GameCult/CultLib
Watch
9
0
Fork
You've already forked CultLib
 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

Caching tests: a store stamped with a newer format version is refused and never rewritten

Browse source 
Pins the release-now-c2a-bumps-format ruling's premise for 2.0.0.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
Meta Vens 2026-10-22 15:39:40 +02:00
commit f91e30eded
1 changed files with 33 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

33
tests/GameCult.Caching.Tests/PreCut2StoreFormatTests.cs
View file

@ -123,6 +123,39 @@ namespace GameCult.Caching.Tests
Assert.That(Refusal("unknown-header.msgpack"), Does.Contain("cultcache.store.v9"));
}
// The release-now-c2a-bumps-format ruling rests on this: a store stamped with a newer format version is refused at
// open, so this runtime cannot rewrite it. The file stays byte-identical through the refusal and through later
// writes to the cache, whose refused store was never attached.
[TestCase("cultcache.store.v3")]
[TestCase("cultcache.store.v9")]
public async Task SingleFileStampedWithANewerFormatIsRefusedAndNeverRewritten(string newerFormat)
{
var root = CopyFixture("single-file-v1");
try
{
var file = Path.Combine(root, "store.msgpack");
var snapshot = CultDocumentMessagePackSerialization.DeserializeSnapshot(File.ReadAllBytes(file));
snapshot.FormatVersion = newerFormat;
File.WriteAllBytes(file, CultDocumentMessagePackSerialization.SerializeSnapshot(snapshot));
var before = File.ReadAllBytes(file);
using var cache = new CultCache();
var error = Assert.Throws<NotSupportedException>(() =>
cache.AddBackingStore(new SingleFileMessagePackBackingStore(file)))!;
Assert.That(error.Message, Does.Contain(newerFormat));
Assert.That(cache.BackingStores, Is.Empty);
await cache.AddAsync(new PreCut2FixtureNote { Text = "written after the refusal" });
await cache.FlushAsync();
Assert.That(File.ReadAllBytes(file), Is.EqualTo(before));
}
finally
{
if (Directory.Exists(root)) Directory.Delete(root, recursive: true);
}
}
[Test]
public void SingleFileRefusesExtraRecordSlotNamingTheRecord()
{