feat: initialize CCMA member administration

tests/test_dates.py

@@ -0,0 +1,63 @@
+from datetime import date
+
+import pytest
+
+from ccma.domain.dates import (
+    DateValidationError,
+    age_label,
+    calculate_age,
+    format_date_for_display,
+    normalize_date_input,
+    parse_date_input,
+    parse_iso_date,
+    validate_birth_date,
+    validate_member_dates,
+)
+
+
+def test_iso_dates_are_strict_and_real() -> None:
+    assert parse_iso_date("2024-02-29", "Datum") == date(2024, 2, 29)
+    for value in ("29.02.2024", "2024-2-29", "2023-02-29", "irgendwas"):
+        with pytest.raises(DateValidationError):
+            parse_iso_date(value, "Datum")
+
+
+def test_date_input_accepts_german_and_iso_formats() -> None:
+    expected = date(2024, 2, 29)
+    assert parse_date_input("29.02.2024", "Datum") == expected
+    assert parse_date_input("2024-02-29", "Datum") == expected
+    assert normalize_date_input("29.02.2024", "Datum") == "2024-02-29"
+
+
+def test_date_display_uses_system_pattern(monkeypatch) -> None:
+    monkeypatch.setattr("ccma.domain.dates.system_date_pattern", lambda: "%d.%m.%Y")
+    assert format_date_for_display("2024-02-29") == "29.02.2024"
+    monkeypatch.setattr("ccma.domain.dates.system_date_pattern", lambda: "%Y-%m-%d")
+    assert format_date_for_display("2024-02-29") == "2024-02-29"
+
+
+def test_birth_date_checks_future_and_plausibility() -> None:
+    today = date(2026, 6, 21)
+    assert validate_birth_date("2000-06-22", today=today) == date(2000, 6, 22)
+    with pytest.raises(DateValidationError, match="Zukunft"):
+        validate_birth_date("2026-06-22", today=today)
+    with pytest.raises(DateValidationError, match="120"):
+        validate_birth_date("1900-01-01", today=today)
+
+
+def test_member_dates_must_be_chronological() -> None:
+    with pytest.raises(DateValidationError, match="Aufnahmebeschluss"):
+        validate_member_dates(
+            birth_date="2000-01-01",
+            accepted_at="2020-01-02",
+            membership_started_at="2020-01-01",
+            today=date(2026, 6, 21),
+        )
+
+
+def test_age_calculation_and_label() -> None:
+    today = date(2026, 6, 21)
+    assert calculate_age(date(2000, 6, 21), today) == 26
+    assert calculate_age(date(2000, 6, 22), today) == 25
+    assert age_label("2000-06-21", today=today) == "Alter: 26 Jahre"
+    assert age_label("nein", today=today) == "UNGÜLTIGES DATUM"