"""Unit tests for analysis.data_audit."""

from __future__ import annotations

from datetime import UTC, datetime

from cerbero_bite.analysis.data_audit import _expected_ticks  # noqa: PLC2701


def test_expected_ticks_basic() -> None:
    since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
    until = datetime(2026, 5, 12, 13, 0, tzinfo=UTC)
    # 12:00, 12:15, 12:30, 12:45 → 4 ticks before 13:00
    assert _expected_ticks(since, until) == 4


def test_expected_ticks_inclusive_left_exclusive_right() -> None:
    since = datetime(2026, 5, 12, 12, 0, tzinfo=UTC)
    until = datetime(2026, 5, 12, 12, 15, tzinfo=UTC)
    # Only 12:00
    assert _expected_ticks(since, until) == 1


def test_expected_ticks_unaligned_since_rounds_up() -> None:
    since = datetime(2026, 5, 12, 12, 7, tzinfo=UTC)
    until = datetime(2026, 5, 12, 12, 30, tzinfo=UTC)
    # First aligned tick after 12:07 is 12:15, then 12:30 is excluded
    assert _expected_ticks(since, until) == 1