Humble Object Patternな話
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Roppongi.unity #01のLT資料です。 SpeakerDeckにアップロードできなかったのでSlideShareに上げています。 最新のスライドは以下から https://speakerdeck.com/adarapata
![public class PlayerUnit : MonoBehaviour {
[SerializeField]
private float _speed = 1F;
void Update()
{
var horizontal = Input.GetAxis("Horizontal");
var vertical = Input.GetAxis("Vertical");
Move(new Vector3(horizontal, vertical));
}
private void Move(Vector3 direction)
{
transform.position += direction * _speed;
}
}
きちんと任意の方向に動くかテストを実装したい
Roppongi.unity #1 2019/02/21](https://image.slidesharecdn.com/humbleobjectpattern-190221110412/85/Humble-Object-Pattern-10-320.jpg)
![public class PlayerUnitHumble : MonoBehaviour, IPlayerUnit {
[SerializeField]
private float _speed = 1F;
private PlayerUnitController _controller;
public float Speed => _speed;
public Vector3 Position {
get => transform.position;
set => transform.position = value;
}
void Start() => _controller = new PlayerUnitController(this);
void Update() {
var horizontal = Input.GetAxis("Horizontal");
var vertical = Input.GetAxis("Vertical");
_controller.Move(new Vector3(horizontal, vertical));
}
}
Roppongi.unity #1 2019/02/21](https://image.slidesharecdn.com/humbleobjectpattern-190221110412/85/Humble-Object-Pattern-13-320.jpg)
![テストコード
public class PlayerUnitTest {
// テスト用のいい感じモック
public class MockPlayerUnit : IPlayerUnit {
public float Speed { get; set; }
public Vector3 Position { get; set; }
}
[Test]
public void PlayerUnitMove() {
var unit = new MockPlayerUnit { Speed = 5, Position = Vector3.zero };
var controller = new PlayerUnitController(unit);
controller.Move(Vector3.up);
Assert.AreEqual(new Vector3(0,5F,0), unit.Position);
}
}
Roppongi.unity #1 2019/02/21](https://image.slidesharecdn.com/humbleobjectpattern-190221110412/85/Humble-Object-Pattern-17-320.jpg)
Humble Object Patternな話
- 1. Humble Object Patternな話 Roppongi.unity #1 2019/02/21 Roppongi.unity #1 2019/02/21
- 4. 今日の話 Humble Object Pattern について Roppongi.unity #1 2019/02/21
- 8. コスト高いのでテスト避けたい わかる 時にはそういう判断も必要かもしれない 書かない≠ 書けない 書けない理由は明らかにすべき。 ピラミッドの境界を跨ぐような処理を分割していく Roppongi.unity #1 2019/02/21
- 9. Humble Object Pattern とは テストしやすいものとしにくいものを住み分ける実装パターン テストしにくいものの実装をHumble(控え目)にする 多分初出はxUnit Patterns http://xunitpatterns.com/Humble Object.html クリーンアーキテクチャ本にも載ってたので有名かも Roppongi.unity #1 2019/02/21
- 10. public class PlayerUnit : MonoBehaviour { [SerializeField] private float _speed = 1F; void Update() { var horizontal = Input.GetAxis("Horizontal"); var vertical = Input.GetAxis("Vertical"); Move(new Vector3(horizontal, vertical)); } private void Move(Vector3 direction) { transform.position += direction * _speed; } } きちんと任意の方向に動くかテストを実装したい Roppongi.unity #1 2019/02/21
- 12. public interface IPlayerUnit { float Speed { get; } Vector3 Position { get; set; } } // MonoBehavior成分を０にしたけど、移動ロジックを持つクラス public class PlayerUnitController { private readonly IPlayerUnit _unit; public PlayerUnitController(IPlayerUnit unit) { _unit = unit; } public void Move(Vector3 direction) { _unit.Position += direction * _unit.Speed; } } テストを書きにくいMonobehaviorからロジックを抽出するRoppongi.unity #1 2019/02/21
- 13. public class PlayerUnitHumble : MonoBehaviour, IPlayerUnit { [SerializeField] private float _speed = 1F; private PlayerUnitController _controller; public float Speed => _speed; public Vector3 Position { get => transform.position; set => transform.position = value; } void Start() => _controller = new PlayerUnitController(this); void Update() { var horizontal = Input.GetAxis("Horizontal"); var vertical = Input.GetAxis("Vertical"); _controller.Move(new Vector3(horizontal, vertical)); } } Roppongi.unity #1 2019/02/21
- 17. テストコード public class PlayerUnitTest { // テスト用のいい感じモック public class MockPlayerUnit : IPlayerUnit { public float Speed { get; set; } public Vector3 Position { get; set; } } [Test] public void PlayerUnitMove() { var unit = new MockPlayerUnit { Speed = 5, Position = Vector3.zero }; var controller = new PlayerUnitController(unit); controller.Move(Vector3.up); Assert.AreEqual(new Vector3(0,5F,0), unit.Position); } } Roppongi.unity #1 2019/02/21