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"""Tests for solve_all_boards_pbn and solve_all_boards_bin wrappers."""
import unittest
from dds3 import solve_all_boards_bin, solve_all_boards_pbn, solve_board, solve_board_pbn
from test_utils import assert_raises
# Reused across tests: a complete, valid 13-card deal in PBN notation.
_PBN = "N:QJ6.K652.J85.T98 873.J97.AT764.Q4 K5.T83.KQ9.A7652 AT942.AQ4.32.KJ3"
# Binary equivalent of the same deal for solve_all_boards_bin tests.
# remainCards[hand][suit] bitmasks for: N, E, S, W × ♠,♥,♦,♣
# Bit n is set for rank n (2→bit2=0x4, A→bit14=0x4000). Each suit sums to 0x7FFC.
_BINARY_DEAL = {
"trump": 4, # NT
"first": 0, # North
"remain_cards": [
[0x1840, 0x2064, 0x0920, 0x0700], # North ♠QJ6 ♥K652 ♦J85 ♣T98
[0x0188, 0x0A80, 0x44D0, 0x1010], # East ♠873 ♥J97 ♦AT764 ♣Q4
[0x2020, 0x0508, 0x3200, 0x40E4], # South ♠K5 ♥T83 ♦KQ9 ♣A7652
[0x4614, 0x5010, 0x000C, 0x2808], # West ♠AT942 ♥AQ4 ♦32 ♣KJ3
],
"current_trick_suit": (0, 0, 0),
"current_trick_rank": (0, 0, 0),
}
def _result_shape_ok(result: dict) -> bool:
"""Return True if a FutureTricks dict has the expected shape."""
return (
"nodes" in result
and "cards" in result
and "suit" in result
and "rank" in result
and "equals" in result
and "score" in result
and len(result["suit"]) == 13
)
class TestSolveAllBoardsPBN(unittest.TestCase):
"""Tests for solve_all_boards_pbn (PBN format batch input)."""
def test_single_board_returns_list_of_one(self) -> None:
boards = [{"remain_cards": _PBN, "trump": 4, "first": 0}]
results = solve_all_boards_pbn(boards)
self.assertIsInstance(results, list)
self.assertEqual(len(results), 1)
self.assertTrue(_result_shape_ok(results[0]))
def test_multiple_boards(self) -> None:
boards = [{"remain_cards": _PBN, "trump": 4, "first": 0}] * 3
results = solve_all_boards_pbn(boards)
self.assertEqual(len(results), 3)
for r in results:
self.assertTrue(_result_shape_ok(r))
def test_empty_list_returns_empty(self) -> None:
results = solve_all_boards_pbn([])
self.assertEqual(results, [])
def test_all_optional_keys_default(self) -> None:
"""Only remain_cards is required; all others have documented defaults."""
boards = [{"remain_cards": _PBN}]
results = solve_all_boards_pbn(boards)
self.assertEqual(len(results), 1)
self.assertTrue(_result_shape_ok(results[0]))
def test_result_matches_single_board_pbn(self) -> None:
"""Batch result for one board should agree with single-board result on card count."""
single = solve_board_pbn(_PBN, trump=4, first=0)
batch = solve_all_boards_pbn([{"remain_cards": _PBN, "trump": 4, "first": 0}])
# Only the first `cards` entries are meaningful; compare the count and top score.
self.assertEqual(single["cards"], batch[0]["cards"])
self.assertEqual(single["score"][0], batch[0]["score"][0])
def test_different_trump_suits_accepted(self) -> None:
for trump in range(5):
boards = [{"remain_cards": _PBN, "trump": trump, "first": 0}]
results = solve_all_boards_pbn(boards)
self.assertEqual(len(results), 1)
def test_different_first_seats_accepted(self) -> None:
for first in range(4):
boards = [{"remain_cards": _PBN, "trump": 4, "first": first}]
results = solve_all_boards_pbn(boards)
self.assertEqual(len(results), 1)
def test_invalid_trump_raises_value_error(self) -> None:
boards = [{"remain_cards": _PBN, "trump": 5}]
assert_raises(ValueError, solve_all_boards_pbn, boards, match="invalid value 5")
def test_invalid_first_raises_value_error(self) -> None:
boards = [{"remain_cards": _PBN, "first": 4}]
assert_raises(ValueError, solve_all_boards_pbn, boards, match="invalid value 4")
def test_invalid_trick_suit_raises_value_error(self) -> None:
boards = [{"remain_cards": _PBN, "current_trick_suit": (0, 0, 5)}]
assert_raises(ValueError, solve_all_boards_pbn, boards, match="invalid value 5")
def test_invalid_trick_rank_raises_value_error(self) -> None:
boards = [{"remain_cards": _PBN, "current_trick_rank": (2, 2, 15)}]
assert_raises(ValueError, solve_all_boards_pbn, boards, match="invalid value 15")
def test_too_many_boards_raises_value_error(self) -> None:
boards = [{"remain_cards": _PBN}] * 201
assert_raises(ValueError, solve_all_boards_pbn, boards, match="exceeds maximum")
def test_invalid_pbn_string_raises_error(self) -> None:
boards = [{"remain_cards": "not a pbn"}]
assert_raises((ValueError, RuntimeError), solve_all_boards_pbn, boards)
def test_per_board_target_and_solutions(self) -> None:
boards = [{"remain_cards": _PBN, "trump": 4, "first": 0, "target": 9, "solutions": 1, "mode": 0}]
results = solve_all_boards_pbn(boards)
self.assertTrue(_result_shape_ok(results[0]))
def test_max_threads_accepted_and_matches_default(self) -> None:
"""Passing an explicit max_threads must be accepted and give the same results as the default."""
boards = [{"remain_cards": _PBN, "trump": 4, "first": 0}] * 3
default = solve_all_boards_pbn(boards)
for max_threads in (1, 2):
capped = solve_all_boards_pbn(boards, max_threads=max_threads)
self.assertEqual(len(capped), len(default))
for capped_r, default_r in zip(capped, default):
# Only the first `cards` entries of a result are meaningful.
cards = capped_r["cards"]
self.assertEqual(cards, default_r["cards"])
for key in ("suit", "rank", "equals", "score"):
self.assertEqual(capped_r[key][:cards], default_r[key][:cards])
class TestSolveAllBoardsBin(unittest.TestCase):
"""Tests for solve_all_boards_bin (binary format batch input)."""
def test_single_board_returns_list_of_one(self) -> None:
results = solve_all_boards_bin([_BINARY_DEAL])
self.assertIsInstance(results, list)
self.assertEqual(len(results), 1)
self.assertTrue(_result_shape_ok(results[0]))
def test_multiple_boards(self) -> None:
results = solve_all_boards_bin([_BINARY_DEAL] * 3)
self.assertEqual(len(results), 3)
for r in results:
self.assertTrue(_result_shape_ok(r))
def test_empty_list_returns_empty(self) -> None:
results = solve_all_boards_bin([])
self.assertEqual(results, [])
def test_result_matches_single_board_bin(self) -> None:
"""Batch result for one board should agree with single-board result on card count."""
single = solve_board(_BINARY_DEAL)
batch = solve_all_boards_bin([_BINARY_DEAL])
self.assertEqual(single["cards"], batch[0]["cards"])
self.assertEqual(single["score"][0], batch[0]["score"][0])
def test_invalid_trump_raises_value_error(self) -> None:
bad = {**_BINARY_DEAL, "trump": 5}
assert_raises(ValueError, solve_all_boards_bin, [bad], match="invalid value 5")
def test_invalid_first_raises_value_error(self) -> None:
bad = {**_BINARY_DEAL, "first": 4}
assert_raises(ValueError, solve_all_boards_bin, [bad], match="invalid value 4")
def test_invalid_trick_suit_raises_value_error(self) -> None:
bad = {**_BINARY_DEAL, "current_trick_suit": (0, 0, 5)}
assert_raises(ValueError, solve_all_boards_bin, [bad], match="invalid value 5")
def test_invalid_trick_rank_raises_value_error(self) -> None:
bad = {**_BINARY_DEAL, "current_trick_rank": (2, 2, 15)}
assert_raises(ValueError, solve_all_boards_bin, [bad], match="invalid value 15")
def test_too_many_boards_raises_value_error(self) -> None:
assert_raises(ValueError, solve_all_boards_bin, [_BINARY_DEAL] * 201, match="exceeds maximum")
def test_invalid_remain_cards_size_raises_value_error(self) -> None:
bad = {**_BINARY_DEAL, "remain_cards": [[0, 0, 0, 0]] * 3} # 3 hands instead of 4
assert_raises(ValueError, solve_all_boards_bin, [bad])
def test_per_board_target_and_solutions(self) -> None:
board = {**_BINARY_DEAL, "target": 9, "solutions": 1, "mode": 0}
results = solve_all_boards_bin([board])
self.assertTrue(_result_shape_ok(results[0]))
def test_different_trump_suits_accepted(self) -> None:
for trump in range(5):
board = {**_BINARY_DEAL, "trump": trump}
results = solve_all_boards_bin([board])
self.assertEqual(len(results), 1)
def test_max_threads_accepted_and_matches_default(self) -> None:
"""Passing an explicit max_threads must be accepted and give the same results as the default."""
boards = [_BINARY_DEAL] * 3
default = solve_all_boards_bin(boards)
for max_threads in (1, 2):
capped = solve_all_boards_bin(boards, max_threads=max_threads)
self.assertEqual(len(capped), len(default))
for capped_r, default_r in zip(capped, default):
# Only the first `cards` entries of a result are meaningful.
cards = capped_r["cards"]
self.assertEqual(cards, default_r["cards"])
for key in ("suit", "rank", "equals", "score"):
self.assertEqual(capped_r[key][:cards], default_r[key][:cards])
class TestSolveAllBoardsParity(unittest.TestCase):
"""Cross-function consistency between PBN and binary batch variants."""
def test_pbn_and_bin_agree_on_cards(self) -> None:
"""solve_all_boards_pbn and solve_all_boards_bin should agree on trick count and top score."""
pbn_results = solve_all_boards_pbn([{"remain_cards": _PBN, "trump": 4, "first": 0}])
bin_results = solve_all_boards_bin([_BINARY_DEAL])
self.assertEqual(pbn_results[0]["cards"], bin_results[0]["cards"])
self.assertEqual(pbn_results[0]["score"][0], bin_results[0]["score"][0])
if __name__ == "__main__":
unittest.main()
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