mirror of
https://github.com/kuhyx/testsAndMisc.git
synced 2026-07-04 20:23:11 +02:00
Krzysztof kuhy Rudnicki
1e108d1e3f
- Fix lint issues in keyboard_coop, lichess_bot, and tag_divider tests - Prefix unused parameters with underscore instead of noqa: ARG002
298 lines
10 KiB
Python
298 lines
10 KiB
Python
"""Unit tests for lichess_bot engine module."""
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import json
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from pathlib import Path
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import subprocess
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from unittest.mock import MagicMock, patch
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import chess
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import pytest
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from python_pkg.lichess_bot.engine import RandomEngine
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class TestRandomEngineInit:
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"""Tests for RandomEngine initialization."""
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def test_init_with_missing_engine_raises(self) -> None:
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"""Test that missing engine raises FileNotFoundError."""
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with pytest.raises(FileNotFoundError, match="C engine not found"):
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RandomEngine(engine_path="/nonexistent/path/to/engine")
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def test_init_with_non_executable_raises(self, tmp_path: Path) -> None:
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"""Test that non-executable engine raises FileNotFoundError."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("not executable")
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with pytest.raises(FileNotFoundError, match="not executable"):
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RandomEngine(engine_path=str(fake_engine))
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def test_init_with_valid_engine(self, tmp_path: Path) -> None:
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"""Test successful initialization with valid engine."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("#!/bin/bash\necho test")
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fake_engine.chmod(0o755)
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engine = RandomEngine(engine_path=str(fake_engine), max_time_sec=1.0, depth=5)
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assert engine.engine_path == fake_engine
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assert engine.max_time_sec == 1.0
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assert engine.depth == 5
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class TestCallEngine:
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"""Tests for _call_engine method."""
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@pytest.fixture
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def mock_engine(self, tmp_path: Path) -> RandomEngine:
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"""Create an engine with a mock executable."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("#!/bin/bash\necho test")
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fake_engine.chmod(0o755)
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return RandomEngine(engine_path=str(fake_engine))
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def test_call_engine_success(self, mock_engine: RandomEngine) -> None:
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"""Test successful engine call."""
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mock_result = MagicMock()
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mock_result.stdout = "e2e4\n"
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with patch("subprocess.run", return_value=mock_result):
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result = mock_engine._call_engine(["--test"], timeout=1.0)
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assert result == "e2e4"
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def test_call_engine_called_process_error(self, mock_engine: RandomEngine) -> None:
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"""Test engine call with CalledProcessError."""
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error = subprocess.CalledProcessError(1, "cmd", stderr="engine error")
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with (
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patch("subprocess.run", side_effect=error),
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pytest.raises(RuntimeError, match="C engine failed"),
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):
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mock_engine._call_engine(["--test"], timeout=1.0)
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def test_call_engine_timeout(self, mock_engine: RandomEngine) -> None:
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"""Test engine call timeout."""
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error = subprocess.TimeoutExpired("cmd", 1.0)
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with (
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patch("subprocess.run", side_effect=error),
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pytest.raises(TimeoutError, match="C engine timed out"),
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):
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mock_engine._call_engine(["--test"], timeout=1.0)
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class TestChooseMove:
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"""Tests for choose_move methods."""
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@pytest.fixture
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def mock_engine(self, tmp_path: Path) -> RandomEngine:
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"""Create an engine with a mock executable."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("#!/bin/bash\necho test")
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fake_engine.chmod(0o755)
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return RandomEngine(engine_path=str(fake_engine))
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def test_choose_move_returns_valid_move(self, mock_engine: RandomEngine) -> None:
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"""Test choose_move returns a valid move."""
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board = chess.Board()
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with patch.object(mock_engine, "_call_engine", return_value="e2e4"):
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move = mock_engine.choose_move(board)
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assert move == chess.Move.from_uci("e2e4")
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assert move in board.legal_moves
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def test_choose_move_with_explanation_no_legal_moves(
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self, mock_engine: RandomEngine
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) -> None:
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"""Test choose_move_with_explanation when no legal moves."""
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# Create a checkmate position - black king checkmated by rook
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board = chess.Board("k7/2K5/8/8/8/8/8/R7 b - - 0 1")
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move, reason = mock_engine.choose_move_with_explanation(
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board, time_budget_sec=1.0
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)
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assert move is None
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assert reason == "no_legal_moves"
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def test_choose_move_with_explanation_invalid_move(
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self, mock_engine: RandomEngine
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) -> None:
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"""Test choose_move_with_explanation with invalid move from engine."""
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board = chess.Board()
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with (
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patch.object(mock_engine, "_call_engine", return_value="invalid"),
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pytest.raises(RuntimeError, match="Engine returned invalid move"),
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):
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mock_engine.choose_move_with_explanation(board, time_budget_sec=1.0)
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def test_choose_move_with_explanation_illegal_move(
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self, mock_engine: RandomEngine
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) -> None:
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"""Test choose_move_with_explanation with illegal move from engine."""
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board = chess.Board()
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# e2e5 is a valid UCI format but illegal from starting position
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with (
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patch.object(mock_engine, "_call_engine", return_value="e2e5"),
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pytest.raises(RuntimeError, match="Engine returned illegal move"),
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):
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mock_engine.choose_move_with_explanation(board, time_budget_sec=1.0)
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class TestParseEngineAnalysis:
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"""Tests for _parse_engine_analysis method."""
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@pytest.fixture
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def mock_engine(self, tmp_path: Path) -> RandomEngine:
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"""Create an engine with a mock executable."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("#!/bin/bash\necho test")
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fake_engine.chmod(0o755)
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return RandomEngine(engine_path=str(fake_engine))
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def test_parse_valid_json(self, mock_engine: RandomEngine) -> None:
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"""Test parsing valid JSON output."""
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board = chess.Board()
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legal_moves = list(board.legal_moves)
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output = json.dumps(
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{
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"analyze": {"candidate_score": 0.5},
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"chosen_move": "e2e4",
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"chosen_index": 0,
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}
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)
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score, cand_expl, best_move, best_expl = mock_engine._parse_engine_analysis(
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output, legal_moves
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)
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assert score == 0.5
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assert best_move == chess.Move.from_uci("e2e4")
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assert "candidate_score" in cand_expl
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assert "chosen_move" in best_expl
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def test_parse_invalid_json(self, mock_engine: RandomEngine) -> None:
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"""Test parsing invalid JSON output."""
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board = chess.Board()
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legal_moves = list(board.legal_moves)
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score, cand_expl, best_move, _best_expl = mock_engine._parse_engine_analysis(
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"not json", legal_moves
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)
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assert score == 0.0
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assert best_move is None
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assert cand_expl == "not json"
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def test_parse_json_with_illegal_move(self, mock_engine: RandomEngine) -> None:
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"""Test parsing JSON with illegal move."""
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legal_moves = [chess.Move.from_uci("e2e4")]
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output = json.dumps(
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{
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"analyze": {"candidate_score": 1.0},
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"chosen_move": "a1a8", # Not in legal moves
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"chosen_index": 0,
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}
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)
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score, _cand_expl, best_move, _best_expl = mock_engine._parse_engine_analysis(
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output, legal_moves
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)
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assert score == 1.0
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assert best_move is None # Move not in legal moves
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def test_parse_json_without_chosen_move(self, mock_engine: RandomEngine) -> None:
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"""Test parsing JSON without chosen_move field."""
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legal_moves = [chess.Move.from_uci("e2e4")]
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output = json.dumps(
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{
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"analyze": {"candidate_score": 0.7},
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"chosen_index": 0,
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# No chosen_move field
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}
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)
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score, _cand_expl, best_move, _best_expl = mock_engine._parse_engine_analysis(
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output, legal_moves
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)
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assert score == 0.7
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assert best_move is None
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def test_parse_json_without_score(self, mock_engine: RandomEngine) -> None:
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"""Test parsing JSON without candidate_score field."""
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board = chess.Board()
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legal_moves = list(board.legal_moves)
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output = json.dumps(
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{
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"analyze": {}, # No candidate_score
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"chosen_move": "e2e4",
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"chosen_index": 0,
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}
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)
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score, _cand_expl, best_move, _best_expl = mock_engine._parse_engine_analysis(
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output, legal_moves
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)
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assert score == 0.0 # Default score
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assert best_move == chess.Move.from_uci("e2e4")
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class TestEvaluateProposedMove:
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"""Tests for evaluate_proposed_move_with_suggestion method."""
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@pytest.fixture
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def mock_engine(self, tmp_path: Path) -> RandomEngine:
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"""Create an engine with a mock executable."""
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fake_engine = tmp_path / "fake_engine"
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fake_engine.write_text("#!/bin/bash\necho test")
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fake_engine.chmod(0o755)
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return RandomEngine(engine_path=str(fake_engine))
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def test_evaluate_no_legal_moves(self, mock_engine: RandomEngine) -> None:
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"""Test evaluate when no legal moves available."""
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# Create a checkmate position - black king checkmated by rook
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board = chess.Board("k7/2K5/8/8/8/8/8/R7 b - - 0 1")
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score, cand_expl, best_move, best_expl = (
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mock_engine.evaluate_proposed_move_with_suggestion(
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board, "e1e2", time_budget_sec=1.0
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)
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)
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assert score == 0.0
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assert cand_expl == "no_legal_moves"
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assert best_move is None
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assert best_expl == "no_best_move"
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assert score == 0.0
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assert cand_expl == "no_legal_moves"
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assert best_move is None
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assert best_expl == "no_best_move"
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def test_evaluate_with_valid_position(self, mock_engine: RandomEngine) -> None:
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"""Test evaluate with a valid position."""
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board = chess.Board()
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output = json.dumps(
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{
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"analyze": {"candidate_score": 0.3},
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"chosen_move": "e2e4",
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"chosen_index": 0,
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}
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)
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with patch.object(mock_engine, "_call_engine", return_value=output):
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score, _cand_expl, best_move, _best_expl = (
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mock_engine.evaluate_proposed_move_with_suggestion(
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board, "d2d4", time_budget_sec=1.0
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)
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)
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assert score == 0.3
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assert best_move == chess.Move.from_uci("e2e4")
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