test: Fix pytest.raises to use specific exception type

Change from generic Exception to AllotropeConversionError
to satisfy ruff B017 linting rule.

Co-Authored-By: Claude Opus 4.1 <noreply@anthropic.com>

Author: nathan-stender

CHANGELOG.md

@@ -5,12 +5,6 @@ All notable changes to this packages will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
-
-### Added
-
-- Global locale support for number parsing - Add `locale` parameter to top-level API functions to support locale-specific number formats (e.g., German "1.234,56" vs US "1,234.56")
-
 ## [0.1.116] - 2026-04-01
 
 ### Added

src/allotropy/parsers/utils/values.py

@@ -14,6 +14,7 @@
 )
 from allotropy.exceptions import AllotropeConversionError, AllotropyParserError
 from allotropy.parsers.constants import NEGATIVE_ZERO
+from allotropy.parsers.utils.locale_number_parser import parse_number_with_locale
 from allotropy.parsers.utils.units import get_quantity_class
 
 PrimitiveValue = str | int | float
@@ -57,10 +58,6 @@ def _try_float(value: str | float | None) -> float:
     # Check if locale-aware parsing is enabled
     locale = _current_locale.get()
     if locale:
-        from allotropy.parsers.utils.locale_number_parser import (
-            parse_number_with_locale,
-        )
-
         try:
             return float(parse_number_with_locale(str(value), locale))
         except AllotropeConversionError:

src/allotropy/to_allotrope.py

@@ -7,6 +7,7 @@
 from allotropy.exceptions import AllotropeConversionError
 from allotropy.named_file_contents import NamedFileContents
 from allotropy.parser_factory import Vendor
+from allotropy.parsers.utils.locale_context import set_locale_context
 from allotropy.types import IOType
 
 VendorType = Vendor | str
@@ -47,8 +48,6 @@ def allotrope_model_from_io(
 
     # Set locale context for parsing
     if locale:
-        from allotropy.parsers.utils.locale_context import set_locale_context
-
         with set_locale_context(locale):
             return parser.to_allotrope(named_file_contents)
     else:

tests/to_allotrope_locale_test.py

@@ -4,6 +4,7 @@
 
 import pytest
 
+from allotropy.exceptions import AllotropeConversionError
 from allotropy.to_allotrope import allotrope_from_io
 
 
@@ -14,18 +15,16 @@ def test_locale_parameter_is_optional() -> None:
     csv_content = b"A,B\n1,2\n3,4"
     # We expect this to fail because we don't have a real parser for raw CSV,
     # but it should fail at parser creation, not at locale handling
-    with pytest.raises(Exception):
-        allotrope_from_io(
-            BytesIO(csv_content), "test.csv", "UNKNOWN_VENDOR"
-        )
+    with pytest.raises(AllotropeConversionError):
+        allotrope_from_io(BytesIO(csv_content), "test.csv", "UNKNOWN_VENDOR")
 
 
 def test_locale_parameter_accepts_string() -> None:
     """Verify that locale parameter accepts locale strings."""
     csv_content = b"A,B\n1,2\n3,4"
     # We expect this to fail because we don't have a real parser for raw CSV,
     # but it should fail at parser creation, not at locale handling
-    with pytest.raises(Exception):
+    with pytest.raises(AllotropeConversionError):
         allotrope_from_io(
             BytesIO(csv_content),
             "test.csv",
@@ -39,7 +38,7 @@ def test_locale_parameter_accepts_none() -> None:
     csv_content = b"A,B\n1,2\n3,4"
     # We expect this to fail because we don't have a real parser for raw CSV,
     # but it should fail at parser creation, not at locale handling
-    with pytest.raises(Exception):
+    with pytest.raises(AllotropeConversionError):
         allotrope_from_io(
             BytesIO(csv_content),
             "test.csv",