NH-3025 - Add tests

Author: hazzik

src/NHibernate.Test/Linq/ByMethod/GroupByHavingTests.cs

@@ -91,7 +91,7 @@ where g.Count() > 4
 			Assert.That(list.Single().Count, Is.EqualTo(5));
 		}
 
-		[Test, Description("I suspect that this case isn't executed correctly - the sql doesn't mention the orderlines. /Oskar 2012-01-22")]
+		[Test, KnownBug("NH-????"), Description("I suspect that this case isn't executed correctly - the sql doesn't mention the orderlines. /Oskar 2012-01-22")]
 		public void HavingCountSelectTupleKeyCountOfOrderLines()
 		{
 			var list = (from o in db.Orders
@@ -105,7 +105,7 @@ where g.Count() > 4
 								   }).ToList();
 
 			Assert.That(list.Count, Is.EqualTo(1));
-			Assert.That(list.Single().Count, Is.EqualTo(5));
+			Assert.That(list.Single().Count, Is.EqualTo(14));
 		}
 
 		[Test]

src/NHibernate.Test/Linq/ByMethod/GroupByTests.cs

@@ -143,12 +143,9 @@ public void SingleKeyPropertyGroupAndOrderByCountBeforeProjection()
 			AssertOrderedBy.Descending(orderCounts, oc => oc.OrderCount);
 		}
 
-		[Test]
-		[Ignore("Generates incorrect SQL. Reported as NH-3027.")]
+		[Test, KnownBug("NH-3027")]
 		public void SingleKeyPropertyGroupByEntityAndSelectEntity()
 		{
-			// NH-3027
-
 			var orderCounts = db.Orders
 				.GroupBy(o => o.Customer)
 				.Select(g => new { Customer = g.Key, OrderCount = g.Count() })
@@ -224,6 +221,31 @@ public void GroupByWithContainsInWhereClause()
 			Assert.That(result.Count, Is.EqualTo(62));
 		}
 
+		[Test, KnownBug("NH-3025")]
+		public void SelectTupleKeyCountOfOrderLines()
+		{
+			var list = (from o in db.Orders.ToList()
+						group o by o.OrderDate
+						into g
+						select new
+								   {
+									   g.Key,
+									   Count = g.SelectMany(x => x.OrderLines).Count()
+								   }).ToList();
+
+			var query = (from o in db.Orders
+						group o by o.OrderDate
+						into g
+						select new
+								   {
+									   g.Key,
+									   Count = g.SelectMany(x => x.OrderLines).Count()
+								   }).ToList();
+
+			Assert.That(query.Count, Is.EqualTo(481));
+			Assert.That(query, Is.EquivalentTo(list));
+		}
+
 		[Test]
 		public void GroupByTwoFieldsWhereOneOfThemIsTooDeep()
 		{
@@ -265,8 +287,7 @@ into g
 			Assert.That(results.Count, Is.EqualTo(10));
 		}
 
-		[Test]
-		[Ignore("Generates incorrect expression.")]
+		[Test, KnownBug("NH-????")]
 		public void GroupByAndAll()
 		{
 			//NH-2566