53 lines
1.7 KiB
C#
53 lines
1.7 KiB
C#
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using Theriapolis.Core.World.Generation;
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using Xunit;
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namespace Theriapolis.Tests.Determinism;
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/// <summary>
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/// Phase 2+3 determinism contract: same seed → identical settlements and polylines.
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/// Uses variant 0 and variant 1 so the fixture returns two independent pipeline
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/// runs rather than comparing one cached context to itself.
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/// </summary>
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public sealed class Phase23DeterminismTests : IClassFixture<WorldCache>
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{
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private const ulong TestSeed = 0xCAFEBABEUL;
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private readonly WorldCache _cache;
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public Phase23DeterminismTests(WorldCache cache) => _cache = cache;
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[Fact]
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public void SameSeed_ProducesIdenticalSettlements()
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{
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var h1 = _cache.Get(TestSeed, variant: 0).World.HashSettlements();
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var h2 = _cache.Get(TestSeed, variant: 1).World.HashSettlements();
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Assert.Equal(h1, h2);
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}
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[Fact]
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public void SameSeed_ProducesIdenticalPolylines()
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{
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var h1 = _cache.Get(TestSeed, variant: 0).World.HashPolylines();
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var h2 = _cache.Get(TestSeed, variant: 1).World.HashPolylines();
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Assert.Equal(h1, h2);
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}
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[Fact]
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public void DifferentSeeds_ProduceDifferentSettlements()
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{
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var h1 = _cache.Get(TestSeed).World.HashSettlements();
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var h2 = _cache.Get(TestSeed + 7).World.HashSettlements();
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Assert.NotEqual(h1, h2);
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}
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[Theory]
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[InlineData(0xABCD1234UL)]
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[InlineData(0x00000001UL)]
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[InlineData(0xDEADBEEFUL)]
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public void MultipleSeeds_SettlementsAreDeterministic(ulong seed)
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{
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var h1 = _cache.Get(seed, variant: 0).World.HashSettlements();
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var h2 = _cache.Get(seed, variant: 1).World.HashSettlements();
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Assert.Equal(h1, h2);
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}
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}
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