public void InequalityWorks() { var cellRefA1 = new CellRef("A1"); var cellRefA2FromInts = new CellRef(1, 2); (cellRefA1 != cellRefA2FromInts).Should().BeTrue(); (cellRefA1 == cellRefA2FromInts).Should().BeFalse(); cellRefA1.Equals(cellRefA2FromInts).Should().BeFalse(); }