thomhurst · thomhurst · Jan 25, 2026 · Jan 19, 2026
diff --git a/TUnit.Core/Helpers/ClassConstructorHelper.cs b/TUnit.Core/Helpers/ClassConstructorHelper.cs
@@ -43,7 +43,7 @@ public static class ClassConstructorHelper
        TestBuilderContext testBuilderContext,
        string testSessionId)
    {
-        var classConstructorAttribute = attributes.OfType<ClassConstructorAttribute>().FirstOrDefault();
+        var classConstructorAttribute = GetClassConstructorAttribute(attributes);

        if (classConstructorAttribute == null)
        {
@@ -78,6 +78,21 @@ public static bool HasClassConstructorAttribute(Attribute[] attributes)
    /// </summary>
    public static ClassConstructorAttribute? GetClassConstructorAttribute(Attribute[] attributes)
    {
-        return attributes.OfType<ClassConstructorAttribute>().FirstOrDefault();
+        return GetClassConstructorAttribute((IReadOnlyList<ClassConstructorAttribute>)attributes);
+    }
+
+    private static ClassConstructorAttribute? GetClassConstructorAttribute(IReadOnlyList<Attribute> attributes)
+    {
+        ClassConstructorAttribute? classConstructorAttribute = null;
+        foreach (Attribute attribute in attributes)
+        {
+            if (attribute is ClassConstructorAttribute classAttribute)
+            {
+                classConstructorAttribute = classAttribute;
+                break;
+            }
+        }
+
+        return classConstructorAttribute;
    }
 }
diff --git a/TUnit.Engine/Building/TestBuilder.cs b/TUnit.Engine/Building/TestBuilder.cs
@@ -947,13 +947,17 @@ public async Task<AbstractExecutableTest> BuildTestAsync(TestMetadata metadata,
    private static string? GetBasicSkipReason(TestMetadata metadata, Attribute[]? cachedAttributes = null)
    {
        var attributes = cachedAttributes ?? metadata.AttributeFactory();
-        var skipAttributes = attributes.OfType<SkipAttribute>();

        SkipAttribute? firstSkipAttribute = null;

        // Check if all skip attributes are basic (non-derived) SkipAttribute instances
-        foreach (var skipAttribute in skipAttributes)
+        foreach (var attribute in attributes)
        {
+            if (attribute is not SkipAttribute skipAttribute)
+            {
+                continue;
+            }
+
            firstSkipAttribute ??= skipAttribute;

            var attributeType = skipAttribute.GetType();