Unit tests not linked to a class

Hello

I want to write a unit test for testing certain content in a database table. E.g.  test that the field SACHX in table T526 only contains the numbers 1 till 7.  I don't have any specific abap class with logic related to table T526.

Is there a way in Abap to write a test class in which I can write some tests to assert the above statement ?

I know I can do this with a work around : I create some class with an empty method, create a test class for this class and write my test logic inside a test method with the same name as my empty method.  This does not feel right though.

Any suggestions are welcome

Koen