rdmsandClaude Haiku 4.5
80b8b369c7
- Neuer schedule_for() in app/engine/loans.py: vereinheitlicht Tilgungsplan-Erstellung - Laufzeit-Validierung in LoanIn und LoanPatch: 1–1200 Monate - Aufrufstellen aktualisiert (routers/planning.py, services/breakdown.py, services/projection_service.py, services/planning_chart.py) - Keine direkten loan_schedule(Decimal(...)) Aufrufe außerhalb engine/loans.py mehr - Tests für schedule_for und Laufzeit-Grenzen (1, 1200, sowie 0/-5/1201 Ablehnung) Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
48 lines
1.8 KiB
Python
48 lines
1.8 KiB
Python
from datetime import date
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from decimal import Decimal
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from app.engine.loans import add_months, annuity_payment, loan_schedule
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def test_add_months_clamps_month_end():
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assert add_months(date(2026, 1, 31), 1) == date(2026, 2, 28)
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def test_annuity_payment():
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# 10.000 EUR, 6 % p.a., 48 Monate -> 234,85 EUR Monatsrate
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assert annuity_payment(Decimal("10000"), Decimal("6"), 48) == Decimal("234.85")
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def test_annuity_schedule_amortizes_fully():
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plan = loan_schedule(Decimal("10000"), Decimal("6"), 48, date(2026, 8, 1), "annuity")
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assert len(plan) == 48
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assert plan[-1].remaining == Decimal("0.00")
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assert plan[0].due == date(2026, 9, 1)
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assert plan[0].interest == Decimal("50.00") # 10000 * 0,5 %
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assert plan[0].payment < 0
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def test_bullet_loan():
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plan = loan_schedule(Decimal("10000"), Decimal("6"), 12, date(2026, 8, 1), "bullet")
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assert all(i.principal == 0 for i in plan[:-1])
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assert plan[-1].principal == Decimal("10000")
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assert plan[-1].remaining == Decimal("0.00")
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def test_schedule_for_entspricht_loan_schedule():
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from types import SimpleNamespace
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from app.engine.loans import schedule_for
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kredit = SimpleNamespace(principal="1200.00", annual_rate_pct="3.00", term_months=12,
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payout_date=date(2030, 1, 31), repayment_type="annuity")
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assert schedule_for(kredit) == loan_schedule(Decimal("1200.00"), Decimal("3.00"), 12,
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date(2030, 1, 31), "annuity")
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def test_keine_manuelle_tilgungsplan_konvertierung_mehr():
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from pathlib import Path
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app_dir = Path(__file__).resolve().parent.parent / "app"
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engine_loans = app_dir / "engine" / "loans.py"
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treffer = [str(p.relative_to(app_dir)) for p in app_dir.rglob("*.py")
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if p != engine_loans and "loan_schedule(Decimal(" in p.read_text()]
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assert treffer == []
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