public void ShouldMultiplyTimeSpanByFactor()
        {
            //Arrange
            ProductOfTimeIntervals subject = new ProductOfTimeIntervals(new Milliseconds(101), new NumberOf(3));

            //Act
            TimeSpan actual = subject;

            //Assert
            actual.Should().Be(TimeSpan.FromMilliseconds(303));
        }
        public void ShouldBeZeroGivenFactorZero()
        {
            //Arrange
            ProductOfTimeIntervals subject = new ProductOfTimeIntervals(new Milliseconds(100), new NumberOf(0));

            //Act
            TimeSpan actual = subject;

            //Assert
            actual.Should().Be(TimeSpan.Zero);
        }