Adds additional generic parameter to exception message

Adds type information for a generic method to the exception output,
making it easier to debug issues where passed arguments may match, but
the generic parameters do not. Fixes #176

Source/Extensions.cs

@@ -81,8 +81,12 @@ public static string Format(this ICallContext invocation)
 				return invocation.Method.DeclaringType.Name + "." +
 					invocation.Method.Name.Substring(4) + " = " + GetValue(invocation.Arguments.First());
 			}
+
+			var genericParameters = invocation.Method.IsGenericMethod
+				? "<" + string.Join(", ", invocation.Method.GetGenericArguments().Select(t => t.Name)) + ">"
+				: "";
 
-			return invocation.Method.DeclaringType.Name + "." + invocation.Method.Name + "(" +
+			return invocation.Method.DeclaringType.Name + "." + invocation.Method.Name + genericParameters + "(" +
 				string.Join(", ", invocation.Arguments.Select(a => GetValue(a)).ToArray()) + ")";
 		}
 

UnitTests/Regressions/IssueReportsFixture.cs

@@ -7,6 +7,7 @@
 using System.Linq.Expressions;
 using System.Reflection;
 using System.Text;
+using System.Text.RegularExpressions;
 using Moq;
 using Moq.Properties;
 using Moq.Protected;
@@ -175,6 +176,35 @@ public void DoTest()
 #endif
 		#endregion
 
+		#region #176
+	    public class Issue176
+	    {
+		    public interface ISomeInterface
+		    {
+			    TResult DoSomething<TResult>(int anInt);
+		    }
+
+		    [Fact]
+		    public void when_a_mock_doesnt_match_generic_parameters_exception_indicates_generic_parameters()
+		    {
+			    var mock = new Mock<ISomeInterface>();
+			    mock.Setup(m => m.DoSomething<int>(0)).Returns(1);
+
+			    try
+			    {
+				    mock.Object.DoSomething<int>(0);
+			    }
+			    catch (MockException exception)
+			    {
+				    var genericTypesRE = new Regex(@"\<.*?\>");
+				    var match = genericTypesRE.Match(exception.Message);
+
+				    Assert.True(match.Success);
+			    }
+		    }
+	    }
+		#endregion // #176
+
 		// Old @ Google Code
 
         #region #47