CLASS {{p}}t20_hidden DEFINITION PUBLIC FINAL CREATE PUBLIC
  FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
  PRIVATE SECTION.
    CLASS-DATA go_env TYPE REF TO if_cds_test_environment.
    CLASS-METHODS class_setup.
    CLASS-METHODS class_teardown.
    METHODS setup.
    METHODS association_path FOR TESTING.
    METHODS closed_order_hidden FOR TESTING.
    METHODS customer_data_shown FOR TESTING.
    METHODS open_orders_only FOR TESTING.
    METHODS order_key_data FOR TESTING.
    METHODS order_without_customer FOR TESTING.
ENDCLASS.


CLASS {{p}}t20_hidden IMPLEMENTATION.
  METHOD class_setup.
    go_env = cl_cds_test_environment=>create( i_for_entity = '{{P}}I_ORDER' ).
  ENDMETHOD.

  METHOD class_teardown.
    go_env->destroy( ).
  ENDMETHOD.

  METHOD setup.
    DATA lt_cust TYPE STANDARD TABLE OF {{p}}cust WITH EMPTY KEY.
    DATA lt_ord  TYPE STANDARD TABLE OF {{p}}ord WITH EMPTY KEY.
    go_env->clear_doubles( ).
    lt_cust = VALUE #(
      ( cust_id = 'C001' cust_name = 'Alpha GmbH' country = 'DE' )
      ( cust_id = 'C002' cust_name = 'Beta Ltd'   country = 'GB' ) ).
    lt_ord = VALUE #(
      ( order_id = 'O100' cust_id = 'C001' order_date = '20250110' status = 'O' )
      ( order_id = 'O101' cust_id = 'C002' order_date = '20250111' status = 'O' )
      ( order_id = 'O102' cust_id = 'C999' order_date = '20250112' status = 'O' )
      ( order_id = 'O103' cust_id = 'C001' order_date = '20250113' status = 'C' ) ).
    go_env->insert_test_data( lt_cust ).
    go_env->insert_test_data( lt_ord ).
  ENDMETHOD.

  METHOD open_orders_only.
    SELECT COUNT(*) FROM {{p}}i_order INTO @DATA(lv_count).
    cl_abap_unit_assert=>assert_equals( exp = 3 act = lv_count ).
  ENDMETHOD.

  METHOD closed_order_hidden.
    SELECT SINGLE order_id FROM {{p}}i_order
      WHERE order_id = 'O103' INTO @DATA(lv_id).
    cl_abap_unit_assert=>assert_initial( act = lv_id ).
  ENDMETHOD.

  METHOD order_key_data.
    SELECT SINGLE cust_id, order_date FROM {{p}}i_order
      WHERE order_id = 'O100' INTO @DATA(ls_ord).
    cl_abap_unit_assert=>assert_equals( exp = 'C001' act = ls_ord-cust_id ).
    cl_abap_unit_assert=>assert_equals( exp = CONV d( '20250110' ) act = ls_ord-order_date ).
  ENDMETHOD.

  METHOD customer_data_shown.
    SELECT SINGLE customer_name, country FROM {{p}}i_order
      WHERE order_id = 'O101' INTO @DATA(ls_ord).
    cl_abap_unit_assert=>assert_equals( exp = 'Beta Ltd' act = ls_ord-customer_name ).
    cl_abap_unit_assert=>assert_equals( exp = 'GB' act = ls_ord-country ).
  ENDMETHOD.

  METHOD order_without_customer.
    SELECT SINGLE customer_name, country FROM {{p}}i_order
      WHERE order_id = 'O102' INTO @DATA(ls_ord).
    cl_abap_unit_assert=>assert_initial( act = ls_ord-customer_name ).
    cl_abap_unit_assert=>assert_initial( act = ls_ord-country ).
  ENDMETHOD.

  METHOD association_path.
    SELECT SINGLE \_customer-cust_name FROM {{p}}i_order
      WHERE order_id = 'O100' INTO @DATA(lv_name).
    cl_abap_unit_assert=>assert_equals( exp = 'Alpha GmbH' act = lv_name ).
  ENDMETHOD.
ENDCLASS.