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ai-agent-book/chapter9/self-evolving-tools/test_tool_result_bad_json.py
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ai-agent-book 精选快照(<2MB 代码与文档,来自 github.com/bojieli/ai-agent-book)
2026-08-20 13:12:50 +00:00

31 lines
1.3 KiB
Python

"""Regression: malformed __TOOL_RESULT__ JSON must not raise JSONDecodeError."""
import tempfile
from pathlib import Path
from tool_manager import ToolLibrary
def test_malformed_tool_result_returns_error_dict():
lib = ToolLibrary(library_dir=Path(tempfile.mkdtemp()))
# Tool prints a broken marker line, then would have returned ok — driver still emits marker from wrapper.
# Inject via code that prints a bad marker before the wrapper's print by overriding run to print bad then return.
code = (
"def run(**kwargs):\n"
" print('__TOOL_RESULT__{not-json')\n"
" return {'ok': True}\n"
)
rec = {"name": "t", "description": "d", "parameters": {"type": "object", "properties": {}}, "code": code}
out = lib._run_record(rec, {})
assert isinstance(out, dict)
assert out.get("success") is False
assert "invalid result marker" in out.get("error", "")
def test_valid_tool_result_still_succeeds():
lib = ToolLibrary(library_dir=Path(tempfile.mkdtemp()))
code = "def run(**kwargs):\n return {'ok': True}\n"
rec = {"name": "t", "description": "d", "parameters": {"type": "object", "properties": {}}, "code": code}
out = lib._run_record(rec, {})
assert out.get("success") is True
assert out.get("result") == {"ok": True}