102 lines
3.2 KiB
C#
102 lines
3.2 KiB
C#
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using Theriapolis.Core;
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using Theriapolis.Core.World;
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using Theriapolis.Core.World.Generation;
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using Xunit;
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namespace Theriapolis.Tests.Worldgen;
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/// <summary>
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/// Linear feature exclusion (Addendum A §2): no parallel river+rail or rail+road
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/// on the same non-settlement tile. Road+river is allowed — it represents a
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/// bridge crossing (see ValidationPassStage.CheckLinearExclusion).
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/// </summary>
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public sealed class LinearFeatureTests : IClassFixture<WorldCache>
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{
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private readonly WorldCache _cache;
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public LinearFeatureTests(WorldCache cache) => _cache = cache;
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[Theory]
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[InlineData(0xCAFEBABEUL)]
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[InlineData(0x11223344UL)]
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[InlineData(0xDEADBEEFUL)]
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[InlineData(0xFEEDFACEUL)]
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[InlineData(0xABCDEF00UL)]
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[InlineData(0x00112233UL)]
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[InlineData(0x99AABBCCUL)]
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[InlineData(0x12345678UL)]
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[InlineData(0x87654321UL)]
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[InlineData(0x0DEADC0DUL)]
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public void NoParallelLinearFeatures_OnNonSettlementTiles(ulong seed)
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{
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var ctx = _cache.Get(seed);
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var world = ctx.World;
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int W = C.WORLD_WIDTH_TILES;
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int H = C.WORLD_HEIGHT_TILES;
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int violations = 0;
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for (int y = 0; y < H; y++)
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for (int x = 0; x < W; x++)
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{
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ref var tile = ref world.TileAt(x, y);
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if ((tile.Features & FeatureFlags.IsSettlement) != 0) continue;
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bool hasRiver = (tile.Features & FeatureFlags.HasRiver) != 0;
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bool hasRail = (tile.Features & FeatureFlags.HasRail) != 0;
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bool hasRoad = (tile.Features & FeatureFlags.HasRoad) != 0;
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// River + Rail parallel
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if (hasRiver && hasRail &&
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tile.RiverFlowDir != Theriapolis.Core.Util.Dir.None &&
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tile.RailDir != Theriapolis.Core.Util.Dir.None &&
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Theriapolis.Core.Util.Dir.IsParallel(tile.RiverFlowDir, tile.RailDir))
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violations++;
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// Rail + Road (always a violation outside settlements)
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if (hasRail && hasRoad)
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violations++;
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}
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Assert.Equal(0, violations);
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}
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[Fact]
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public void RoadNetwork_HasAtLeastOneRoad()
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{
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var ctx = _cache.Get(0xCAFEBABEUL);
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Assert.NotEmpty(ctx.World.Roads);
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}
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[Fact]
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public void RailNetwork_HasAtLeastOneRailLine()
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{
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if (!C.ENABLE_RAIL) return; // rail subsystem disabled; nothing to assert
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var ctx = _cache.Get(0xCAFEBABEUL);
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Assert.NotEmpty(ctx.World.Rails);
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}
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[Fact]
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public void Roads_AreInWorldPixelSpace()
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{
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var ctx = _cache.Get(0xCAFEBABEUL);
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float maxCoord = C.WORLD_WIDTH_TILES * C.WORLD_TILE_PIXELS;
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foreach (var road in ctx.World.Roads)
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foreach (var pt in road.Points)
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{
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Assert.InRange(pt.X, 0f, maxCoord);
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Assert.InRange(pt.Y, 0f, maxCoord);
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}
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}
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[Fact]
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public void ValidationPassHash_RecordsZeroViolations()
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{
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var ctx = _cache.Get(0xCAFEBABEUL);
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if (!ctx.World.StageHashes.TryGetValue("ValidationPass", out ulong vhash))
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return; // stage didn't record hash — skip
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int violations = (int)(vhash / 1000);
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Assert.Equal(0, violations);
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}
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}
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