Colin Maudry
927f56cb1c
Implémente la fonction select_retained() pour la rétention multi-paliers: - Paliers fixes: horaire/12h, 12h/72h, quotidien/21j - Palier mensuel: 12 mois calendaires - Fonction pure, pas de dépendances sur d'autres modules backup Fixes #89 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
from datetime import datetime, timedelta, timezone
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from src.backup.rotation import select_retained
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NOW = datetime(2026, 6, 24, 12, 0, 0, tzinfo=timezone.utc)
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def test_most_recent_always_kept():
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ts = [NOW, NOW - timedelta(hours=2)]
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assert NOW in select_retained(ts, NOW)
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def test_recent_hours_kept_by_hourly_tier():
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t = NOW - timedelta(hours=3)
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assert t in select_retained([t], NOW)
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def test_two_backups_same_hour_keep_newest():
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older = NOW - timedelta(hours=2, minutes=50)
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newer = NOW - timedelta(hours=2, minutes=10)
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retained = select_retained([older, newer], NOW)
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assert newer in retained
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assert older not in retained
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def test_daily_tier_keeps_old_daily_backup():
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t = NOW - timedelta(days=10)
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assert t in select_retained([t], NOW)
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def test_monthly_tier_keeps_one_per_calendar_month():
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older = NOW - timedelta(days=40) # mois M-2 ou M-1 selon calendrier
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same_month_newer = older + timedelta(days=2)
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retained = select_retained([older, same_month_newer], NOW)
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# même mois calendaire -> seul le plus récent du mois est conservé
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assert same_month_newer in retained
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assert older not in retained
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def test_keeps_backup_within_12_months():
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t = NOW - timedelta(days=300)
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assert t in select_retained([t], NOW)
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def test_drops_backup_older_than_12_months():
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t = NOW - timedelta(days=400)
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assert t not in select_retained([t], NOW)
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def test_future_timestamps_ignored():
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t = NOW + timedelta(hours=1)
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assert t not in select_retained([t], NOW)
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