Unit Test Ruby on Rails app with RSpec

Unit Test for Model

RSpec.describe Event, type: :model do
  describe "validations" do
    let(:event) { build(:event) }
    
    it { should validate_presence_of(:title) }
    it { should validate_presence_of(:category) }
    it { should validate_presence_of(:location) }
    it { should validate_presence_of(:start_date) }
    it { should validate_presence_of(:end_date) }
    it { should validate_presence_of(:status) }

    describe '#date_range validation' do
      # Context for Happy Path
      context 'start_date earlier than end_date' do
        it "should be valid" do
          event.start_date = Date.today
          event.end_date = 1.day.from_now
          expect(event.save).to eq(true)
        end
      end

      # context for Unhappy Path
      context 'start_date is later than end_date' do
        it "should be invalid" do
          event.start_date = Date.today
          event.end_date = 5.days.ago

          expect(event.save).to eq(false)
        end
      end
    end
  end
end