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

chapter6/async-agent/tests/conftest.py

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+"""Test import bootstrap for the async-agent experiment."""
+
+from pathlib import Path
+import sys
+
+
+EXPERIMENT_ROOT = Path(__file__).resolve().parents[1]
+if str(EXPERIMENT_ROOT) not in sys.path:
+    sys.path.insert(0, str(EXPERIMENT_ROOT))

chapter6/async-agent/tests/test_tasks_env.py

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+"""回归测试：FLUX_TICK_REAL 等浮点环境变量非法时不得让模块导入崩溃。
+
+tasks.py 原来在模块导入时用裸 float() 解析 FLUX_TICK_REAL，
+FLUX_TICK_REAL=abc 会让整个演示脚本以 ValueError 崩溃；现在回退到默认值并打印警告。
+"""
+import importlib
+import os
+import sys
+
+sys.path.insert(0, os.path.dirname(__file__))
+
+import tasks
+
+
+def test_env_float_falls_back_on_malformed(monkeypatch, capsys):
+    monkeypatch.setenv("FLUX_TICK_REAL", "abc")
+    assert tasks._env_float("FLUX_TICK_REAL", 0.4) == 0.4
+    assert "FLUX_TICK_REAL" in capsys.readouterr().out
+
+
+def test_env_float_parses_valid_value(monkeypatch):
+    monkeypatch.setenv("FLUX_TICK_REAL", "0.1")
+    assert tasks._env_float("FLUX_TICK_REAL", 0.4) == 0.1
+
+
+def test_env_float_default_when_unset(monkeypatch):
+    monkeypatch.delenv("FLUX_TICK_REAL", raising=False)
+    assert tasks._env_float("FLUX_TICK_REAL", 0.4) == 0.4
+
+
+def test_module_reload_survives_malformed_env(monkeypatch):
+    """模块级 TICK_REAL 在环境变量非法时不得抛出 ValueError。"""
+    monkeypatch.setenv("FLUX_TICK_REAL", "fast")
+    importlib.reload(tasks)
+    assert tasks.TICK_REAL == 0.4