NH-4004 - test filtering adjustments according to review.

Author: fredericDelaporte

src/NHibernate.Test/NHSpecificTest/NH1521/Fixture.cs

@@ -11,8 +11,8 @@ public class Fixture
 	{
 		private static void CheckDialect(Configuration configuration)
 		{
-			var dialect = configuration.Properties[Environment.Dialect];
-			if (!dialect.Contains("MsSql") || dialect.Contains("MsSqlCe"))
+			var dialect = Dialect.Dialect.GetDialect(configuration.Properties);
+			if (!(dialect is MsSql2000Dialect))
 				Assert.Ignore("Specific test for MsSQL dialects");
 		}
 

src/NHibernate.Test/NHSpecificTest/NH1635/Fixture.cs

@@ -1,5 +1,4 @@
 using System.Text;
-using NHibernate.Dialect;
 using NHibernate.Tool.hbm2ddl;
 using NUnit.Framework;
 
@@ -10,7 +9,7 @@ public class Fixture : BugTestCase
 	{
 		protected override bool AppliesTo(Dialect.Dialect dialect)
 		{
-			return !(dialect is MsSqlCeDialect);
+			return TestDialect.SupportsSubqueryInSelectClause;
 		}
 
 		private void CreateTestContext()

src/NHibernate.Test/NHSpecificTest/NH1925/Fixture.cs

@@ -1,5 +1,4 @@
 using System.Collections;
-using NHibernate.Dialect;
 using NUnit.Framework;
 
 namespace NHibernate.Test.NHSpecificTest.NH1925
@@ -9,8 +8,7 @@ public class Fixture : BugTestCase
 	{
 		protected override bool AppliesTo(Dialect.Dialect dialect)
 		{
-			// SqlServer CE does not support subquery in where clause
-			return !(dialect is MsSqlCeDialect);
+			return TestDialect.SupportsNakedSubqueryInWhereClause;
 		}
 
 		private const string NAME_JOE = "Joe";