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MiningCut3Tests: ChunkInfo equals the bits recorded at base 12dfcef5

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Meta Vens 2026-10-11 20:34:59 +02:00
commit c86f28e93f
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26
tests/Aetheria.Shared.Tests/MiningCut3Tests.cs
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@ -313,6 +313,32 @@ public sealed partial class MiningCut3Tests : IDisposable
$"per-tick loop settled at {perTick}, the on-demand value implies {discrete} (settled {settled})");
}
// ChunkInfo's value is not changed by moving its arithmetic under PassiveInfo: six observers at different
// places and bearings, one with a second sensor so the average is live, read the same chunk, and every value
// matches the bits recorded at base 12dfcef5, before the extraction (a different order of the multiplication
// by the chunk's brightness moves them in the last bits).
private static readonly uint[] ChunkInfoAtBase = new uint[] { 1045120030u, 1039274086u, 1030543422u, 1029120970u, 1036363351u, 1035122917u };
[Fact]
public void ChunkInfoIsBitIdenticalToItsValueBeforeTheExtraction()
{
var kind = Kind("Asteroid", 1f);
var s = BuildScene(new[] { kind }, Belt(kind, Rock(150f)));
var chunk = new ChunkId(s.Belts[0], 0);
var places = new[] { float2(50, -150), float2(-80, -60), float2(10, 200), float2(-300, 40), float2(120, 120), float2(0, -400) };
var values = new List<float>();
for (var i = 0; i < places.Length; i++)
{
var observer = SpawnShip(s, places[i], sensor: true, secondSensor: i == 2);
Tick((observer, places[i])); // brings the sensors online
values.Add(observer.ChunkInfo(chunk));
}
Assert.All(values, v => Assert.InRange(v, 1e-4f, .99f)); // a live, unsaturated reading at every place
var actual = values.Select(Bits).ToArray();
Assert.True(actual.SequenceEqual(ChunkInfoAtBase), "ChunkInfo bits: " + string.Join(",", actual));
}
// A chunk outside every sun's light is dark: no visibility, no info, and it cannot be picked, while a lit
// chunk of the same belt and kind can.
[Fact]