Address comment and add tests

Author: fredericDelaporte

src/NHibernate.Test/Criteria/Lambda/QueryOverFixture.cs

@@ -1,13 +1,8 @@
 using System;
-using System.Collections;
-
 using NUnit.Framework;
-
 using NHibernate.Criterion;
 using NHibernate.SqlCommand;
 using NHibernate.Transform;
-using NHibernate.Type;
-using NHibernate.Util;
 
 namespace NHibernate.Test.Criteria.Lambda
 {
@@ -928,6 +923,48 @@ public void Readonly()
 			AssertCriteriaAreEqual(expected, actual);
 		}
 
+		[Test]
+		public void SetTimeout()
+		{
+			var expected =
+				CreateTestCriteria(typeof(Person))
+					.SetTimeout(3);
+
+			var actual =
+				CreateTestQueryOver<Person>()
+					.SetTimeout(3);
+
+			AssertCriteriaAreEqual(expected, actual);
+		}
+
+		[Test]
+		public void SetFetchSize()
+		{
+			var expected =
+				CreateTestCriteria(typeof(Person))
+					.SetFetchSize(3);
+
+			var actual =
+				CreateTestQueryOver<Person>()
+					.SetFetchSize(3);
+
+			AssertCriteriaAreEqual(expected, actual);
+		}
+
+		[Test]
+		public void SetComment()
+		{
+			var expected =
+				CreateTestCriteria(typeof(Person))
+					.SetComment("blah");
+
+			var actual =
+				CreateTestQueryOver<Person>()
+					.SetComment("blah");
+
+			AssertCriteriaAreEqual(expected, actual);
+		}
+
 		[Test]
 		public void DetachedQueryOver()
 		{

src/NHibernate/QueryOverExtensions.cs

@@ -9,7 +9,7 @@ public static class QueryOverExtensions
 		/// <param name="queryOver">The query on which to set the timeout.</param>
 		/// <param name="timeout">The timeout in seconds.</param>
 		/// <returns><see langword="this" /> (for method chaining).</returns>
-		public static IQueryOver<TRoot> SetTimeout<TRoot>(this IQueryOver<TRoot> queryOver, int timeout)
+		public static TQueryOver SetTimeout<TQueryOver>(this TQueryOver queryOver, int timeout) where TQueryOver: IQueryOver
 		{
 			queryOver.RootCriteria.SetTimeout(timeout);
 			return queryOver;
@@ -21,7 +21,7 @@ public static IQueryOver<TRoot> SetTimeout<TRoot>(this IQueryOver<TRoot> queryOv
 		/// <param name="queryOver">The query on which to set the timeout.</param>
 		/// <param name="fetchSize">The fetch size.</param>
 		/// <returns><see langword="this" /> (for method chaining).</returns>
-		public static IQueryOver<TRoot> SetFetchSize<TRoot>(this IQueryOver<TRoot> queryOver, int fetchSize)
+		public static TQueryOver SetFetchSize<TQueryOver>(this TQueryOver queryOver, int fetchSize) where TQueryOver: IQueryOver
 		{
 			queryOver.RootCriteria.SetFetchSize(fetchSize);
 			return queryOver;
@@ -33,7 +33,7 @@ public static IQueryOver<TRoot> SetFetchSize<TRoot>(this IQueryOver<TRoot> query
 		/// <param name="queryOver">The query on which to set the timeout.</param>
 		/// <param name="comment">A human-readable string.</param>
 		/// <returns><see langword="this" /> (for method chaining).</returns>
-		public static IQueryOver<TRoot> SetComment<TRoot>(this IQueryOver<TRoot> queryOver, string comment)
+		public static TQueryOver SetComment<TQueryOver>(this TQueryOver queryOver, string comment) where TQueryOver: IQueryOver
 		{
 			queryOver.RootCriteria.SetComment(comment);
 			return queryOver;