Christopher Wiebe
b451f83174
Captures the pre-Godot-port state of the codebase. This is the rollback anchor for the Godot port (M0 of theriapolis-rpg-implementation-plan-godot-port.md). All Phase 0 through Phase 6.5 work is included; Phase 7 is in flight. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
77 lines
2.9 KiB
C#
77 lines
2.9 KiB
C#
using Theriapolis.Core;
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using Theriapolis.Core.Data;
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using Theriapolis.Core.Loot;
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using Xunit;
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namespace Theriapolis.Tests.Dungeons;
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/// <summary>
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/// Phase 7 M2 — determinism tests for the dungeon loot generator. Same
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/// (table, containerSeed) → byte-identical item drops, regardless of
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/// process / clock / PRNG warm-up.
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/// </summary>
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public sealed class LootGeneratorTests
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{
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private readonly ContentResolver _content = new(new ContentLoader(TestHelpers.DataDirectory));
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[Fact]
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public void RollContainer_SameSeed_ProducesIdenticalDrops()
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{
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const ulong seed = 0xABCDEF;
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var a = LootGenerator.RollContainer("loot_dungeon_imperium_t2", seed, _content.LootTables, _content.Items);
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var b = LootGenerator.RollContainer("loot_dungeon_imperium_t2", seed, _content.LootTables, _content.Items);
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Assert.Equal(a.Length, b.Length);
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for (int i = 0; i < a.Length; i++)
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{
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Assert.Equal(a[i].Def.Id, b[i].Def.Id);
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Assert.Equal(a[i].Qty, b[i].Qty);
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}
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}
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[Fact]
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public void RollContainer_DifferentSeeds_DivergeAcrossManyRolls()
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{
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// Across 100 (seed, slotIdx) pairs, the *aggregate* drop count
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// should differ between two different base seeds. (A single pair
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// could collide; the population can't, with overwhelming probability.)
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int aTotal = 0, bTotal = 0;
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for (int i = 0; i < 100; i++)
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{
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ulong seedA = 0x10000UL ^ (ulong)i;
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ulong seedB = 0x20000UL ^ (ulong)i;
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aTotal += LootGenerator.RollContainer("loot_dungeon_imperium_t2", seedA, _content.LootTables, _content.Items).Length;
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bTotal += LootGenerator.RollContainer("loot_dungeon_imperium_t2", seedB, _content.LootTables, _content.Items).Length;
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}
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Assert.NotEqual(aTotal, bTotal);
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}
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[Fact]
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public void RollContainer_HonoursDungeonLayoutSeedConvention()
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{
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ulong dungeonLayoutSeed = 0xD06E07AUL ^ 7UL; // simulated — same shape as DungeonGenerator
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var a = LootGenerator.RollContainer(
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"loot_dungeon_imperium_t1", dungeonLayoutSeed, slotIdx: 0,
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_content.LootTables, _content.Items);
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var b = LootGenerator.RollContainer(
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"loot_dungeon_imperium_t1", dungeonLayoutSeed ^ C.RNG_DUNGEON_LOOT ^ 0UL,
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_content.LootTables, _content.Items);
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// Both forms should produce identical results — the convenience
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// overload XORs the same RNG_DUNGEON_LOOT + slotIdx the explicit
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// overload's caller would.
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Assert.Equal(a.Length, b.Length);
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for (int i = 0; i < a.Length; i++)
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{
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Assert.Equal(a[i].Def.Id, b[i].Def.Id);
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Assert.Equal(a[i].Qty, b[i].Qty);
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}
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}
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[Fact]
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public void RollContainer_UnknownTable_ReturnsEmpty()
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{
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var drops = LootGenerator.RollContainer("nonexistent_table", 1, _content.LootTables, _content.Items);
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Assert.Empty(drops);
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}
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}
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