basic tests for a wider variety of files

tests/components/HealthComponentUnitTest.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 HealthComponentUnitTest
+{
+    [TestCase]
+    public void ReadyInitializesCurrentHealth()
+    {
+        var cHealth = new CHealth();
+        cHealth.RHealth = new RHealth(150.0f);
+        // Simulate Godot ready
+        cHealth._Ready();
+        AssertFloat(cHealth.CurrentHealth).IsEqual(150.0f);
+    }
+
+    [TestCase]
+    public void ReduceHealthDecreasesAndDoesNotDeplete()
+    {
+        var cHealth = new CHealth();
+        cHealth.RHealth = new RHealth(100.0f);
+        cHealth.CurrentHealth = 100.0f;
+
+        var damage = new DamageRecord(Vector3.Zero, new RDamage(25.0f, EDamageTypes.Normal));
+        var record = cHealth.ReduceHealth(source: null!, damageRecord: damage);
+
+        AssertFloat(cHealth.CurrentHealth).IsEqual(75.0f);
+        AssertFloat(record.CurrentHealth).IsEqual(75.0f);
+        AssertFloat(record.PreviousHealth).IsEqual(100.0f);
+        AssertFloat(record.MaxHealth).IsEqual(100.0f);
+    }
+
+    [TestCase]
+    public void ReduceHealthTriggersDepletionToZero()
+    {
+        var cHealth = new CHealth();
+        cHealth.RHealth = new RHealth(50.0f);
+        cHealth.CurrentHealth = 50.0f;
+
+        bool depleted = false;
+        cHealth.HealthDepleted += _ => depleted = true;
+
+        var damage = new DamageRecord(Vector3.Zero, new RDamage(100.0f, EDamageTypes.Normal));
+        var record = cHealth.ReduceHealth(source: null!, damageRecord: damage);
+
+        AssertBool(depleted).IsTrue();
+        AssertFloat(cHealth.CurrentHealth).IsEqual(0.0f);
+        AssertFloat(record.CurrentHealth).IsEqual(-50.0f);
+        AssertFloat(record.MaxHealth).IsEqual(50.0f);
+    }
+}