test: 隔离帧动画导入测试临时目录

Co-authored-by: Cursor <cursoragent@cursor.com>

Assets/Tests/FrameAnimation/EditMode/FrameAnimationImportTests.cs

@@ -11,22 +11,30 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
 {
     public sealed class FrameAnimationImportTests
     {
-        private const string TestRoot = "Assets/Tests/FrameAnimation/GeneratedImportTests";
-        private const string TexturePath = TestRoot + "/Atlas.png";
-        private const string JsonPath = TestRoot + "/Atlas.json";
-        private const string GraphPath = TestRoot + "/ImportGraph.asset";
+        private string TestRoot { get; set; }
+        private string TexturePath => TestRoot + "/Atlas.png";
+        private string JsonPath => TestRoot + "/Atlas.json";
+        private string GraphPath => TestRoot + "/ImportGraph.asset";
 
         [SetUp]
         public void SetUp()
         {
-            AssetDatabase.DeleteAsset(TestRoot);
+            TestRoot =
+                $"Assets/Tests/FrameAnimation/GeneratedImportTests_{Guid.NewGuid():N}";
             EnsureFolder(TestRoot);
         }
 
         [TearDown]
         public void TearDown()
         {
-            AssetDatabase.DeleteAsset(TestRoot);
+            if (!string.IsNullOrEmpty(TestRoot))
+            {
+                Assert.That(
+                    AssetDatabase.DeleteAsset(TestRoot),
+                    Is.True,
+                    $"Failed to delete test asset folder: {TestRoot}");
+            }
+
             AssetDatabase.Refresh();
         }
 
@@ -329,7 +337,7 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
             Assert.That(graph.Clips, Is.Empty);
         }
 
-        private static FrameAnimationGraph CreateWritableGraph(string json)
+        private FrameAnimationGraph CreateWritableGraph(string json)
         {
             CreateTexture();
             WriteJson(json);
@@ -347,7 +355,7 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
             return graph;
         }
 
-        private static void CreateTexture()
+        private void CreateTexture()
         {
             var texture = new Texture2D(4, 2, TextureFormat.RGBA32, false);
             var pixels = Enumerable.Range(0, 8)
@@ -360,7 +368,7 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
             AssetDatabase.ImportAsset(TexturePath, ImportAssetOptions.ForceSynchronousImport);
         }
 
-        private static void WriteJson(string json)
+        private void WriteJson(string json)
         {
             File.WriteAllText(JsonPath, json, new UTF8Encoding(false));
             AssetDatabase.ImportAsset(JsonPath, ImportAssetOptions.ForceSynchronousImport);