From ac312b6772386236f2a275447a7ab8614b681929 Mon Sep 17 00:00:00 2001
From: Jan Kotas <jkotas@microsoft.com>
Date: Fri, 2 Mar 2018 19:47:07 -0800
Subject: [PATCH] Add tests for TypeForwardedFromAttribute (#27599)

Fixes #27554
---
 .../tests/System.Runtime.Tests.csproj         |  1 +
 .../CompilerServices/AttributesTests.cs       | 22 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 src/System.Runtime/tests/System/Runtime/CompilerServices/AttributesTests.cs

diff --git a/src/System.Runtime/tests/System.Runtime.Tests.csproj b/src/System.Runtime/tests/System.Runtime.Tests.csproj
index 6304ccd13245..4ee705af93a9 100644
--- a/src/System.Runtime/tests/System.Runtime.Tests.csproj
+++ b/src/System.Runtime/tests/System.Runtime.Tests.csproj
@@ -165,6 +165,7 @@
     <Compile Include="System\Reflection\TypeTests.GetMember.cs" />
     <Compile Include="System\Runtime\MemoryFailPointTests.cs" />
     <Compile Include="System\Runtime\NgenServicingAttributesTests.cs" />
+    <Compile Include="System\Runtime\CompilerServices\AttributesTests.cs" />
     <Compile Include="System\Runtime\CompilerServices\ConditionalWeakTableTests.cs" />
     <Compile Include="System\Runtime\CompilerServices\StrongBoxTests.cs" />
     <Compile Include="System\Runtime\CompilerServices\RuntimeHelpersTests.cs" />
diff --git a/src/System.Runtime/tests/System/Runtime/CompilerServices/AttributesTests.cs b/src/System.Runtime/tests/System/Runtime/CompilerServices/AttributesTests.cs
new file mode 100644
index 000000000000..876b4d367cbc
--- /dev/null
+++ b/src/System.Runtime/tests/System/Runtime/CompilerServices/AttributesTests.cs
@@ -0,0 +1,22 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Xunit;
+
+namespace System.Runtime.CompilerServices.Tests
+{
+    public static class AttributesTests
+    {
+        [Fact]
+        public static void TypeForwardedToAttributeTests()
+        {
+            string assemblyFullName = "MyAssembly";
+            var attr = new TypeForwardedFromAttribute(assemblyFullName);
+            Assert.Equal(assemblyFullName, attr.AssemblyFullName);
+
+            AssertExtensions.Throws<ArgumentNullException>("assemblyFullName", () => new TypeForwardedFromAttribute(null));
+            AssertExtensions.Throws<ArgumentNullException>("assemblyFullName", () => new TypeForwardedFromAttribute(""));
+        }
+    }
+}