why is the unit test not passed?

Question

I have such a test:

namespace UnitTestProject1
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestMethod1()
        {
            List<int> gameboard = new List<int> {
                -1,0,-1,0,-1,0,-1,0,
                0,-1,0,-1,0,-1,0,-1,
                -1,0,-1,0,-1,0,-1,0,
                0,0,0,0,0,0,0,0,
                0,0,0,0,0,0,0,0,
                0,1,0,1,0,1,0,1,
                1,0,1,0,1,0,1,0,
                0,1,0,1,0,1,0,1

            };
            int x = 5;
            int y = 1;
            List<List<int>> expected = new List<List<int>> {
                new List<int>(){
                -1,0,-1,0,-1,0,-1,0,
                0,-1,0,-1,0,-1,0,-1,
                -1,0,-1,0,-1,0,-1,0,
                0,0,0,0,0,0,0,0,
                0,0,1,0,0,0,0,0,
                0,0,0,1,0,1,0,1,
                1,0,1,0,1,0,1,0,
                0,1,0,1,0,1,0,1
                }
            };
            var calc = new Checkers.PieceMovment();
            List<List<int>> actual = calc.MoveRightForward(gameboard, x, y);
            Assert.AreEqual(expected, actual);
        }
    }
}

In expected, I enter what I previously received in the console. Because I know it's the right value. And i get this message: failed Assert.AreEqual. Expected: <System.Collections.Generic.List1[System.Collections.Generic.List1[System.Int32]]>. Actually: <System.Collections.Generic.List1[System.Collections.Generic.List1[System.Int32]]>.

And I don't understand what the problem is . . .

Answer 1

When you are using collection, use CollectionAssert

Assert.AreEqual(List<int>, List<int>) checks the reference of list 1 and list 2, so it returns false in your case where lists have different references.

CollectionAssert enumerates each item and asserts if they are equal or not.

TL/DR: Use the following code.

 CollectionAssert.AreEqual(expected, actual);