Clean up your unit tests - introducing zcl_abap_unit_wrapper

[former_member566586]

Today I decided to show you how having a common base class for your unit tests might help you save some time and improve the readability of your tests.

The class I use simply wraps all non-deprecated methods from cl_abap_unit_assert. This means they keep the exact same signatures and just pass them on like this:

METHOD assert_equals.

    assertion_failed = cl_abap_unit_assert=>assert_equals(

      act = act

      exp = exp

      tol = tol

      level = level

      msg = msg

      quit = quit

      ignore_hash_sequence = ignore_hash_sequence ).

ENDMETHOD.

Let's try to apply it to the test class used in my previous unit testing blog. A diff is worth a thousand words:



You can refactor existing test classes in two steps:

1. Add inheritance.


2. Use find/replace to get rid of cl_abap_unit_assert=> everywhere at once.

You can download the class from my blog's git repository.

If you want to, you can take it and add your own often-used custom assert methods to have them accessible across your codebase.

Another advantage is easier testing of legacy code - you might not have certain assertion methods available on older releases, but you can pretend you do by replacing the cl_abap_unit_assert call in the base class with your downported version.

 

As always, hope this helps!

Frederik