Added showcase unit test for [Any] Attribute

This attribute, just like [Random] is not supported yet by VS Test
Runner, but Mighty Moose and NUnit GUI Runner handle it just fine.

TddToolkit/ImplementationDetails/TypeResolution/CachedGeneration.cs

@@ -27,7 +27,7 @@ public object GetReturnTypeFor(IInvocation invocation)
       if (!_cache.AlreadyContainsValueFor(cacheKey))
       {
         var returnType = invocation.Method.ReturnType;
-        var returnValue = AnyReturnValue.Of(returnType).Generate();
+        var returnValue = Any.Instance(returnType);
         _cache.Add(cacheKey, returnValue);
       }
 

TddToolkitSpecification/AnyAttributeSpecification.cs

@@ -0,0 +1,43 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using TddEbook.TddToolkit;
+using TddEbook.TddToolkit.NUnitExtensions;
+
+namespace TddToolkitSpecification
+{
+  public class AnyAttributeSpecification
+  {
+    [Test]
+    public void ShouldAllowPassingDifferentObjectsAndPrimitivesThroughParameters
+    (
+      [Any] int anInt,
+      [Any] int anInt2, 
+      [Any] string aString, 
+      [Any] AnySpecification.ISimple interfaceImplementation,
+      [Any] IEnumerable<int> anEnumerable, 
+      [Any] List<string> concreteList,
+      [Any] IEnumerable<AnySpecification.ISimple> interfaceImplementationList,
+      [Any] ProperValueType value
+    )
+    {
+      XAssert.NotEqual(default(int), anInt);
+      XAssert.NotEqual(anInt2, anInt);
+      Assert.False(string.IsNullOrEmpty(aString));
+      Assert.NotNull(interfaceImplementation);
+      Assert.Greater(anEnumerable.Count(), 0);
+      Assert.Greater(concreteList.Count(), 0);
+      Assert.Greater(concreteList.Count(), 0);
+
+      Assert.Greater(interfaceImplementationList.Count(), 0);
+      Assert.NotNull(interfaceImplementationList.ToArray()[0]);
+      Assert.NotNull(interfaceImplementationList.ToArray()[1]);
+      Assert.NotNull(interfaceImplementationList.ToArray()[2]);
+
+      Assert.NotNull(value);
+    }
+
+  }
+}

TddToolkitSpecification/TddToolkitSpecification.csproj

@@ -36,6 +36,7 @@
     <Reference Include="System" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="AnyAttributeSpecification.cs" />
     <Compile Include="CircularListSpecification.cs" />
     <Compile Include="ConstraintsViolationsSpecification.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />