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Tests: a cacheless write never takes a record a same-named version of its schema claims

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Kills the written-by-name mutant (the claimant condition compared schema names instead of ids).

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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Meta Vens 2026-10-27 08:37:10 +01:00
commit 01a750afb2
1 changed files with 16 additions and 0 deletions
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16
tests/GameCult.Caching.Tests/RestampOnWriteTests.cs
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@ -540,6 +540,22 @@ namespace GameCult.Caching.Tests
Assert.That(Fingerprint(path), Is.EqualTo(before));
}
// Claiming is by entry, not by schema name: a record under an id a same-named other version of the written schema lists is
// that version's, and a write of Narrow does not take it.
[Test]
public void ACachelessWriterNeverOwnsARecordASameNamedVersionClaims()
{
var path = SeedRenamed(listsNarrow: false, alsoLists: WideId);
var snapshot = Snapshot(path);
foreach (var record in snapshot.Records)
record.SchemaId = WideId;
File.WriteAllBytes(path, CultDocumentMessagePackSerialization.SerializeSnapshot(snapshot));
var before = Fingerprint(path);
Assert.Throws<CultSchemaConflictException>(() => WriteNarrow(path, cacheless: true, CultDocumentRegistry.ForTypes(new[] { typeof(NoteNarrow), typeof(NoteGrownDeclaring) })));
Assert.That(Fingerprint(path), Is.EqualTo(before));
}
// The registry's other types change nothing about a record the written type claims itself.
[Test]
public void AnotherRegisteredTypeDoesNotTakeAWritersOwnDriftRecord()