Test case for select expanded query

Author: bahusoid

src/NHibernate.Test/Async/Linq/ConstantTest.cs

@@ -270,5 +270,26 @@ public async Task PlansWithNonParameterizedConstantsAreNotCachedAsync()
 				Has.Count.EqualTo(0),
 				"Query plan should not be cached.");
 		}
+
+		[Test]
+		public async Task PlansWithNonParameterizedConstantsAreNotCachedForExpandedQueryAsync()
+		{
+			var queryPlanCacheType = typeof(QueryPlanCache);
+
+			var cache = (SoftLimitMRUCache)
+				queryPlanCacheType
+					.GetField("planCache", BindingFlags.Instance | BindingFlags.NonPublic)
+					.GetValue(Sfi.QueryPlanCache);
+			cache.Clear();
+
+			var ids = new[] {"ANATR", "UNKNOWN"}.ToList();
+			await (db.Customers.Where(x => ids.Contains(x.CustomerId)).Select(
+				c => new {c.CustomerId, c.ContactName, Constant = 1}).FirstAsync());
+			
+			Assert.That(
+				cache,
+				Has.Count.EqualTo(0),
+				"Query plan should not be cached.");
+		}
 	}
 }

src/NHibernate.Test/Linq/ConstantTest.cs

@@ -313,5 +313,26 @@ public void PlansWithNonParameterizedConstantsAreNotCached()
 				Has.Count.EqualTo(0),
 				"Query plan should not be cached.");
 		}
+
+		[Test]
+		public void PlansWithNonParameterizedConstantsAreNotCachedForExpandedQuery()
+		{
+			var queryPlanCacheType = typeof(QueryPlanCache);
+
+			var cache = (SoftLimitMRUCache)
+				queryPlanCacheType
+					.GetField("planCache", BindingFlags.Instance | BindingFlags.NonPublic)
+					.GetValue(Sfi.QueryPlanCache);
+			cache.Clear();
+
+			var ids = new[] {"ANATR", "UNKNOWN"}.ToList();
+			db.Customers.Where(x => ids.Contains(x.CustomerId)).Select(
+				c => new {c.CustomerId, c.ContactName, Constant = 1}).First();
+
+			Assert.That(
+				cache,
+				Has.Count.EqualTo(0),
+				"Query plan should not be cached.");
+		}
 	}
 }