--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UnitTests/CS/Data/NullableParameter.cs	Thu Mar 27 21:46:09 2014 +0400
@@ -0,0 +1,50 @@
+using System;
+using System.Data;
+
+using NUnit.Framework;
+
+using BLToolkit.Data;
+using BLToolkit.Mapping;
+
+namespace Data
+{
+	[TestFixture]
+	public class NullableParameter
+	{
+		public class NullableInt
+		{
+			[NullValue(-1)]
+			public int I;
+			public int II;
+		}
+
+		[Test]
+		public void Test()
+		{
+			const int testValue = 0;
+
+			NullableInt ni = new NullableInt();
+
+			ni.I  = testValue;
+			ni.II = testValue;
+			
+			using (DbManager db = new DbManager())
+			{
+				IDbDataParameter[] ps = db.CreateParameters(ni);
+
+				foreach (IDbDataParameter p in ps)
+				{
+					switch (p.ParameterName)
+					{
+						case "@I":
+							Assert.AreEqual(testValue, p.Value);
+							break;
+						case "@II":
+							Assert.AreEqual(testValue, p.Value);
+							break;
+					}
+				}
+			}
+		}
+	}
+}