public void GetCol_Test()
{
var expected = new CellState[] {
_instance.CellsMatrix[0, 1],
_instance.CellsMatrix[1, 1],
_instance.CellsMatrix[2, 1],
_instance.CellsMatrix[3, 1],
};
var result = _instance.GetCol(1);
CollectionAssert.AreEquivalent(
expected,
result
);
}