public void should_(int age, Gender gender, Risk risk)
        {
            var healthData = new HealthData {
                Age    = age,
                Gender = gender
            };

            var result = RiskProfile.Calculate(healthData);

            result.Should().Be(risk);
        }
 private static int Threshold(HealthData healthData) =>
 healthData.Gender == Gender.Male ? 60 : 62;
 internal static Risk Calculate(HealthData healthData) =>
 healthData.Age > Threshold(healthData) ? Risk.High : Risk.Low;