Update SyntaxWrapperHelperTests

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp7/Lightup/SyntaxWrapperHelperTestsCSharp7.cs

@@ -0,0 +1,11 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+namespace StyleCop.Analyzers.Test.CSharp7.Lightup
+{
+    using StyleCop.Analyzers.Test.Lightup;
+
+    public class SyntaxWrapperHelperTestsCSharp7 : SyntaxWrapperHelperTests
+    {
+    }
+}

StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp7/Lightup/WrapperHelperTests.cs

@@ -5,7 +5,7 @@ namespace StyleCop.Analyzers.Test.CSharp8.Lightup
 {
     using StyleCop.Analyzers.Test.CSharp7.Lightup;
 
-    public class WrapperHelperTestsCSharp8 : WrapperHelperTests
+    public class SyntaxWrapperHelperTestsCSharp8 : SyntaxWrapperHelperTestsCSharp7
     {
     }
 }

…rp8/Lightup/WrapperHelperTestsCSharp8.cs …ghtup/SyntaxWrapperHelperTestsCSharp8.csStyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/Lightup/WrapperHelperTestsCSharp8.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/Lightup/SyntaxWrapperHelperTestsCSharp8.cs StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/Lightup/WrapperHelperTestsCSharp8.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp8/Lightup/SyntaxWrapperHelperTestsCSharp8.cs

@@ -5,7 +5,7 @@ namespace StyleCop.Analyzers.Test.CSharp9.Lightup
 {
     using StyleCop.Analyzers.Test.CSharp8.Lightup;
 
-    public class WrapperHelperTestsCSharp9 : WrapperHelperTestsCSharp8
+    public class SyntaxWrapperHelperTestsCSharp9 : SyntaxWrapperHelperTestsCSharp8
     {
     }
 }

…rp9/Lightup/WrapperHelperTestsCSharp9.cs …ghtup/SyntaxWrapperHelperTestsCSharp9.csStyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp9/Lightup/WrapperHelperTestsCSharp9.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp9/Lightup/SyntaxWrapperHelperTestsCSharp9.cs StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp9/Lightup/WrapperHelperTestsCSharp9.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp9/Lightup/SyntaxWrapperHelperTestsCSharp9.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+namespace StyleCop.Analyzers.Test.Lightup
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Reflection;
+    using Microsoft.CodeAnalysis.CSharp;
+    using Microsoft.CodeAnalysis.CSharp.Syntax;
+    using StyleCop.Analyzers.Lightup;
+    using Xunit;
+
+    public class SyntaxWrapperHelperTests
+    {
+        public static IEnumerable<object[]> SyntaxWrapperClasses
+        {
+            get
+            {
+                var wrapperTypes = typeof(ISyntaxWrapper<>).Assembly.GetTypes()
+                    .Where(t => t.GetTypeInfo().ImplementedInterfaces.Any(i => i.IsGenericType && (i.GetGenericTypeDefinition() == typeof(ISyntaxWrapper<>))));
+
+                foreach (var wrapperType in wrapperTypes)
+                {
+                    yield return new object[] { wrapperType };
+                }
+            }
+        }
+
+        [Theory]
+        [MemberData(nameof(SyntaxWrapperClasses))]
+        public void VerifyThatWrapperClassIsPresent(Type wrapperType)
+        {
+            var wrappedTypeName = $"Microsoft.CodeAnalysis.CSharp.Syntax.{wrapperType.Name.Substring(0, wrapperType.Name.Length - "Wrapper".Length)}";
+            if (typeof(CSharpSyntaxNode).Assembly.GetType(wrappedTypeName) is { } expected)
+            {
+                var wrappedType = SyntaxWrapperHelper.GetWrappedType(wrapperType);
+                Assert.Same(expected, wrappedType);
+            }
+            else if (wrapperType == typeof(CommonForEachStatementSyntaxWrapper))
+            {
+                // Special case for C# 6 analysis compatibility
+                Assert.False(LightupHelpers.SupportsCSharp7);
+                Assert.Same(typeof(ForEachStatementSyntax), SyntaxWrapperHelper.GetWrappedType(wrapperType));
+            }
+            else
+            {
+                Assert.Null(SyntaxWrapperHelper.GetWrappedType(wrapperType));
+            }
+        }
+    }
+}