public void DescendingSortType_Update_SequenceHasNumbers_ReturnsSequenceInReverseOrder()
{
var descendingSortType = new DescendingSortType();
decimal[] primarySequence = new decimal[] { 1, 2, 4, 3 };
decimal[] expectedSequence = new decimal[] { 3, 4, 2, 1 };
IEnumerable <decimal> updatedSequence = descendingSortType.Update(primarySequence);
CollectionAssert.AreEqual(expectedSequence, updatedSequence.ToArray());
}
public void DescendingSortType_Update_SequenceIsNull_ThrowsArgumentNullException()
{
var descendingSortType = new DescendingSortType();
Assert.ThrowsException <ArgumentNullException>(() => descendingSortType.Update(null));
}
