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

chapter7/elo-leaderboard/tests/test_benchmark_zero_div.py

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+"""
+Test suite locking out ZeroDivisionError in benchmark summary print logic
+when time_basic is 0.0 or df_sample is empty.
+"""
+
+def test_benchmark_pct_reduction_zero_division():
+    """
+    Ensure zero time_basic does not raise ZeroDivisionError during benchmark calculation.
+    """
+    time_basic = 0.0
+    time_optimized = 0.0
+    pct_reduction = (1 - time_optimized / time_basic) * 100 if time_basic > 0 else 0.0
+    assert pct_reduction == 0.0
+
+
+def test_benchmark_extrapolation_zero_sample():
+    """
+    Ensure empty df_sample does not raise ZeroDivisionError during extrapolation check.
+    """
+    df_sample = []
+    df_filtered = [1, 2, 3]
+    should_extrapolate = len(df_sample) > 0 and len(df_sample) < len(df_filtered)
+    assert not should_extrapolate