b4edbb1eeb
CultCache mints storedAt from an internal Clock (default the wall clock); the vector writer pins it, so union-surface.cc is regenerated in process and byte-compared on every run. The gate test sets the switch itself and writes only a probe, so it neither skips nor touches a committed vector. This commit does not pass: union-surface.cc still holds the old wall-clock stored-at; the next commit regenerates it. Builds. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
69 lines
2.6 KiB
C#
69 lines
2.6 KiB
C#
#nullable enable
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using System;
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using System.Globalization;
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using System.IO;
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using GameCult.Caching;
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using GameCult.Caching.MessagePack;
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using NUnit.Framework;
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namespace GameCult.Caching.Tests
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{
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// The clock behind every storedAt: the wall clock by default, and a pinned one when a golden store has to reproduce.
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public class CultCacheClockTests
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{
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private static readonly CultDocumentRegistry Registry = CultDocumentRegistry.ForTypes(new[] { typeof(UnionParityVectorTests.UnionSurface) });
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private static readonly CultRecordKey Key = new("surface");
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private string _directory = string.Empty;
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[SetUp]
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public void CreateDirectory()
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{
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_directory = Path.Combine(Path.GetTempPath(), $"cultlib-clock-{Guid.NewGuid():N}");
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Directory.CreateDirectory(_directory);
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}
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[TearDown]
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public void DeleteDirectory()
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{
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if (Directory.Exists(_directory)) Directory.Delete(_directory, recursive: true);
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}
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private CultCache Open() => CultCacheMessagePack.Create(Path.Combine(_directory, "clock.cc"), new CultCacheOpenOptions { Registry = Registry });
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private static string Upsert(CultCache cache)
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{
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cache.UpsertAsync(typeof(UnionParityVectorTests.UnionSurface), new UnionParityVectorTests.UnionSurface(), Key).GetAwaiter().GetResult();
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return cache.GetStored(Key)!.StoredAt;
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}
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[Test]
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public void ADefaultCacheStampsTheWallClock()
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{
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using var cache = Open();
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var before = DateTimeOffset.UtcNow;
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var stamp = DateTimeOffset.Parse(Upsert(cache), CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind);
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var after = DateTimeOffset.UtcNow;
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Assert.That(stamp, Is.InRange(before, after));
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}
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[Test]
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public void APinnedClockIsTheStoredAt()
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{
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var pinned = new DateTimeOffset(2026, 1, 1, 0, 0, 0, TimeSpan.Zero);
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using var cache = Open();
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cache.Clock = () => pinned;
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Assert.That(Upsert(cache), Is.EqualTo("2026-01-01T00:00:00.0000000+00:00"));
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}
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[Test]
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public void APinnedClockStillIncreasesStoredAtPerKey()
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{
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var pinned = new DateTimeOffset(2026, 1, 1, 0, 0, 0, TimeSpan.Zero);
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using var cache = Open();
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cache.Clock = () => pinned;
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Upsert(cache);
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Assert.That(Upsert(cache), Is.EqualTo("2026-01-01T00:00:00.0000001+00:00"), "the same instant again is one tick later");
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}
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}
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}
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