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feat(missions): JstPeriod helper — 02:00 JST anchored day/week/month keys

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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
gamer147
2026-05-27 10:21:51 -04:00
parent 6fbf7cbc94
commit b38be1d953
2 changed files with 105 additions and 0 deletions
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52
SVSim.UnitTests/Services/JstPeriodTests.cs Normal file
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namespace SVSim.UnitTests.Services;
public class JstPeriodTests
{
private static DateTimeOffset Jst(int y, int m, int d, int h, int min, int s) =>
new DateTimeOffset(y, m, d, h, min, s, TimeSpan.FromHours(9));
[Test]
public void DayKey_uses_jst_with_02_00_anchor()
{
// 01:59:59 JST on May 27 belongs to the May 26 "day".
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.DayKey(Jst(2026, 5, 27, 1, 59, 59)),
Is.EqualTo("day:2026-05-26"));
// 02:00:00 JST on May 27 belongs to the May 27 "day".
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.DayKey(Jst(2026, 5, 27, 2, 0, 0)),
Is.EqualTo("day:2026-05-27"));
}
[Test]
public void WeekKey_is_iso8601_monday_anchored()
{
// 2026-05-25 (Monday) 02:00 JST → ISO week 2026-W22.
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.WeekKey(Jst(2026, 5, 25, 2, 0, 0)),
Is.EqualTo("week:2026-W22"));
// The previous Sunday's late evening still belongs to W21 (week reset is Monday 02:00 JST).
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.WeekKey(Jst(2026, 5, 25, 1, 59, 59)),
Is.EqualTo("week:2026-W21"));
}
[Test]
public void MonthKey_uses_jst_day_anchor_for_month_rollover()
{
// 01:59 JST on June 1 still belongs to May (day-boundary is 02:00 JST).
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.MonthKey(Jst(2026, 6, 1, 1, 59, 0)),
Is.EqualTo("month:2026-05"));
Assert.That(SVSim.EmulatedEntrypoint.Services.JstPeriod.MonthKey(Jst(2026, 6, 1, 2, 0, 0)),
Is.EqualTo("month:2026-06"));
}
[Test]
public void AllPeriods_returns_day_week_month_all_time()
{
var t = Jst(2026, 5, 27, 12, 0, 0);
var periods = SVSim.EmulatedEntrypoint.Services.JstPeriod.AllPeriods(t);
Assert.That(periods, Is.EquivalentTo(new[] {
"day:2026-05-27", "week:2026-W22", "month:2026-05", "all-time",
}));
}
}