def test_move_valid_piece_move(self):
g = self.makeOne()
# Try to move white pawn 4 squares ahead
with pytest.raises(InvalidMove):
g.player_move(Square("a2"), Square("a6"))
# Try to move white pawn diagonally like a bishop
with pytest.raises(InvalidMove):
g.player_move(Square("a2"), Square("d4"))
def get_move(self) -> Tuple[Square, Square]:
move = input(f"[{self.game.turn}] >>> ")
if move == "exit":
raise KeyboardInterrupt
try:
assert len(move) == 4
return Square(move[:2]), Square(move[2:])
except (AssertionError, InvalidSquare):
print("Invalid move! Try again...")
return self.get_move()
def test_player_move_on_wrong_turn(self):
g = self.makeOne()
# Try to move black piece on white's turn
self.assertEqual(g.turn, "white")
with pytest.raises(InvalidMove):
g.player_move(Square("a7"), Square("a6"))
# Try to move white piece on black's turn
g.pass_turn()
self.assertEqual(g.turn, "black")
with pytest.raises(InvalidMove):
g.player_move(Square("a2"), Square("a3"))
def test_horizontal_and_vertical(self):
for square in all_squares():
self.assertEqual(len(self._makeOne(square)), 14)
# Check that it always stays inthe same row or in the same
# column
for m in self._makeOne(Square("a1")):
self.assertTrue(
(m.col == 0 and m.row in range(8)) or (m.col in range(8) and m.row == 0)
)
for m in self._makeOne(Square("a5")):
self.assertTrue(
(m.col == 0 and m.row in range(8)) or (m.col in range(8) and m.row == 4)
)
def all_moves(self) -> Set[Square]:
moves = set({})
# On starting position, pawn can jump 2 squares
pos = self.pos
if pos.row == self.start_row:
col = pos.col
row = pos.row + (self.direction * 2)
moves.update({Square(col=col, row=row)})
# Moving one square ahead + capturing moves
for side in (-1, 0, 1):
row = pos.row + self.direction
col = pos.col + side
if self._in_board(col, row):
moves.update({Square(col=col, row=row)})
return moves
def _all_moves(self) -> Set[Square]:
moves = set({})
for vector in self._deltas or []:
x, y = vector
factor = 1
while True:
col = self.pos.col
row = self.pos.row
if x != 0:
col += x * factor
if y != 0:
row += y * factor
factor = factor + 1
if not self._in_board(col, row):
break
else:
moves.update({Square(col=col, row=row)})
return moves
def all_moves(self) -> Set[Square]:
moves = set({})
for (x, y) in [
[1, 0],
[1, 1],
[1, -1],
[0, -1],
[0, 1],
[-1, 0],
[-1, 1],
[-1, -1],
]:
col = self.pos.col + x
row = self.pos.row + y
if not self._in_board(col, row):
continue
moves.update({Square(col=col, row=row)})
return moves
def print_board(self) -> None:
board = self.game.board
tmp = [" ", "a", "b", "c", "d", "e", "f", "g", "h"]
bpoints = self.game.advantage("black")
wpoints = self.game.advantage("white")
print(" ".join(tmp + [f"\tblack: {bpoints}"]))
for row in reversed(range(8)):
rowprint = []
rowprint.append(str(row + 1))
for col in range(8):
sq = Square(col=col, row=row)
piece: Optional[IPiece] = board.get_piece(sq)
if piece is None:
rowprint.append(" ")
else:
abbr = piece.abbr
if piece.color == "black":
abbr = abbr.lower()
rowprint.append(UNICODE_PIECES[abbr])
rowprint.append(str(row + 1))
print(" ".join(rowprint))
print(" ".join(tmp + [f"\twhite: {wpoints}"]))
def all_squares():
for i in range(8):
for j in range(8):
yield Square([i, j])
def test_all_moves_black(self):
self.assertEqual(
self._makeOne(Square("a8"), color="black"), {Square("a7"), Square("b7")}
)
self.assertEqual(
self._makeOne(Square("a7"), color="black"),
{Square("a6"), Square("a5"), Square("b6")},
)
self.assertEqual(
self._makeOne(Square("a6"), color="black"), {Square("a5"), Square("b5")}
)
self.assertEqual(
self._makeOne(Square("a4"), color="black"), {Square("a3"), Square("b3")}
)
self.assertEqual(self._makeOne(Square("a1"), color="black"), set({}))
self.assertEqual(
self._makeOne(Square("b7"), color="black"),
{Square("b5"), Square("b6"), Square("a6"), Square("c6")},
)
self.assertEqual(
self._makeOne(Square("b5"), color="black"),
{Square("b4"), Square("c4"), Square("a4")},
)
self.assertEqual(
self._makeOne(Square("b4"), color="black"),
{Square("b3"), Square("c3"), Square("a3")},
)
self.assertEqual(self._makeOne(Square("b1"), color="black"), set({}))
self.assertEqual(
self._makeOne(Square("h8"), color="black"), {Square("h7"), Square("g7")}
)
self.assertEqual(
self._makeOne(Square("h7"), color="black"),
{Square("h6"), Square("h5"), Square("g6")},
)
self.assertEqual(
self._makeOne(Square("h6"), color="black"), {Square("h5"), Square("g5")}
)
self.assertEqual(
self._makeOne(Square("h5"), color="black"), {Square("h4"), Square("g4")}
)
self.assertEqual(self._makeOne(Square("h1"), color="black"), set({}))
def test_all_moves(self):
for s in all_squares():
self.assertIn(len(self._makeOne(s)), [3, 5, 8])
self.assertEqual(
self._makeOne(Square("a1")), {Square("a2"), Square("b2"), Square("b1")}
)
self.assertEqual(
self._makeOne(Square("c4")),
{
Square("c3"),
Square("b3"),
Square("d3"),
Square("c5"),
Square("b5"),
Square("d5"),
Square("d4"),
Square("b4"),
},
)
def clear(self):
self._board: Dict[Square, Optional[Piece]] = {
Square(col=col, row=row): None for col in range(8) for row in range(8)
}
def test_all_moves_white(self):
self.assertEqual(self._makeOne(Square("a1")), {Square("a2"), Square("b2")})
self.assertEqual(
self._makeOne(Square("a2")), {Square("a3"), Square("a4"), Square("b3")}
)
self.assertEqual(self._makeOne(Square("a3")), {Square("a4"), Square("b4")})
self.assertEqual(self._makeOne(Square("a4")), {Square("a5"), Square("b5")})
self.assertEqual(self._makeOne(Square("a8")), set({}))
self.assertEqual(
self._makeOne(Square("b2")),
{Square("b3"), Square("b4"), Square("a3"), Square("c3")},
)
self.assertEqual(
self._makeOne(Square("b3")), {Square("b4"), Square("c4"), Square("a4")}
)
self.assertEqual(
self._makeOne(Square("b4")), {Square("b5"), Square("c5"), Square("a5")}
)
self.assertEqual(self._makeOne(Square("b8")), set({}))
self.assertEqual(self._makeOne(Square("h1")), {Square("h2"), Square("g2")})
self.assertEqual(
self._makeOne(Square("h2")), {Square("h3"), Square("h4"), Square("g3")}
)
self.assertEqual(self._makeOne(Square("h3")), {Square("h4"), Square("g4")})
self.assertEqual(self._makeOne(Square("h4")), {Square("h5"), Square("g5")})
self.assertEqual(self._makeOne(Square("h8")), set({}))
def test_all_moves(self):
for i in range(0, 8):
self.assertEqual(len(self._makeOne(Square((0, i)))), 21)
self.assertEqual(len(self._makeOne(Square((i, 0)))), 21)
self.assertEqual(len(self._makeOne(Square((7, i)))), 21)
self.assertEqual(len(self._makeOne(Square((i, 7)))), 21)
for i in range(1, 7):
self.assertEqual(len(self._makeOne(Square((1, i)))), 23)
self.assertEqual(len(self._makeOne(Square((i, 1)))), 23)
self.assertEqual(len(self._makeOne(Square((6, i)))), 23)
self.assertEqual(len(self._makeOne(Square((i, 6)))), 23)
for i in range(2, 6):
self.assertEqual(len(self._makeOne(Square((2, i)))), 25)
self.assertEqual(len(self._makeOne(Square((i, 2)))), 25)
self.assertEqual(len(self._makeOne(Square((5, i)))), 25)
self.assertEqual(len(self._makeOne(Square((i, 5)))), 25)
for i in range(3, 5):
self.assertEqual(len(self._makeOne(Square((3, i)))), 27)
self.assertEqual(len(self._makeOne(Square((i, 3)))), 27)
self.assertEqual(len(self._makeOne(Square((4, i)))), 27)
self.assertEqual(len(self._makeOne(Square((i, 4)))), 27)
def test_diagonals(self):
for square in all_squares():
square_color = square.color
moves = self._makeOne(square)
for m in moves:
assert m.color == square_color
# From all the board perimeter squares, bishop has only 7
# possible moves
for i in range(0, 8):
self.assertEqual(len(self._makeOne(Square((0, i)))), 7)
self.assertEqual(len(self._makeOne(Square((i, 0)))), 7)
self.assertEqual(len(self._makeOne(Square((7, i)))), 7)
self.assertEqual(len(self._makeOne(Square((i, 7)))), 7)
# Thes the inner perimeter squares
for i in range(1, 7):
self.assertEqual(len(self._makeOne(Square((1, i)))), 9)
self.assertEqual(len(self._makeOne(Square((i, 1)))), 9)
self.assertEqual(len(self._makeOne(Square((6, i)))), 9)
self.assertEqual(len(self._makeOne(Square((i, 6)))), 9)
for i in range(2, 6):
self.assertEqual(len(self._makeOne(Square((2, i)))), 11)
self.assertEqual(len(self._makeOne(Square((i, 2)))), 11)
self.assertEqual(len(self._makeOne(Square((5, i)))), 11)
self.assertEqual(len(self._makeOne(Square((i, 5)))), 11)
for i in range(3, 5):
self.assertEqual(len(self._makeOne(Square((3, i)))), 13)
self.assertEqual(len(self._makeOne(Square((i, 3)))), 13)
self.assertEqual(len(self._makeOne(Square((4, i)))), 13)
self.assertEqual(len(self._makeOne(Square((i, 4)))), 13)
def test_player_move_where_no_piece_is_found(self):
g = self.makeOne()
with pytest.raises(InvalidMove):
g.player_move(Square("a4"), Square("a5"))
def test_all_moves(self):
for sq in ("a1", "a8", "h1", "h8"):
self.assertEqual(len(self._makeOne(Square(sq))), 2)
for sq in ("a2", "a7", "h2", "h7"):
self.assertEqual(len(self._makeOne(Square(sq))), 3)
for sq in ("a3", "a6", "h3", "h6"):
self.assertEqual(len(self._makeOne(Square(sq))), 4)
for sq in ("a3", "a6", "h3", "h6"):
self.assertEqual(len(self._makeOne(Square(sq))), 4)
self.assertEqual(
self._makeOne(Square("d5")),
{
Square("c7"),
Square("e7"),
Square("c3"),
Square("e3"),
Square("f6"),
Square("f4"),
Square("b6"),
Square("b4"),
},
)
def get_square(pos: Coordinate) -> Square:
if isinstance(pos, str):
return Square(pos) # type: ignore
return pos
