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

chapter4/execution-tools/test_null_language.py

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+"""Null optional language must default to python on public paths."""
+import asyncio
+import tempfile
+from pathlib import Path
+from unittest.mock import MagicMock
+
+from multilang_executor import LanguageExecutor
+from execution_tools import ExecutionTools
+
+
+def test_null_language_executor_defaults_to_python():
+    le = LanguageExecutor(workspace_dir=Path(tempfile.mkdtemp()))
+    result = asyncio.run(le.execute_code("print(42)", language=None, timeout=10))
+    assert isinstance(result, dict)
+    assert result.get("language") == "python"
+    assert "42" in (result.get("stdout") or "")
+
+
+def test_null_language_code_interpreter_defaults(monkeypatch):
+    """Public MCP path: ExecutionTools.code_interpreter(language=None)."""
+    helper = MagicMock()
+    et = ExecutionTools(helper)
+    seen = {}
+
+    async def fake_exec(code, language, timeout=30.0, stdin=None, files=None):
+        seen["language"] = language
+        return {
+            "success": True,
+            "stdout": "ok\n",
+            "stderr": "",
+            "language": language,
+            "returncode": 0,
+            "status": "ok",
+        }
+
+    monkeypatch.setattr(et.lang_executor, "execute_code", fake_exec)
+    import config as cfg
+    monkeypatch.setattr(cfg.Config, "AUTO_VERIFY_CODE", False, raising=False)
+    monkeypatch.setattr(cfg.Config, "REQUIRE_APPROVAL_FOR_DANGEROUS_OPS", False, raising=False)
+    monkeypatch.setattr(cfg.Config, "AUTO_SUMMARIZE_COMPLEX_OUTPUT", False, raising=False)
+
+    out = asyncio.run(et.code_interpreter("print(1)", language=None))
+    assert seen["language"] == "python"
+    assert out["language"] == "python"
+    assert out.get("error") in (None, "")