public void ShiftDownInvalidTest()
{
var index = new FastIndex(1, 'A');
var board = new BitsBoard();
board[index] = true;
var shifted = board.Shift(HexNeighborDirection.Down);
AssertNoIndicesSet(shifted);
}
public void ShiftDownAcrossBoundaryTest()
{
var index = FastIndex.FromByte(64);
var expected = index[HexNeighborDirection.Down];
var board = new BitsBoard();
board[index] = true;
var shifted = board.Shift(HexNeighborDirection.Down);
AssertOnlyIndexSet(shifted, expected);
}
public void ShiftDownTest()
{
var index = new FastIndex(5, 'E');
var board = new BitsBoard();
board[index] = true;
AssertOnlyIndexSet(board, index);
var shifted = board.Shift(HexNeighborDirection.Down);
AssertOnlyIndexSet(board, index);
AssertOnlyIndexSet(shifted, new FastIndex(4, 'E'));
}
public void ShiftComprehensivetest([ValueSource(typeof(PrecomputedMoveData), nameof(PrecomputedMoveData.AllDirections))] HexNeighborDirection direction)
{
for (byte b = 0; b < 85; b++)
{
FastIndex index = FastIndex.FromByte(b);
var original = new BitsBoard();
original[index] = true;
var expected = index[direction];
var shifted = original.Shift(direction);
if (expected.IsInBounds)
{
AssertOnlyIndexSet(shifted, expected);
}
else
{
AssertNoIndicesSet(shifted);
}
}
}