ABAP Class global fiendship and local friendship

[ralfhs]

Ho can I create a class which as a global class as a friend and a local class as friend the same time.

Background:
The class has a private constructor which only can be called from the global friend class.

I want to write a unit test now. For that I also must call the private constructor but from the local test class.

[holm]

Hi Ralf,

in the public section of the global class you can declare the global friend (or in se24 at 1st tab):

CLASS zcl_global DEFINITION PUBLIC
  CREATE PRIVATE
  GLOBAL FRIENDS zcl_friend.
  ...

In the unit test include you can write:

CLASS lcl_test DEFINITION FOR TESTING ...
...
ENDCLASS.

CLASS zcl_global DEFINITION LOCAL FRIENDS lcl_test.

Now the test class can create objects of that class.

BR,
Holm

[Sandra_Rossi]

Syntax error. It should be:

CLASS lcl_test DEFINITION DEFERRED.

CLASS zcl_global DEFINITION
  LOCAL FRIENDS
    lcl_test.

CLASS lcl_test DEFINITION FOR TESTING ...
  ...
ENDCLASS.

[holm]

sorry, cannot see that there is a syntax error if you place the "local friend" definition after the definition of lcl_test.

[Sandra_Rossi]

Okay. It would be a syntax error if there's a reference to ZCL_GLOBAL inside LCL_TEST definition.

It also depends whether CLASS lcl_test IMPLEMENTATION is above or below CLASS zcl_global DEFINITION.

I prefer my proposal because it's always syntax error free.

[holm]

Right 🙂 But i hate these forward declarations...

[ralfhs]

I had to put these declarations into the section: Class-relevant Local Types (Eclipse).

Not it works. Thank you very much.

[Sandra_Rossi]

ralfhs It's not required to have them in the Class-relevant Local Types if you use them only in the Test Classes.

[Sandra_Rossi]

My proposal is also the same as SAP proposal 😉

(see link in answer by Wolfgang)

[wolfgang_woehrle]

Hi,

you can also see here our help content for SAP BTP.

KR

Wolfgang

[ralfhs]

Thanks for that. Finally it's working also now like that.