Don't build test frameworks

Unit tests - in contrast to integration tests - should be data-in-data-out, with all test data being defined on the fly as needed.

cl_abap_testdouble=>configure_call( test_double )->returning( data ).

Don’t start building frameworks that distinguish “test case IDs” to decide what data to provide. The resulting code will be so long and tangled that you won’t be able to keep these tests alive in the long term.

" anti-pattern

test_double->set_test_case( 1 ).

CASE test_case.
  WHEN 1.
  WHEN 2.
ENDCASE.