basic tests for a wider variety of files

tests/player/DashSystemUnitTest.cs

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+using Godot;
+using GdUnit4;
+using static GdUnit4.Assertions;
+using Movementtests.systems;
+
+namespace Movementtests.tests;
+
+[TestSuite, RequireGodotRuntime]
+public class DashSystemUnitTest
+{
+    private DashSystem _dashSystem;
+
+    [BeforeTest]
+    public void SetupTest()
+    {
+        _dashSystem = new DashSystem();
+        
+        _dashSystem.DashCast3D = new ShapeCast3D();
+        _dashSystem.AddChild(_dashSystem.DashCast3D);
+        
+        _dashSystem._dashCastDrop = new ShapeCast3D();
+        _dashSystem.AddChild(_dashSystem._dashCastDrop);
+        
+        _dashSystem._dashTarget = new MeshInstance3D();
+        _dashSystem.AddChild(_dashSystem._dashTarget);
+        
+        _dashSystem._dashDropIndicator = new MeshInstance3D();
+        _dashSystem.AddChild(_dashSystem._dashDropIndicator);
+        
+        _dashSystem._dashDropLocationIndicator = new MeshInstance3D();
+        _dashSystem.AddChild(_dashSystem._dashDropLocationIndicator);
+    }
+
+    [AfterTest]
+    public void CleanupTest()
+    {
+        _dashSystem?.Free();
+    }
+
+    [TestCase]
+    public void TestStopPreparingDash()
+    {
+        _dashSystem.CanDashThroughTarget = true;
+        _dashSystem._dashTarget.Visible = true;
+        _dashSystem._dashDropIndicator.Visible = true;
+        _dashSystem._dashDropLocationIndicator.Visible = true;
+        
+        _dashSystem.StopPreparingDash();
+        
+        AssertBool(_dashSystem.CanDashThroughTarget).IsFalse();
+        AssertBool(_dashSystem._dashTarget.Visible).IsFalse();
+        AssertBool(_dashSystem._dashDropIndicator.Visible).IsFalse();
+        AssertBool(_dashSystem._dashDropLocationIndicator.Visible).IsFalse();
+    }
+}