1 files changed, 2 insertions, 2 deletions
diff --git a/src/DotNetOpenAuth.Test/OpenId/Extensions/ExtensionTestUtilities.cs b/src/DotNetOpenAuth.Test/OpenId/Extensions/ExtensionTestUtilities.cs
index 0f40bc3..4a78fc1 100644
--- a/src/DotNetOpenAuth.Test/OpenId/Extensions/ExtensionTestUtilities.cs
+++ b/src/DotNetOpenAuth.Test/OpenId/Extensions/ExtensionTestUtilities.cs
@@ -37,7 +37,7 @@ namespace DotNetOpenAuth.Test.OpenId.Extensions {
 			var securitySettings = new ProviderSecuritySettings();
 			var cryptoKeyStore = new MemoryCryptoKeyStore();
 			var associationStore = new ProviderAssociationHandleEncoder(cryptoKeyStore);
-			Association association = HmacShaAssociation.Create(protocol, protocol.Args.SignatureAlgorithm.Best, AssociationRelyingPartyType.Smart, associationStore, securitySettings);
+			Association association = HmacShaAssociationProvider.Create(protocol, protocol.Args.SignatureAlgorithm.Best, AssociationRelyingPartyType.Smart, associationStore, securitySettings);
 			var coordinator = new OpenIdCoordinator(
 				rp => {
 					RegisterExtension(rp.Channel, Mocks.MockOpenIdExtension.Factory);
@@ -77,7 +77,7 @@ namespace DotNetOpenAuth.Test.OpenId.Extensions {
 		}
 
 		internal static void RegisterExtension(Channel channel, StandardOpenIdExtensionFactory.CreateDelegate extensionFactory) {
-			Contract.Requires<ArgumentNullException>(channel != null);
+			Requires.NotNull(channel, "channel");
 
 			var factory = (OpenIdExtensionFactoryAggregator)channel.BindingElements.OfType<ExtensionsBindingElement>().Single().ExtensionFactory;
 			factory.Factories.OfType<StandardOpenIdExtensionFactory>().Single().RegisterExtension(extensionFactory);