public IEnumerator ReloadPlayableAsset() { PlayableDirector director = EditorUtilityTest.NewSceneWithDirector(); TimelineClip clip = EditorUtilityTest.CreateTestSISTimelineClip(director); StreamingImageSequencePlayableAsset sisAsset = clip.asset as StreamingImageSequencePlayableAsset; Assert.IsNotNull(sisAsset); string folder = sisAsset.GetFolder(); Assert.IsNotNull(folder); int numOriginalImages = sisAsset.GetNumImages(); Assert.Greater(numOriginalImages, 0); List <WatchedFileInfo> testImages = sisAsset.FindImages(folder); List <string> copiedImagePaths = new List <string>(testImages.Count); foreach (WatchedFileInfo imageFile in testImages) { string fileName = imageFile.GetName(); string src = Path.Combine(folder, fileName); string dest = Path.Combine(folder, "Copied_" + fileName); File.Copy(src, dest, true); copiedImagePaths.Add(dest); } yield return(null); sisAsset.Reload(); yield return(null); Assert.AreEqual(numOriginalImages * 2, sisAsset.GetNumImages()); //Cleanup foreach (string imagePath in copiedImagePaths) { File.Delete(imagePath); } EditorUtilityTest.DestroyTestTimelineAssets(clip); yield return(null); }