public void AddMultipleCounters()
 {
     var board = new Connect4Board(5, 2);
     board.AddCounter(1, 1);
     board.AddCounter(2, 1);
     board.AddCounter(3, 2);
     Assert.AreEqual(1, board.Columns[0][0].PlayerIndex);
     Assert.AreEqual(2, board.Columns[0][1].PlayerIndex);
     Assert.AreEqual(3, board.Columns[1][0].PlayerIndex);
 }
 public void AddCounterAddsToCorrectRowAndColumnPopulatedBoard()
 {
     var board = new Connect4Board(5, 2);
     board.Columns[0][0].PlayerIndex = 1;
     board.Columns[0][1].PlayerIndex = 2;
     board.AddCounter(1, 1);
     Assert.AreEqual(1, board.Columns[0][2].PlayerIndex);
 }