1 files changed, 21 insertions, 0 deletions
diff --git a/test/Mono.Linker.Tests.Cases.Expectations/Assertions/KeptAttributeAttribute.cs b/test/Mono.Linker.Tests.Cases.Expectations/Assertions/KeptAttributeAttribute.cs
new file mode 100644
index 000000000..c09982a5a
--- /dev/null
+++ b/test/Mono.Linker.Tests.Cases.Expectations/Assertions/KeptAttributeAttribute.cs
@@ -0,0 +1,21 @@
+using System;
+
+namespace Mono.Linker.Tests.Cases.Expectations.Assertions
+{
+	[AttributeUsage (AttributeTargets.All, AllowMultiple = true, Inherited = false)]
+	public class KeptAttributeAttribute : KeptAttribute
+	{
+
+		public KeptAttributeAttribute (string attributeName)
+		{
+			if (string.IsNullOrEmpty (attributeName))
+				throw new ArgumentException ("Value cannot be null or empty.", nameof (attributeName));
+		}
+
+		public KeptAttributeAttribute (Type type)
+		{
+			if (type == null)
+				throw new ArgumentNullException (nameof (type));
+		}
+	}
+}