MovementTests/tests/components/DamageComponentUnitTest.cs

using Godot;
using GdUnit4;
using static GdUnit4.Assertions;
using Movementtests.interfaces;
using Movementtests.systems.damage;

namespace Movementtests.tests;

[TestSuite, RequireGodotRuntime]
public class DamageComponentUnitTest
{
    [TestCase]
    public void DamageModifier_Applies_WhenTypeMatches()
    {
        var modifier = new RDamageModifier(EDamageTypes.Normal, 2.0f);
        var input = new DamageRecord(Vector3.Zero, new RDamage(10.0f, EDamageTypes.Normal));

        var result = modifier.TakeDamage(input);
        AssertFloat(result.Damage.DamageDealt).IsEqual(20.0f);
    }

    [TestCase]
    public void DamageModifier_Ignores_WhenTypeDifferent()
    {
        var modifier = new RDamageModifier(EDamageTypes.Fire, 3.0f);
        var input = new DamageRecord(Vector3.Zero, new RDamage(10.0f, EDamageTypes.Normal));

        var result = modifier.TakeDamage(input);
        AssertFloat(result.Damage.DamageDealt).IsEqual(0.0f);
    }

    [TestCase]
    public void CDamageable_Sums_All_Modifiers()
    {
        var mod1 = new RDamageModifier(EDamageTypes.Normal, 1.0f);
        var mod2 = new RDamageModifier(EDamageTypes.Normal, 0.5f);

        var cDamageable = new CDamageable();
        cDamageable.DamageModifiers = new[] { mod1, mod2 };

        var input = new DamageRecord(Vector3.Zero, new RDamage(10.0f, EDamageTypes.Normal));
        var result = cDamageable.TakeDamage(input);

        // 10*1.0 + 10*0.5 = 15
        AssertFloat(result.Damage.DamageDealt).IsEqual(15.0f);
    }

    [TestCase]
    public void CDamageable_ComputeDamage_DoesNotEmit()
    {
        var mod = new RDamageModifier(EDamageTypes.Normal, 2.0f);
        var cDamageable = new CDamageable();
        cDamageable.DamageModifiers = new[] { mod };

        var input = new DamageRecord(Vector3.Zero, new RDamage(5.0f, EDamageTypes.Normal));
        var result = cDamageable.ComputeDamage(input);
        AssertFloat(result.Damage.DamageDealt).IsEqual(10.0f);
    }
}