51 lines
1.6 KiB
C#
51 lines
1.6 KiB
C#
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using Theriapolis.Core.World.Generation;
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using Theriapolis.Core.World.Generation.Stages;
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using Xunit;
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namespace Theriapolis.Tests.Worldgen;
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/// <summary>
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/// Addendum A §1: the coastline must have organic noise-based shape across a
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/// range of seeds after the BorderDistortionGen stage runs.
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///
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/// The validator counts maximal runs of consecutive border tiles in four line
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/// orientations (horizontal, vertical, both diagonals). Any run longer than
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/// <see cref="BorderDistortionGenStage.MaxAllowedRunLength"/> tiles is a
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/// violation — this catches both axis-aligned and diagonal ruler-straight
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/// coasts, which the previous cardinal-only 3-run detector missed.
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/// </summary>
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public sealed class BorderOrganicsTests : IClassFixture<WorldCache>
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{
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private readonly WorldCache _cache;
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public BorderOrganicsTests(WorldCache cache) => _cache = cache;
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private int ViolationsForSeed(ulong seed)
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{
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var ctx = _cache.Get(seed);
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return BorderDistortionGenStage.CountStraightViolations(ctx);
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}
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[Fact]
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public void Seed_CAFEBABE_HasZeroStraightViolations()
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{
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Assert.Equal(0, ViolationsForSeed(0xCAFEBABEUL));
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}
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[Theory]
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[InlineData(1UL)]
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[InlineData(42UL)]
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[InlineData(999UL)]
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[InlineData(0xDEAD_BEEFUL)]
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[InlineData(0x1234_5678UL)]
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[InlineData(0xABCD_EF01UL)]
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[InlineData(7777777UL)]
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[InlineData(0xFF00_FF00UL)]
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[InlineData(314159265UL)]
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[InlineData(271828182UL)]
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public void TenSeeds_HaveZeroStraightViolations(ulong seed)
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{
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Assert.Equal(0, ViolationsForSeed(seed));
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}
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}
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