tests for issue #291 (#1599)
tests for issue #291 (#1599)

* Update FluentMappingTests.cs

tests for issue#291

* Update FluentMappingTests.cs

fix

* Update FluentMappingTests.cs

fix+

* Update FluentMappingTests.cs

fix for LinqSerivce tests

* fix fo CI

* no  more contex!

MaceWindu/linq2db,ronnyek/linq2db,LinqToDB4iSeries/linq2db,MaceWindu/linq2db,linq2db/linq2db,LinqToDB4iSeries/linq2db,linq2db/linq2db