--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UnitTests/Linq/ProviderSpecific/Firebird.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,50 @@
+using System;
+using System.Linq;
+
+using BLToolkit.Data.DataProvider;
+using BLToolkit.Data.Linq;
+
+using NUnit.Framework;
+
+using UnitTests.Linq.Interface.Model;
+
+namespace Data.Linq.ProviderSpecific
+{
+	[TestFixture, Category("Firebird")]
+	public class Firebird : TestBase
+	{
+		[Test]
+		public void SequenceInsert([IncludeDataContexts(ProviderName.Firebird)] string context)
+		{
+			using (var db = new TestDbManager(context))
+			{
+				db.GetTable<FirebirdSpecific.SequenceTest>().Where(_ => _.Value == "SeqValue").Delete();
+				db.Insert(new FirebirdSpecific.SequenceTest { Value = "SeqValue" });
+
+				var id = db.GetTable<FirebirdSpecific.SequenceTest>().Single(_ => _.Value == "SeqValue").ID;
+
+				db.GetTable<FirebirdSpecific.SequenceTest>().Where(_ => _.ID == id).Delete();
+
+				Assert.AreEqual(0, db.GetTable<FirebirdSpecific.SequenceTest>().Count(_ => _.Value == "SeqValue"));
+			}
+		}
+
+		[Test]
+		public void SequenceInsertWithIdentity([IncludeDataContexts(ProviderName.Firebird)] string context)
+		{
+			using (var db = new TestDbManager(context))
+			{
+				db.GetTable<FirebirdSpecific.SequenceTest>().Where(_ => _.Value == "SeqValue").Delete();
+
+				var id1 = Convert.ToInt32(db.InsertWithIdentity(new FirebirdSpecific.SequenceTest { Value = "SeqValue" }));
+				var id2 = db.GetTable<FirebirdSpecific.SequenceTest>().Single(_ => _.Value == "SeqValue").ID;
+
+				Assert.AreEqual(id1, id2);
+
+				db.GetTable<FirebirdSpecific.SequenceTest>().Where(_ => _.ID == id1).Delete();
+
+				Assert.AreEqual(0, db.GetTable<FirebirdSpecific.SequenceTest>().Count(_ => _.Value == "SeqValue"));
+			}
+		}
+	}
+}