basic tests for a wider variety of files

tests/components/DamageComponentUnitTest.cs

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+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);
+    }
+}