MovementTests/tests/components/MovementSystemUnitTest.cs

using Godot;
using GdUnit4;
using static GdUnit4.Assertions;
using Movementtests.interfaces;
using Movementtests.scenes.movement;

namespace Movementtests.tests;

[TestSuite, RequireGodotRuntime]
public class MovementSystemUnitTest
{
    [TestCase]
    public void GroundedMovement_Accelerates_And_Applies_Gravity()
    {
        var move = new CGroundedMovement();
        move.RMovement = new RMovement(speed: 10.0f, acceleration: 1.0f, gravityModifier: 0.5f, targetHeight: 0.0f);
        move.WallInFrontRayCast = new RayCast3D();
        move.GlobalPosition = Vector3.Zero;

        var inputs = new MovementInputs(
            Velocity: Vector3.Zero,
            TargetLocation: new Vector3(10, 0, 0),
            isOnFloor: false,
            gravity: Vector3.Down * 9.8f,
            delta: 1.0
        );

        var v = move.ComputeVelocity(inputs);

        AssertVector(v).IsEqualApprox(new Vector3(10, -4.9f, 0), new Vector3(0.0001f, 0.0001f, 0.0001f));
    }
}