Add: AddTo test

src/LitMotion/Assets/LitMotion/Tests/Runtime/AddToTest.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine;
+using UnityEngine.TestTools;
+
+namespace LitMotion.Tests.Runtime
+{
+    public class AddToTest
+    {
+        [UnityTest]
+        public IEnumerator Test_AddTo()
+        {
+            var canceled = false;
+            var obj = new GameObject("Target");
+            var handle = LMotion.Create(0f, 1f, 2f)
+                .WithOnCancel(() => canceled = true)
+                .RunWithoutBinding()
+                .AddTo(obj);
+            yield return new WaitForSeconds(0.1f);
+            Object.DestroyImmediate(obj);
+            Assert.IsTrue(canceled);
+        }
+    }
+}