public void Deny_Unrestricted ()
		{
			ToolboxDataAttribute tda = new ToolboxDataAttribute (null);
			Assert.IsNull (tda.Data, "Data");
			Assert.IsTrue (tda.Equals (tda), "Equals");
			Assert.IsFalse (tda.GetHashCode () == ToolboxDataAttribute.Default.GetHashCode (), "GetHashCode");
			// unexpected result as tda hash code is different from default
			// seems that null and String.Empty are both considered defaults...
			Assert.IsTrue (tda.IsDefaultAttribute (), "IsDefaultAttribute");
		}
		public void HashcodeTest ()
		{
			string foo_built = new StringBuilder ("f").Append ("oo").ToString ();
			ToolboxDataAttribute left = new ToolboxDataAttribute ("foo");
			ToolboxDataAttribute right = new ToolboxDataAttribute (foo_built);

			Assert.AreEqual (left.GetHashCode (), right.GetHashCode (), "Hash identity");

			left = new ToolboxDataAttribute (null);
			right = new ToolboxDataAttribute (null);

			Assert.AreEqual (left.GetHashCode (), right.GetHashCode (), "Hash identity (with null)");
		}