test(fu2b): failing tests for bare-number extraction (FU-2b)

mcp-server/tests/test_fu2b_reconcile.py

@@ -0,0 +1,50 @@
+"""FU-2b: deterministic bare-number extraction (offline)."""
+from __future__ import annotations
+
+import importlib.util
+from pathlib import Path
+
+import pytest
+
+# Load the migration script as a module (it lives in scripts/, not a package).
+_SCRIPT = Path(__file__).resolve().parents[2] / "scripts" / "fu2b_reconcile_internal_case_numbers.py"
+_spec = importlib.util.spec_from_file_location("fu2b_reconcile", _SCRIPT)
+fu2b = importlib.util.module_from_spec(_spec)
+_spec.loader.exec_module(fu2b)
+
+
+@pytest.mark.parametrize("raw,expected_bare", [
+    ("ערר ‏(‏ועדות ערר - תכנון ובנייה ירושלים‏)‏ 403/17 אהרון ברק נ'", "403-17"),
+    ("ערר (...) 8136-10-24 שחר שות'", "8136-10-24"),          # month preserved
+    ("בל\"מ (...) 1028/20 חלוואני ריאד", "1028-20"),
+    ("8047/23", "8047-23"),                                     # already-bare-ish
+    ("ערר 81002-01-21", "81002-01-21"),
+])
+def test_extract_bare_single_token(raw, expected_bare):
+    bare, flag = fu2b._extract_bare(raw)
+    assert bare == expected_bare
+    assert flag == "OK"
+
+
+def test_extract_bare_no_number():
+    bare, flag = fu2b._extract_bare("ערר אדלר נ' הוועדה")
+    assert bare is None and flag == "NO_NUMBER"
+
+
+def test_extract_bare_multiple_numbers_flagged():
+    # Two case-number-shaped tokens → ambiguous, must NOT auto-pick.
+    bare, flag = fu2b._extract_bare("ערר 403/17 ו-1024/24 מאוחדים")
+    assert bare is None and flag == "MULTI_NUMBER"
+
+
+def test_extract_bare_preserves_month_not_padding():
+    # Month kept exactly; 2-part stays 2-part (no invented month).
+    assert fu2b._extract_bare("ערר 8126/24 פלוני")[0] == "8126-24"
+    assert fu2b._extract_bare("ערר 8126-03-25 פלוני")[0] == "8126-03-25"
+
+
+def test_consistency_flag_when_bare_absent_from_citation():
+    # proposed bare must appear in citation_formatted, else MISMATCH.
+    assert fu2b._consistency_flag("403-17", "ערר (...) 403/17 אהרון ברק") == "OK"
+    assert fu2b._consistency_flag("403-17", "ערר (...) 1975/24 מישהו אחר") == "MISMATCH"
+    assert fu2b._consistency_flag("403-17", "") == "NO_CITATION"