diff --git a/TUnit.Core/TestDetails.Metadata.cs b/TUnit.Core/TestDetails.Metadata.cs
index fac756338c..d5f2e15437 100644
--- a/TUnit.Core/TestDetails.Metadata.cs
+++ b/TUnit.Core/TestDetails.Metadata.cs
@@ -14,4 +14,5 @@ public partial class TestDetails
     bool ITestDetailsMetadata.HasAttribute<T>() => HasAttribute<T>();
     IEnumerable<T> ITestDetailsMetadata.GetAttributes<T>() => GetAttributes<T>();
     IReadOnlyList<Attribute> ITestDetailsMetadata.GetAllAttributes() => GetAllAttributes();
+
 }
diff --git a/TUnit.Core/TestDetails.cs b/TUnit.Core/TestDetails.cs
index b10daeb267..4227e5b81c 100644
--- a/TUnit.Core/TestDetails.cs
+++ b/TUnit.Core/TestDetails.cs
@@ -9,6 +9,8 @@ namespace TUnit.Core;
 /// </summary>
 public partial class TestDetails : ITestIdentity, ITestClass, ITestMethod, ITestConfiguration, ITestLocation, ITestDetailsMetadata
 {
+    private readonly IReadOnlyList<Attribute> _allAttributes;
+
     // Zero-allocation interface properties for organized API access
     public ITestIdentity Identity => this;
     public ITestClass Class => this;
@@ -40,19 +42,9 @@ public partial class TestDetails : ITestIdentity, ITestClass, ITestMethod, ITest
 
     public required IReadOnlyDictionary<Type, IReadOnlyList<Attribute>> AttributesByType { get; init; }
 
-    private readonly Lazy<IReadOnlyList<Attribute>> _cachedAllAttributes;
-
-    public TestDetails()
+    public TestDetails(IReadOnlyList<Attribute> allAttributes)
     {
-        _cachedAllAttributes = new Lazy<IReadOnlyList<Attribute>>(() =>
-        {
-            var allAttrs = new List<Attribute>();
-            foreach (var attrList in AttributesByType?.Values ?? [])
-            {
-                allAttrs.AddRange(attrList);
-            }
-            return allAttrs;
-        });
+        _allAttributes = allAttributes;
     }
 
     /// <summary>
@@ -75,10 +67,9 @@ public IEnumerable<T> GetAttributes<T>() where T : Attribute
 
     /// <summary>
     /// Gets all attributes as a flattened collection.
-    /// Cached after first access for performance.
     /// </summary>
     /// <returns>All attributes associated with this test.</returns>
-    public IReadOnlyList<Attribute> GetAllAttributes() => _cachedAllAttributes.Value;
+    public IReadOnlyList<Attribute> GetAllAttributes() => _allAttributes;
 
     /// <summary>
     /// Resolved generic type arguments for the test method.
@@ -96,4 +87,4 @@ public IEnumerable<T> GetAttributes<T>() where T : Attribute
 /// <summary>
 /// Generic version of TestDetails for compatibility with tests
 /// </summary>
-public class TestDetails<T> : TestDetails where T : class;
+public class TestDetails<T>(IReadOnlyList<Attribute> allAttributes) : TestDetails(allAttributes) where T : class;
diff --git a/TUnit.Engine/Building/TestBuilder.cs b/TUnit.Engine/Building/TestBuilder.cs
index ffb901e5dc..06cec57a2a 100644
--- a/TUnit.Engine/Building/TestBuilder.cs
+++ b/TUnit.Engine/Building/TestBuilder.cs
@@ -978,7 +978,7 @@ private async ValueTask<TestContext> CreateTestContextAsync(string testId, TestM
             attributes = [..attributes, (Attribute)testBuilderContext.DataSourceAttribute];
         }
 
-        var testDetails = new TestDetails
+        var testDetails = new TestDetails(attributes)
         {
             TestId = testId,
             TestName = metadata.TestName,
@@ -1074,7 +1074,8 @@ private async Task<AbstractExecutableTest> CreateFailedTestForDataGenerationErro
 
     private async Task<TestDetails> CreateFailedTestDetails(TestMetadata metadata, string testId)
     {
-        return new TestDetails
+        var attributes = (await InitializeAttributesAsync(metadata.AttributeFactory.Invoke()));
+        return new TestDetails(attributes)
         {
             TestId = testId,
             TestName = metadata.TestName,
@@ -1087,7 +1088,7 @@ private async Task<TestDetails> CreateFailedTestDetails(TestMetadata metadata, s
             TestLineNumber = metadata.LineNumber,
             ReturnType = typeof(Task),
             MethodMetadata = metadata.MethodMetadata,
-            AttributesByType = (await InitializeAttributesAsync(metadata.AttributeFactory.Invoke())).ToAttributeDictionary(),
+            AttributesByType = attributes.ToAttributeDictionary(),
             Timeout = TimeSpan.FromMinutes(30) // Default 30-minute timeout (can be overridden by TimeoutAttribute)
         };
     }
diff --git a/TUnit.Engine/Building/TestBuilderPipeline.cs b/TUnit.Engine/Building/TestBuilderPipeline.cs
index 23884ba399..54b3dae40f 100644
--- a/TUnit.Engine/Building/TestBuilderPipeline.cs
+++ b/TUnit.Engine/Building/TestBuilderPipeline.cs
@@ -249,7 +249,7 @@ private async Task<AbstractExecutableTest[]> GenerateDynamicTests(TestMetadata m
             var attributes = metadata.AttributeFactory();
 
             // Create TestDetails for dynamic tests
-            var testDetails = new TestDetails
+            var testDetails = new TestDetails(attributes)
             {
                 TestId = testId,
                 TestName = metadata.TestName,
@@ -377,7 +377,7 @@ private async IAsyncEnumerable<AbstractExecutableTest> BuildTestsFromSingleMetad
                         : baseDisplayName;
 
                     // Create TestDetails for dynamic tests
-                    var testDetails = new TestDetails
+                    var testDetails = new TestDetails(attributes)
                     {
                         TestId = testId,
                         TestName = resolvedMetadata.TestName,
@@ -457,7 +457,7 @@ private AbstractExecutableTest CreateFailedTestForDataGenerationError(TestMetada
         var testId = TestIdentifierService.GenerateFailedTestId(metadata);
         var displayName = $"{metadata.TestClassType.Name}.{metadata.TestName}";
 
-        var testDetails = new TestDetails
+        var testDetails = new TestDetails([])
         {
             TestId = testId,
             TestName = metadata.TestName,
@@ -509,7 +509,7 @@ private AbstractExecutableTest CreateFailedTestForGenericResolutionError(TestMet
         var testId = TestIdentifierService.GenerateFailedTestId(metadata);
         var displayName = $"{metadata.TestName} [GENERIC RESOLUTION ERROR]";
 
-        var testDetails = new TestDetails
+        var testDetails = new TestDetails([])
         {
             TestId = testId,
             TestName = metadata.TestName,
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
index e9f46064a1..a37b740d48 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
@@ -1420,7 +1420,7 @@ namespace
     }
     public class TestDetails : ., ., ., ., ., .
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
         public . Attributes { get; }
         public required .<, .<>> AttributesByType { get; init; }
         public .<string> Categories { get; }
@@ -1457,7 +1457,7 @@ namespace
     public class TestDetails<T> : .TestDetails
         where T :  class
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
     }
     public class TestDiscoveryContext : .Context
     {
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
index 8cc53af1a3..f6dc6eb0b9 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
@@ -1420,7 +1420,7 @@ namespace
     }
     public class TestDetails : ., ., ., ., ., .
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
         public . Attributes { get; }
         public required .<, .<>> AttributesByType { get; init; }
         public .<string> Categories { get; }
@@ -1457,7 +1457,7 @@ namespace
     public class TestDetails<T> : .TestDetails
         where T :  class
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
     }
     public class TestDiscoveryContext : .Context
     {
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
index ab0af14524..33bedbec01 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
@@ -1420,7 +1420,7 @@ namespace
     }
     public class TestDetails : ., ., ., ., ., .
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
         public . Attributes { get; }
         public required .<, .<>> AttributesByType { get; init; }
         public .<string> Categories { get; }
@@ -1457,7 +1457,7 @@ namespace
     public class TestDetails<T> : .TestDetails
         where T :  class
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
     }
     public class TestDiscoveryContext : .Context
     {
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
index 0b1701f10a..220dd7716f 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
@@ -1375,7 +1375,7 @@ namespace
     }
     public class TestDetails : ., ., ., ., ., .
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
         public . Attributes { get; }
         public required .<, .<>> AttributesByType { get; init; }
         public .<string> Categories { get; }
@@ -1411,7 +1411,7 @@ namespace
     public class TestDetails<T> : .TestDetails
         where T :  class
     {
-        public TestDetails() { }
+        public TestDetails(.<> allAttributes) { }
     }
     public class TestDiscoveryContext : .Context
     {