cl_cds_test_environment for nested CDS views

[Benedikt3]

i try to mock I_BillingDocument for tests,
but this works only for selects on I_BillingDocumentBasic and not at the root.

Can anyone tell me how to make select work based on I_BillingDocument? We are on HANA 2021.

 go_cds = cl_cds_test_environment=>create(  i_for_entity      = 'I_BillingDocument' "
                                                I_select_base_dependencies = abap_true ) .
     go_cds->enable_double_redirection( ).
    
     " mock data
     DATA: vbrk_t       TYPE STANDARD TABLE OF vbrk WITH EMPTY KEY.
     vbrk_t = VALUE #( ( vbeln = '1234567890'  ) ).
     go_cds->insert_test_data(  vbrk_t  ).
    
    
     " select - dosen't work
     SELECT billingdocument
        FROM I_BillingDocument
        INTO TABLE @DATA(itest1) UP TO 10 ROWS.
    
     " works
     SELECT billingdocument
        FROM I_BillingDocumentBasic
        INTO TABLE @DATA(itest2) UP TO 10 ROWS.

[alex_frank · Accepted solution]

The CDS Test Double Framework doubles the dependent on entities, not the entity itself. It's intended to test the CDS view itself, as you can see in the help: https://help.sap.com/docs/abap-cloud/abap-development-tools-user-guide/abap-cds-test-double-framewor...

If you want to double a certain CDS view directly, and not its dependencies, you can use the OSQL Test Double Framework. Something like:

DATA billing_docs TYPE STANDARD TABLE OF I_BillingDocument WITH EMPTY KEY.
billing_docs = VALUE #( ( BillingDocument  = '1234567890'  ) ).
DATA(osql_env) = cl_osql_test_environment=>create( VALUE #( ( 'I_BillingDocument' ) ) ).
osql_env->insert_test_data( billing_docs ).