root
9e2216d202
Il piano originale aveva `floor(span/15) + 1` che over-conta a span allineati (span=60min → 5 invece di 4). Il primo fix dell'implementer (`floor(span/15)`) under-conta a span non-allineati (span=16min → 1 invece di 2). Solo `ceil(span/15)` è corretto in entrambi i casi. Aggiunti 2 test che coprono gli scenari non-allineato e boundary-esatto per impedire regressioni. Plan doc allineato. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
"""Unit tests for analysis.data_audit."""
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from __future__ import annotations
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from datetime import UTC, datetime
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from cerbero_bite.analysis.data_audit import _expected_ticks # noqa: PLC2701
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def test_expected_ticks_basic() -> None:
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since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
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until = datetime(2026, 5, 12, 13, 0, tzinfo=UTC)
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# 12:00, 12:15, 12:30, 12:45 → 4 ticks before 13:00
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assert _expected_ticks(since, until) == 4
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def test_expected_ticks_inclusive_left_exclusive_right() -> None:
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since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
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until = datetime(2026, 5, 12, 12, 15, tzinfo=UTC)
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# Only 12:00
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assert _expected_ticks(since, until) == 1
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def test_expected_ticks_unaligned_since_rounds_up() -> None:
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since = datetime(2026, 5, 12, 12, 7, tzinfo=UTC)
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until = datetime(2026, 5, 12, 12, 30, tzinfo=UTC)
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# First aligned tick after 12:07 is 12:15, then 12:30 is excluded
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assert _expected_ticks(since, until) == 1
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def test_expected_ticks_non_multiple_span_uses_ceiling() -> None:
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# Span = 16 min (12:00 → 12:16): ticks 12:00 AND 12:15 are < 12:16.
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# floor(16/15) = 1 would under-count; the correct answer is 2.
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since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
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until = datetime(2026, 5, 12, 12, 16, tzinfo=UTC)
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assert _expected_ticks(since, until) == 2
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def test_expected_ticks_exact_quarter_boundary_is_excluded() -> None:
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# Until landing exactly on a */15 tick: that tick is NOT counted
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# because the window is half-open on the right.
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since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
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until = datetime(2026, 5, 12, 12, 45, tzinfo=UTC)
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# Ticks at 12:00, 12:15, 12:30 → 3 (12:45 excluded)
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assert _expected_ticks(since, until) == 3
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