public void WhenStartingValueBiggerThanZero_WhenGettingCollatzSequence_ThenWeGetCorrectCollatzSequence()
        {
            var sequence = CalculateCollatzSequence.GetCollatzSequence(13);

            Assert.AreEqual(10, sequence.Count);
            Assert.AreEqual(13, sequence[0]);
            Assert.AreEqual(40, sequence[1]);
            Assert.AreEqual(20, sequence[2]);
            Assert.AreEqual(10, sequence[3]);
            Assert.AreEqual(5, sequence[4]);
            Assert.AreEqual(16, sequence[5]);
            Assert.AreEqual(8, sequence[6]);
            Assert.AreEqual(4, sequence[7]);
            Assert.AreEqual(2, sequence[8]);
            Assert.AreEqual(1, sequence[9]);
        }
 public void GivenStartingValueSmallerOrEqualToZero_WhenGettingCollatzSequence_ThenThrowError()
 {
     CalculateCollatzSequence.GetCollatzSequence(0);
 }