public void CalculateAge_GivenATargetDateSimilarToBirthDate_ShouldReturnZero(DateTime targetDate)
        {
            //Arrange
            var      ageResult = new AgeCalculator();
            DateTime birthDate = new DateTime(targetDate.Year, 03, 05);

            //Act
            var actual = ageResult.CalculatorAge(birthDate, targetDate);

            //Assert
            Assert.AreEqual(0, actual);
        }
        public void CalculateAge_GivenABirthDateOfDifferentYearAndDiffirentMonthAsTargetDate_ShouldReturnZero()
        {
            //Arrange
            var      ageResult  = new AgeCalculator();
            DateTime birthDate  = new DateTime(2018, 03, 05);
            DateTime targetDate = new DateTime(2019, 01, 05);

            //Act
            var actual = ageResult.CalculatorAge(birthDate, targetDate);

            //Assert
            Assert.AreEqual(0, actual);
        }
        public void CalculateAge_GivenABirthDateGreaterThanTargetDate_ShouldReturnZero()
        {
            //Arrange
            var      ageResult  = new AgeCalculator();
            DateTime birthDate  = new DateTime(2018, 03, 05);
            DateTime targetDate = new DateTime(2015, 03, 05);

            //Act
            var actual = ageResult.CalculatorAge(birthDate, targetDate);

            //Assert
            Assert.AreEqual(0, actual);
        }