[content automatically redacted] touching PlatformDependent folder

Author: YvainRaeymaekers

Tests/SRPTests/Projects/HDRP_Tests/Assets/GraphicTests/HDRP_EditModeTests/PreviewTests.cs

@@ -1,4 +1,4 @@
-using NUnit.Framework;
+using NUnit.Framework;
 using UnityEngine;
 using UnityEngine.TestTools;
 using Unity.Graphics.Tests;
@@ -7,6 +7,7 @@
 using UnityEditor.SceneManagement;
 using UnityEngine.Rendering;
 using Object = UnityEngine.Object;
+using System;
 
 namespace UnityEditor.Previews
 {
@@ -104,6 +105,52 @@ public IEnumerator CreatePreviewDoesNotLeakMemoryInWorkers()
             }
         }
 
+        // Test case for UUM-63257
+        [UnityTest]
+        public IEnumerator CreateMeshPreviewDoesNotLeakMemoryInWorkers()
+        {
+            var logEntryString = "There are remaining Allocations on the JobTempAlloc.";
+            int prevLogEntryCount = GetLogEntryCount(logEntryString);
+
+            var folderName = "Create_Mesh_Preview_Test";
+            try
+            {
+                AssetDatabase.CreateFolder("Assets", folderName);
+
+                for (int i = 0; i < 2; ++i)
+                {
+                    var meshPath = Path.Combine($"Assets/{folderName}", $"m{i}.mesh");
+                    var mesh = CreateUniqueMiniMesh();
+                    AssetDatabase.CreateAsset(mesh, meshPath);
+                    yield return new WaitForPreview(mesh, 90.0f);
+                }
+
+                //Here we catch any unexpected memory leak messages
+                int logEntryCountAfterTest = GetLogEntryCount(logEntryString);
+                Assert.AreEqual(prevLogEntryCount, logEntryCountAfterTest, "There were leaks in the test");
+            }
+            finally
+            {
+                AssetDatabase.DeleteAsset($"Assets/{folderName}");
+            }
+        }
+
+        Mesh CreateUniqueMiniMesh()
+        {
+            // Use random value because the preview won't be regenerated if the mesh is already present in the library cache
+            float randomValue = (float)new System.Random(Guid.NewGuid().GetHashCode()).NextDouble();
+
+            Mesh mesh = new Mesh();
+            mesh.vertices = new Vector3[]
+            {
+                new Vector3(randomValue, 0, 0),
+                new Vector3(3.0f, 0, 0),
+                new Vector3(0, 1.0f, 0)
+            };
+
+            return mesh;
+        }
+
 
         [UnityTest]
         public IEnumerator AssetPreviewIsCorrect()