C# Test for Except And Intersect

I needed to compare two Lists in C# in order to form a new List by comparing the Lists, adding the common elements to the new List, and then adding new elements to the new List. I thought it good to share and perhaps garner some feedback. Here is the NUnit test:

	[Test]
	public void TestExceptAndIntersect()
	{
	//check if equal with differing sequence
	var list1 = new List<int>(new int[] { 1, 2, 3, 4, 5, 6 });
	var list2 = new List<int>(new int[] { 6, 5, 4, 3, 2, 1 });
	var result = list1.Except(list2).ToList();
	Assert.AreEqual(new int[] { }, result);
	var oldList = new List<int>(new int[] { 1, 2, 3, 4, 5, 6 });
	var newList = new List<int>(new int[] { 3, 5, 6, 7, 8 });
	//get the intersect between the 2 lists
	var commonItems = newList.Intersect(oldList).ToList();
	Assert.AreEqual(new int[] { 3, 5, 6 }, commonItems);
	//what is in the first list that is not in the second list
	var toBeRemoved = oldList.Except(newList).ToList();
	var toBeAdded = newList.Except(oldList).ToList();
	Assert.IsFalse(toBeRemoved.Count == 0);
	Assert.IsFalse(toBeAdded.Count == 0);
	Assert.AreEqual(new int[] { 1, 2, 4 }, toBeRemoved);
	Assert.AreEqual(new int[] { 7, 8 }, toBeAdded);
	var updatedList = commonItems.Concat(toBeAdded).ToList();
	Assert.AreEqual(new int[] { 3, 5, 6, 7, 8 }, updatedList);
	}

view raw gistfile1.txt hosted with ❤ by GitHub