v1: executing-plans 模式生成，54 文件 1320 行 Python

tests/comparator/test_aligner_edge.py

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+import sys, os
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+from comparator.aligner import align_records
+
+
+def test_align_empty_key_value():
+    cobol = [{"ID": "", "V": 1}]
+    java = [{"ID": "", "V": 1}]
+    result = align_records(cobol, java, key_field="ID")
+    assert len(result) == 1
+
+
+def test_align_very_large_key_set():
+    cobol = [{"ID": f"K{i:04d}", "V": i} for i in range(100)]
+    java = [{"ID": f"K{i:04d}", "V": i} for i in range(100)]
+    result = align_records(cobol, java, key_field="ID")
+    assert len(result) == 100
+    assert all(s == "MATCHED" for _, _, s in result)