88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
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"""Tests fuer app/wahlperioden.py — Datum→WP-Mapping fuer Aggregations-Sicht (#58).
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Backfill aus #134.
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"""
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from __future__ import annotations
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import pytest
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from app.wahlperioden import wahlperiode_for, all_wahlperioden
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from app.bundeslaender import BUNDESLAENDER
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class TestWahlperiodeFor:
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def test_returns_current_wp_for_date_after_start(self):
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bl = BUNDESLAENDER["NRW"]
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# ein Tag nach Wahlperiode-Start → aktuelle WP
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# (lexikographische ISO-Vergleich-Grenze)
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date_after = bl.wahlperiode_start
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assert wahlperiode_for(date_after, "NRW") == f"NRW-WP{bl.wahlperiode}"
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def test_returns_previous_wp_for_date_before_start(self):
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bl = BUNDESLAENDER["NRW"]
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# ein Datum klar vor dem WP-Start
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assert wahlperiode_for("2010-01-01", "NRW") == f"NRW-WP{bl.wahlperiode - 1}"
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def test_returns_none_for_unknown_bundesland(self):
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assert wahlperiode_for("2026-03-18", "XX") is None
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def test_empty_datum_falls_back_to_current_wp(self):
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bl = BUNDESLAENDER["NRW"]
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assert wahlperiode_for("", "NRW") == f"NRW-WP{bl.wahlperiode}"
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def test_none_datum_falls_back_to_current_wp(self):
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bl = BUNDESLAENDER["NRW"]
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# Aufrufer schickt None; der Code prueft `if not datum`
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assert wahlperiode_for(None, "NRW") == f"NRW-WP{bl.wahlperiode}"
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def test_boundary_date_equals_wp_start(self):
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"""An der WP-Start-Grenze gehoert der Tag zur neuen WP (>=)."""
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bl = BUNDESLAENDER["MV"]
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assert wahlperiode_for(bl.wahlperiode_start, "MV") == f"MV-WP{bl.wahlperiode}"
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def test_doctest_examples(self):
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"""Die Docstring-Examples muessen halten."""
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# 2026-03-18 ist nach MV WP8-Start (2021-09-26)
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assert wahlperiode_for("2026-03-18", "MV") == "MV-WP8"
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# 2020-01-01 ist davor → WP7
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assert wahlperiode_for("2020-01-01", "MV") == "MV-WP7"
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def test_lexicographic_iso_date_works(self):
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"""ISO-Format YYYY-MM-DD vergleicht lexikographisch korrekt."""
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bl = BUNDESLAENDER["NRW"]
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start = bl.wahlperiode_start # z.B. "2022-06-01"
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# Ein Tag davor (gleiches Jahr) gehoert zur Vorgaenger-WP
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if start[5:7] != "01" or start[8:10] != "01":
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# nicht 1. Januar — Day-1 Test einfach moeglich
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year, month, day = int(start[:4]), int(start[5:7]), int(start[8:10])
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if day > 1:
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day_before = f"{year:04d}-{month:02d}-{day-1:02d}"
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else:
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day_before = f"{year:04d}-{month-1:02d}-28"
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assert wahlperiode_for(day_before, "NRW") == f"NRW-WP{bl.wahlperiode - 1}"
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class TestAllWahlperioden:
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def test_includes_each_bundesland(self):
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all_wp = all_wahlperioden()
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# pro BL zwei Eintraege (current + previous)
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assert len(all_wp) == len(BUNDESLAENDER) * 2
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def test_format_is_BL_WPn(self):
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for entry in all_wahlperioden():
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parts = entry.split("-WP")
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assert len(parts) == 2, entry
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bl_code, wp_num = parts
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assert bl_code in BUNDESLAENDER, bl_code
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assert wp_num.isdigit(), wp_num
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def test_no_duplicates(self):
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all_wp = all_wahlperioden()
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assert len(all_wp) == len(set(all_wp))
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def test_contains_known_examples(self):
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all_wp = all_wahlperioden()
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# NRW WP18 + 17 muessen drin sein
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assert "NRW-WP18" in all_wp
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assert "NRW-WP17" in all_wp
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