Add tests for Requires.NotNull

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.Test/HelperTests/RequiresTests.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
+
+namespace StyleCop.Analyzers.Test.HelperTests
+{
+    using System;
+    using StyleCop.Analyzers.Helpers;
+    using Xunit;
+
+    public class RequiresTests
+    {
+        [Fact]
+        public void TestNotNull()
+        {
+            string parameterName = nameof(parameterName);
+            Requires.NotNull(string.Empty, parameterName);
+        }
+
+        [Fact]
+        public void TestNull()
+        {
+            string parameterName = nameof(parameterName);
+            Assert.Throws<ArgumentNullException>(parameterName, () => Requires.NotNull(default(string), parameterName));
+        }
+    }
+}

StyleCop.Analyzers/StyleCop.Analyzers.Test/StyleCop.Analyzers.Test.csproj

@@ -179,6 +179,7 @@
     <Compile Include="Helpers\UseCultureAttribute.cs" />
     <Compile Include="HelperTests\AccessLevelHelperTests.cs" />
     <Compile Include="HelperTests\IndentationHelperTests.cs" />
+    <Compile Include="HelperTests\RequiresTests.cs" />
     <Compile Include="HelperTests\TokenHelperTests.cs" />
     <Compile Include="HelperTests\TriviaHelperTests.cs" />
     <Compile Include="HelperTests\XmlSyntaxFactoryTests.cs" />