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

chapter3/agentic-rag/evaluation/test_evaluate_empty_expected.py

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+"""
+Test suite locking out ZeroDivisionError in RAGEvaluator.evaluate_response
+when test_case contains empty expected_keywords or expected_analysis lists.
+"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.abspath(os.path.dirname(__file__)))
+
+from evaluate import RAGEvaluator
+
+
+def test_evaluate_response_empty_expected_keywords():
+    """
+    Ensure evaluate_response gracefully handles empty expected_keywords without raising ZeroDivisionError.
+    """
+    evaluator = RAGEvaluator.__new__(RAGEvaluator)
+    test_case = {
+        "id": "tc1",
+        "question": "Sample query?",
+        "expected_keywords": []
+    }
+    result = evaluator.evaluate_response("Sample answer", test_case)
+    assert result["metrics"]["keyword_recall"] == 1.0
+
+
+def test_evaluate_response_empty_expected_analysis():
+    """
+    Ensure evaluate_response gracefully handles empty expected_analysis without raising ZeroDivisionError.
+    """
+    evaluator = RAGEvaluator.__new__(RAGEvaluator)
+    test_case = {
+        "id": "tc2",
+        "question": "Sample query?",
+        "expected_analysis": []
+    }
+    result = evaluator.evaluate_response("Sample answer", test_case)
+    assert result["metrics"]["analysis_recall"] == 1.0