Add WorkItemAttribute

StyleCop.Analyzers/StyleCop.Analyzers.Test/AttributeTests.cs

@@ -22,5 +22,15 @@ public void TestNoDiagnosticAttributeReason()
             var attribute = new NoDiagnosticAttribute(reason);
             Assert.Same(reason, attribute.Reason);
         }
+
+        [Fact]
+        public void TestWorkItemAttribute()
+        {
+            int id = 1234;
+            string issueUri = "https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/2419";
+            var attribute = new WorkItemAttribute(id, issueUri);
+            Assert.Equal(id, attribute.Id);
+            Assert.Same(issueUri, attribute.Location);
+        }
     }
 }

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

@@ -410,6 +410,7 @@
     <Compile Include="SpecialRules\SA0002UnitTests.cs" />
     <Compile Include="Verifiers\CodeFixVerifier.cs" />
     <Compile Include="Verifiers\DiagnosticVerifier.cs" />
+    <Compile Include="WorkItemAttribute.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\build\keys\TestingKey.snk">

StyleCop.Analyzers/StyleCop.Analyzers.Test/WorkItemAttribute.cs

@@ -0,0 +1,37 @@
+// 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
+{
+    using System;
+
+    /// <summary>
+    /// Used to tag test methods or types which are created for a given WorkItem
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true)]
+    public sealed class WorkItemAttribute : Attribute
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="WorkItemAttribute"/> class.
+        /// </summary>
+        /// <param name="id">The ID of the issue in the original tracker where the work item was first reported. This
+        /// could be a GitHub issue or pull request number, or the number of a Microsoft-internal bug.</param>
+        /// <param name="issueUri">The URI where the work item can be viewed. This is a link to work item
+        /// <paramref name="id"/> in the original source.</param>
+        public WorkItemAttribute(int id, string issueUri)
+        {
+            this.Id = id;
+            this.Location = issueUri;
+        }
+
+        public int Id
+        {
+            get;
+        }
+
+        public string Location
+        {
+            get;
+        }
+    }
+}