1 files changed, 24 insertions, 0 deletions
diff --git a/src/OpenID/OpenIdProviderMvc/Code/IFormsAuthentication.cs b/src/OpenID/OpenIdProviderMvc/Code/IFormsAuthentication.cs
new file mode 100644
index 0000000..d4c8a01
--- /dev/null
+++ b/src/OpenID/OpenIdProviderMvc/Code/IFormsAuthentication.cs
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+namespace OpenIdProviderMvc.Code {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Web;
+using System.Web.Security;
+
+	/// <summary>
+	/// An interface that wraps the <see cref="FormsAuthentication"/> type.
+	/// </summary>
+	/// <remarks>
+	/// The FormsAuthentication type is sealed and contains static members, so it is difficult to
+	/// unit test code that calls its members. The interface and helper class below demonstrate
+	/// how to create an abstract wrapper around such a type in order to make the AccountController
+	/// code unit testable.
+	/// </remarks>
+	public interface IFormsAuthentication {
+		string SignedInUsername { get; }
+
+		void SignIn(string userName, bool createPersistentCookie);
+
+		void SignOut();
+	}
+}