52 lines
2.3 KiB
C#
52 lines
2.3 KiB
C#
using System.IO;
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using Xunit;
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namespace CultMath.Tests;
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public sealed class PlanetaryMapTileEncodingTests
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{
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[Fact]
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public void BinaryTileRoundTripsIdentityValidityAndSurfaceEvidence()
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{
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var field = PlanetaryFieldDefinition.Create(5, 10, 3, AdvancedErosionParameters.Default);
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var layout = new PlanetaryMapTileLayout(new(PlanetaryProjectionKind.EqualEarth), 1, 1, 0, 5, 1);
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var key = new PlanetaryMapTileKey(field.FieldVersion, 2, 17, layout, PlanetaryQueryScale.AtFootprint(0.25f, 0.1f));
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var tile = PlanetaryMapTileBaker.Bake(field, key, new FlatField());
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using var bytes = new MemoryStream();
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PlanetaryMapTileEncoding.Write(bytes, tile, leaveOpen: true);
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bytes.Position = 0;
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var decoded = PlanetaryMapTileEncoding.Read(bytes);
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Assert.Equal(tile.Key, decoded.Key);
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Assert.Equal(tile.Validity, decoded.Validity);
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for (var i = 0; i < tile.Samples.Length; i++)
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if (tile.Validity[i]) Assert.Equal(tile.Samples[i], decoded.Samples[i]);
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}
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[Fact]
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public void DecoderRejectsForeignMagicAndVersions()
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{
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Assert.Throws<InvalidDataException>(() => PlanetaryMapTileEncoding.Read(new MemoryStream(new byte[] { 1, 2, 3, 4, 1, 0, 0, 0 })));
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var bytes = new byte[] { (byte)'C', (byte)'M', (byte)'P', (byte)'T', 99, 0, 0, 0 };
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Assert.Throws<InvalidDataException>(() => PlanetaryMapTileEncoding.Read(new MemoryStream(bytes)));
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}
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[Fact]
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public void DecoderRejectsTrailingBytes()
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{
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var field = PlanetaryFieldDefinition.Create(2, 1, 0, AdvancedErosionParameters.Default);
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var layout = new PlanetaryMapTileLayout(new(PlanetaryProjectionKind.Equirectangular), 0, 0, 0, 2, 0);
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var key = new PlanetaryMapTileKey(field.FieldVersion, 1, 0, layout, PlanetaryQueryScale.AtFootprint(1));
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var tile = PlanetaryMapTileBaker.Bake(field, key, new FlatField());
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using var bytes = new MemoryStream();
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PlanetaryMapTileEncoding.Write(bytes, tile, leaveOpen: true);
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bytes.WriteByte(0xff);
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bytes.Position = 0;
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Assert.Throws<InvalidDataException>(() => PlanetaryMapTileEncoding.Read(bytes));
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}
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private readonly struct FlatField : IPlanetaryBaseField
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{
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public PlanetaryBaseFieldSample Sample(float3 direction) => new(0, float3.zero, 0, float3.zero, 0);
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}
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}
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