Unit tests do not pass in the copied class.

[netsrak-dev]

Description / Steps to Reproduce

I have copied the class 'ZCL_AW_PART_VALUE' to 'ZCL_AW_PART_VALUE_USERID'.
I modified the method 'VALUE_FILL_STRUCTURE' (to make a test method fail):

METHOD ZIF_AW_PART_VALUE~VALUE_FILL_STRUCTURE.
  DATA: lv_country LIKE i_country.

  IF i_country = 'US'.
    lv_country = 'DE'.
  ELSE.
    lv_country = i_country.
  ENDIF.

  r_result = VALUE #(
    name      = i_name
    street    = i_street
    post_code = i_post_code
    city      = i_city
    country   = lv_country ).

ENDMETHOD.

In the local test class, the following is assigned:

DATA cut TYPE REF TO ZCL_AW_PART_VALUE_USERID.

Then, the unit test is executed in the class 'ZCL_AW_PART_VALUE_USERID'.

Expected Behavior

The test 'STRUCTURE' should trigger a Critical Assertion Error: 'Structure: ASSERT_EQUALS'.

Actual Behavior

All tests pass.

Assumption

I suspect the problem lies here: link to the problematic code.