Luis Gonzalez
90 lines
3.3 KiB
C#
90 lines
3.3 KiB
C#
using NUnit.Framework;
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using ProjectM.Simulation;
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using Unity.Collections;
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namespace ProjectM.Tests
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{
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/// <summary>
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/// Pure-function tests for <see cref="StatMath.Apply"/> (no ECS world), mirroring AutoTargetTests.
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/// Pins the ARPG fold order: effective = (base + sum flat) * (1 + sum percentAdd) * product(1 + percentMult).
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/// </summary>
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public class StatMathTests
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{
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static StatModifier Mod(StatTarget target, ModOp op, float value) =>
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new StatModifier { Target = (byte)target, Op = (byte)op, Value = value };
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static float Apply(float baseValue, StatTarget target, params StatModifier[] mods)
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{
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using var arr = new NativeArray<StatModifier>(mods, Allocator.Temp);
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return StatMath.Apply(baseValue, target, arr);
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}
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[Test]
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public void Empty_Returns_Base()
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{
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using var arr = new NativeArray<StatModifier>(0, Allocator.Temp);
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Assert.AreEqual(10f, StatMath.Apply(10f, StatTarget.Damage, arr), 1e-4f);
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}
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[Test]
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public void Flat_Adds()
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{
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Assert.AreEqual(15f, Apply(10f, StatTarget.Damage, Mod(StatTarget.Damage, ModOp.Flat, 5f)), 1e-4f);
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}
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[Test]
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public void Flats_Sum()
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{
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Assert.AreEqual(18f, Apply(10f, StatTarget.Damage,
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Mod(StatTarget.Damage, ModOp.Flat, 5f),
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Mod(StatTarget.Damage, ModOp.Flat, 3f)), 1e-4f);
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}
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[Test]
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public void PercentAdd_Pools()
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{
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// base 10 * (1 + 0.2 + 0.3) = 15
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Assert.AreEqual(15f, Apply(10f, StatTarget.Damage,
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Mod(StatTarget.Damage, ModOp.PercentAdd, 0.2f),
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Mod(StatTarget.Damage, ModOp.PercentAdd, 0.3f)), 1e-4f);
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}
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[Test]
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public void PercentMult_Multiplies_Separately()
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{
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// base 10 * (1+0.5) * (1+0.2) = 18 (note: distinct from a pooled +0.7 = 17)
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Assert.AreEqual(18f, Apply(10f, StatTarget.Damage,
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Mod(StatTarget.Damage, ModOp.PercentMult, 0.5f),
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Mod(StatTarget.Damage, ModOp.PercentMult, 0.2f)), 1e-4f);
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}
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[Test]
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public void Combined_Applies_In_Standard_Order()
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{
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// (10 + 5) * (1 + 0.2) * (1 + 0.5) = 27
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Assert.AreEqual(27f, Apply(10f, StatTarget.Damage,
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Mod(StatTarget.Damage, ModOp.Flat, 5f),
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Mod(StatTarget.Damage, ModOp.PercentAdd, 0.2f),
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Mod(StatTarget.Damage, ModOp.PercentMult, 0.5f)), 1e-4f);
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}
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[Test]
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public void Other_Targets_Are_Ignored()
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{
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// A MoveSpeed modifier must not affect a Damage query.
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Assert.AreEqual(10f, Apply(10f, StatTarget.Damage,
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Mod(StatTarget.MoveSpeed, ModOp.Flat, 100f),
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Mod(StatTarget.MoveSpeed, ModOp.PercentAdd, 5f)), 1e-4f);
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}
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[Test]
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public void Mixed_Targets_Fold_Independently()
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{
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var dmg = Mod(StatTarget.Damage, ModOp.Flat, 5f);
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var spd = Mod(StatTarget.MoveSpeed, ModOp.PercentAdd, 0.5f);
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Assert.AreEqual(15f, Apply(10f, StatTarget.Damage, dmg, spd), 1e-4f);
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Assert.AreEqual(9f, Apply(6f, StatTarget.MoveSpeed, dmg, spd), 1e-4f);
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}
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}
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}
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