wlfb
020f41e9f2
Implementiert Task 5 mit TDD-Ansatz: projection.py mit Projection-Klasse und project()-Funktion für Cashflow-Simulation; scenario.py mit PlainRecurring, PlainPlanned, PlainModifier Dataclasses und build_cashflows() für Szenarien-Zahlungsströme mit Modifier-Support (remove, percent, absolute). Alle 15 Tests grün. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
21 lines
728 B
Python
21 lines
728 B
Python
from datetime import date
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from decimal import Decimal
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from app.engine.projection import project
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def test_low_point_and_threshold():
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flows = [(date(2026, 8, 1), Decimal("-150")), (date(2026, 8, 10), Decimal("200"))]
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p = project(Decimal("100"), date(2026, 7, 31), flows, horizon_days=15,
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threshold=Decimal("60"))
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assert p.low_point == (date(2026, 8, 1), Decimal("-50"))
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assert p.first_below_zero == date(2026, 8, 1)
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assert p.first_below_threshold == date(2026, 8, 1)
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assert p.series[-1][1] == Decimal("150")
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def test_no_crossing():
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p = project(Decimal("100"), date(2026, 7, 31), [], horizon_days=5)
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assert p.first_below_zero is None
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assert p.low_point[1] == Decimal("100")
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