7bcababf82
Adds the first-tick bootstrap diff: ToLoadNear for the (2*near+1)^2 inner window, ToLoadFar for the outer annulus up to FarRadius. Uses Chebyshev distance, matching existing Recenter convention. Also renames the single-tier RecenterTo → RecenterToSingleTier to free the canonical name for the upcoming two-tier overload (T5). Updates StreamingRegionTests and StreamingController to call the renamed method. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
37 lines
1.4 KiB
C#
37 lines
1.4 KiB
C#
using AcDream.App.Streaming;
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using Xunit;
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namespace AcDream.Core.Tests.Streaming;
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public class StreamingRegionTwoTierTests
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{
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[Fact]
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public void Constructor_TwoRadii_ExposesNearAndFarRadii()
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{
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var region = new StreamingRegion(centerX: 100, centerY: 100, nearRadius: 4, farRadius: 12);
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Assert.Equal(4, region.NearRadius);
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Assert.Equal(12, region.FarRadius);
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Assert.Equal(100, region.CenterX);
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Assert.Equal(100, region.CenterY);
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// Radius (used by existing single-radius hysteresis math) must alias to
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// FarRadius — the outer ring drives "everything currently loaded" bookkeeping.
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// If a future change mistakenly aliases Radius to NearRadius, hysteresis
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// becomes (NearRadius+2) for the far-tier unload, which is wrong.
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Assert.Equal(region.FarRadius, region.Radius);
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}
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[Fact]
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public void RecenterTo_FirstTick_SplitsLoadIntoNearAndFar()
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{
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// near=1, far=3 → near window is 3×3=9, far window is 7×7-3×3=40 LBs.
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var region = new StreamingRegion(centerX: 100, centerY: 100, nearRadius: 1, farRadius: 3);
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var diff = region.ComputeFirstTickDiff();
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Assert.Equal(9, diff.ToLoadNear.Count);
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Assert.Equal(40, diff.ToLoadFar.Count);
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Assert.Empty(diff.ToPromote);
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Assert.Empty(diff.ToDemote);
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Assert.Empty(diff.ToUnload);
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}
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}
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