Support incomplete model suffixes

tests/test_matcher.py

@@ -177,6 +177,54 @@ def test_unknown_toolkraft_model_does_not_fall_back_to_brand_results(
     assert result.candidates == []
 
 
+@pytest.mark.parametrize(
+    ("query", "sku"),
+    [
+        ("Арс-12", "INS-0017"),
+        ("АРС12", "INS-0017"),
+        ("АРС-18", "INS-0018"),
+        ("PW-12", "INS-0010"),
+        ("TK-12", "INS-0024"),
+        ("ТР-12", "INS-0003"),
+    ],
+)
+def test_model_code_can_omit_only_its_final_letter(
+    matcher: CatalogMatcher, query: str, sku: str
+) -> None:
+    result = matcher.match(query)
+
+    assert result.status == "matched"
+    assert [candidate.sku for candidate in result.candidates] == [sku]
+
+
+@pytest.mark.parametrize(
+    "query",
+    [
+        "АРС-1",
+        "АРС-999",
+        "PW-90",
+        "TK-999",
+        "УШМ АРС-12",
+    ],
+)
+def test_partial_model_does_not_guess_numeric_or_conflicting_models(
+    matcher: CatalogMatcher, query: str
+) -> None:
+    result = matcher.match(query)
+
+    assert result.status == "not_found"
+    assert result.candidates == []
+
+
+def test_complete_neighboring_model_keeps_exact_priority(
+    matcher: CatalogMatcher,
+) -> None:
+    result = matcher.match("АРС-125")
+
+    assert result.status == "matched"
+    assert [candidate.sku for candidate in result.candidates] == ["INS-0020"]
+
+
 @pytest.mark.parametrize("query", ["шурпуоверт на 12в", "шураыввавёрт на 12в"])
 def test_product_type_survives_typos(matcher: CatalogMatcher, query: str) -> None:
     result = matcher.match(query)

tests/test_message_corpus.py

@@ -221,6 +221,7 @@ MORE_MESSAGE_BASELINE_RESULTS: dict[str, ExpectedResult] = {
     "дрель удар мощно 900 хромированый анус долбить": ("ambiguous", ("INS-0009", "INS-0023", "INS-0002")),
     "анус": ("not_found", ()),
     "долбить": ("not_found", ()),
+    "Арс-12": ("matched", ("INS-0017",)),
 }
 
 EXPECTED_RESULTS = VALIDATED_MESSAGE_RESULTS | MORE_MESSAGE_BASELINE_RESULTS