IEnhancedUserType from string to bool fails in some circumstances

[pasqualedante]

I have a custom mapping type that transform a string (N or S) from database to a bool on the entity side.
This custom mapping type works fine in NH 5.2.x. After the migration to NH 5.3.x the custom mapping type works well except in one scenario: when the query check the inverse value of one variable, as show under:

var no = false;
Assert.IsTrue(_database.GetSession().Query<Entity1>().Where(x => x.IsChiusa == !no).Any());

I attach here a unit test to show the issue in action.

Thanks,
Pasquale.

issue_in_action.zip

[fredericDelaporte]

Fixed by #2705.