Fix serialization of latitude, longitude to TOML

Author: homeworkprod

CHANGELOG.md

@@ -8,6 +8,8 @@
 - Changed type of ``Series`` fields ``alternative_names``,
   ``country_codes`` from ``set[str]`` to ``list[str]``.
 
+- Fixed serialization of party location's latitude and longitude.
+
 - Added testing infrastructure (pytest, GitHub Action).
 
 - Added tests for party, series reading.

src/lanpartydb/writing.py

@@ -21,6 +21,12 @@
 def serialize_party(party: Party) -> str:
     """Serialize party to TOML document."""
     party_dict = _party_to_sparse_dict(party)
+
+    location = party_dict.get('location', None)
+    if location is not None:
+        _convert_decimal_to_float(location, 'latitude')
+        _convert_decimal_to_float(location, 'longitude')
+
     return _write_toml(party_dict)
 
 
@@ -30,6 +36,12 @@ def _party_to_sparse_dict(party: Party) -> dict[str, Any]:
     return data
 
 
+def _convert_decimal_to_float(d: dict[str, Any], key: str) -> None:
+    value = d.get(key)
+    if value is not None:
+        d[key] = float(value)
+
+
 # util
 
 

tests/writing/test_serialize_party.py

@@ -4,6 +4,7 @@
 """
 
 from datetime import date
+from decimal import Decimal
 from textwrap import dedent
 
 import pytest
@@ -46,6 +47,8 @@
                     city='Los Angeles',
                     zip_code='90099',
                     street='123 North Hill Street',
+                    latitude=Decimal('34.06101057935884'),
+                    longitude=Decimal('-118.23974355902666'),
                 ),
                 links=Links(
                     website=Resource(
@@ -70,6 +73,8 @@
             city = "Los Angeles"
             zip_code = "90099"
             street = "123 North Hill Street"
+            latitude = 34.06101057935884
+            longitude = -118.23974355902666
 
             [links.website]
             url = "https://www.superlan.example/"