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

tests/test_ch4_expanded_catalog_limit_null.py

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+import sys, os
+
+sys.path.insert(0, os.path.abspath("chapter4/perception-tools/src"))
+from expanded_catalog import _limit
+
+
+def test_expanded_catalog_limit_null_option_handled():
+    # Options dict with "limit": None (e.g. parsed from JSON '{"limit": null}')
+    limit = _limit({"limit": None}, default=10)
+    assert limit == 10
+
+    # Non-integer / string limit handled cleanly
+    limit_invalid = _limit({"limit": "invalid"}, default=15)
+    assert limit_invalid == 15