Initialize Article Data Manager project

tests/unit/test_numbers.py

@@ -0,0 +1,20 @@
+import pytest
+
+from article_data_manager.validation.numbers import parse_decimal
+
+
+def test_parse_decimal_accepts_comma_decimal() -> None:
+    assert parse_decimal("6,00") == 6.0
+
+
+def test_parse_decimal_accepts_point_decimal() -> None:
+    assert parse_decimal("1.20") == 1.2
+
+
+def test_parse_decimal_maps_empty_value_to_none() -> None:
+    assert parse_decimal("") is None
+
+
+def test_parse_decimal_rejects_ambiguous_number() -> None:
+    with pytest.raises(ValueError):
+        parse_decimal("1.234,56")