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

chapter5/code-for-logic/test_silent_resident.py

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+import sys
+from pathlib import Path
+
+# Ensure csp_solver module can be resolved regardless of working directory
+sys.path.insert(0, str(Path(__file__).parent))
+
+from csp_solver import solve, solve_labeled
+
+
+def test_csp_solver_handles_silent_resident():
+    """Verify solve handles residents in names that make no statements.
+
+    Contract: In Knights and Knaves puzzles, residents listed in `names` may be
+    silent (spoken about by others without making statements themselves).
+    `solve` must skip adding speaker-statement constraints for silent residents
+    rather than raising KeyError.
+    """
+    names = ["A", "B"]
+    # A speaks about B ("B is a knave"), but B makes no statement.
+    structs = {"A": ["is", "B", "knave"]}
+
+    solutions = solve(names, structs)
+    assert len(solutions) == 2
+    # If A is knight (True), B must be knave (False); if A is knave (False), B must be knight (True).
+    assert {"A": True, "B": False} in solutions
+    assert {"A": False, "B": True} in solutions
+
+    labeled = solve_labeled(names, structs)
+    assert {"A": "knight", "B": "knave"} in labeled
+    assert {"A": "knave", "B": "knight"} in labeled