From 29087319e66619faf0ccc5b3a576fa2557b5fae3 Mon Sep 17 00:00:00 2001
From: Marcel <marcel@familienarchiv>
Date: Mon, 25 May 2026 14:07:20 +0200
Subject: [PATCH] test(normalizer): cover AliasIndex unambiguous first-name
 resolution

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 tools/import-normalizer/tests/test_persons.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/import-normalizer/tests/test_persons.py b/tools/import-normalizer/tests/test_persons.py
index a5c9b0cf..e680f0d4 100644
--- a/tools/import-normalizer/tests/test_persons.py
+++ b/tools/import-normalizer/tests/test_persons.py
@@ -71,3 +71,14 @@ def test_alias_index_suggestion():
     idx = persons.AliasIndex(people)
     sid, score = idx.suggest("Hans Wittkop")  # typo
     assert sid == people[0].person_id and score >= config.FUZZY_SUGGEST_THRESHOLD
+
+def test_alias_index_first_name_only_when_unambiguous():
+    people = persons.parse_register([
+        {"last_name": "Cram", "first_name": "Clara"},
+        {"last_name": "de Gruyter", "first_name": "Walter"},
+        {"last_name": "Cram", "first_name": "Walter"},  # 2nd "Walter" -> first name ambiguous
+    ])
+    idx = persons.AliasIndex(people)
+    assert idx.resolve("Clara") == people[0].person_id   # unique first name resolves
+    assert idx.resolve("Walter") is None                 # ambiguous first name does NOT resolve
+    assert idx.display(people[0].person_id) == "Clara Cram"