ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter10/voice-werewolf/test_simultaneous_deaths_consensus.py

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+import pytest
+from werewolf.game import Judge
+from werewolf.agent import PlayerAgent
+from werewolf.roles import Role, Faction
+
+def test_simultaneous_deaths_returns_undecided_faction():
+    """Contract proved: Judge._check_winner returns Faction.UNDECIDED when all wolves and good players die simultaneously.
+    Bug locked out: returning Faction.GOOD when zero good players survive alongside zero wolves."""
+    # Setup players: 1 Werewolf and 1 Witch (Good)
+    p_wolf = PlayerAgent("P1", Role.WEREWOLF, offline=True)
+    p_witch = PlayerAgent("P2", Role.WITCH, offline=True)
+    judge = Judge([p_wolf, p_witch])
+    
+    # Both players die in night phase
+    p_wolf.alive = False
+    p_witch.alive = False
+    
+    # Check winner must report UNDECIDED, not GOOD when zero good players survive
+    winner = judge._check_winner()
+    assert winner == Faction.UNDECIDED