func testThatItShouldReturnTheCorrectStateWhenCellIsDead() throws {
        XCTAssertTrue(GOLBoardState.dead.nextState(with: 0) == .dead)
        XCTAssertTrue(GOLBoardState.dead.nextState(with: 1) == .dead)
        XCTAssertTrue(GOLBoardState.dead.nextState(with: 2) == .dead)
        XCTAssertTrue(GOLBoardState.dead.nextState(with: 3) == .alive)