \
            raise_error ActiveRecord::RecordInvalid
        ensure
          another_object.destroy!
        end
      end
    end
  end

  describe '#to_s' do
    it 'prints study schedule name number' do
      expect(subject.to_s).to eq "#{subject.study} #{subject.schedule} #{subject.name} #{subject.number}"
    end
  end

  describe '#destroy!' do
    it 'also removes study_events' do
      another_object = Arm.find_or_create_by!(name: TestConstants::TEST_ARM2, schedule: schedule, number: 2)
      begin
        events = another_object.study_events
      ensure
        another_object.destroy!
        expect(events.size).to eq(0)
      end
    end
  end
end