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feat(render #53): EntityClassificationCache.InvalidateLandblock + tests

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Sweep-by-landblock removal for the streaming demote/unload path. Tests
#6, #7, #8 from spec section 7.1 lock in: (a) all matching entries removed,
(b) non-matching entries preserved, (c) idempotent on missing LB.

Phase 1 (cache foundation) complete. 11 cache tests passing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-05-10 17:47:57 +02:00
parent aea4460eae
commit a171e7007b
2 changed files with 71 additions and 0 deletions
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45
tests/AcDream.Core.Tests/Rendering/Wb/EntityClassificationCacheTests.cs
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@ -126,6 +126,51 @@ public class EntityClassificationCacheTests
Assert.Equal(0, cache.Count);
}
[Fact]
public void InvalidateLandblock_RemovesAllMatchingEntries()
{
var cache = new EntityClassificationCache();
cache.Populate(1, 0xA9B40000u, new[] { MakeCachedBatch(1, 0, 6, 0xAA) });
cache.Populate(2, 0xA9B40000u, new[] { MakeCachedBatch(2, 0, 6, 0xBB) });
cache.Populate(3, 0xA9B40000u, new[] { MakeCachedBatch(3, 0, 6, 0xCC) });
Assert.Equal(3, cache.Count);
cache.InvalidateLandblock(0xA9B40000u);
Assert.Equal(0, cache.Count);
Assert.False(cache.TryGet(1, out _));
Assert.False(cache.TryGet(2, out _));
Assert.False(cache.TryGet(3, out _));
}
[Fact]
public void InvalidateLandblock_LeavesNonMatchingEntries()
{
var cache = new EntityClassificationCache();
cache.Populate(1, 0xA9B40000u, new[] { MakeCachedBatch(1, 0, 6, 0xAA) });
cache.Populate(2, 0xA9B50000u, new[] { MakeCachedBatch(2, 0, 6, 0xBB) });
cache.Populate(3, 0xA9B40000u, new[] { MakeCachedBatch(3, 0, 6, 0xCC) });
cache.InvalidateLandblock(0xA9B40000u);
Assert.Equal(1, cache.Count);
Assert.False(cache.TryGet(1, out _));
Assert.True(cache.TryGet(2, out var keep));
Assert.NotNull(keep);
Assert.Equal(0xA9B50000u, keep!.LandblockHint);
Assert.False(cache.TryGet(3, out _));
}
[Fact]
public void InvalidateLandblock_OnMissingLb_NoThrow()
{
var cache = new EntityClassificationCache();
cache.Populate(1, 0xA9B40000u, new[] { MakeCachedBatch(1, 0, 6, 0xAA) });
var ex = Record.Exception(() => cache.InvalidateLandblock(0xDEADBEEFu));
Assert.Null(ex);
Assert.Equal(1, cache.Count);
}
private static CachedBatch MakeCachedBatch(
uint ibo, uint firstIndex, int indexCount, ulong texHandle)
{