CLASS {{p}}t41_test 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 customer_is_joined FOR TESTING.
    METHODS order_without_cust FOR TESTING.
    METHODS class_boundary FOR TESTING.
ENDCLASS.


CLASS {{p}}t41_test IMPLEMENTATION.
  METHOD class_setup.
    go_env = cl_cds_test_environment=>create( i_for_entity = '{{P}}I_SO_CUST' ).
  ENDMETHOD.

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

  METHOD setup.
    DATA lt_so TYPE STANDARD TABLE OF {{p}}so WITH EMPTY KEY.
    DATA lt_cust TYPE STANDARD TABLE OF {{p}}cust WITH EMPTY KEY.
    go_env->clear_doubles( ).
    lt_cust = VALUE #(
      ( customer_id = 'C1' name = 'Alpha Corp' country = 'DE' ) ).
    lt_so = VALUE #(
      ( order_id = 'O1' customer_id = 'C1'
        order_date = '20240101' net_amount = '100.00' )
      ( order_id = 'O9' customer_id = 'C9'
        order_date = '20240109' net_amount = '900.00' ) ).
    go_env->insert_test_data( lt_cust ).
    go_env->insert_test_data( lt_so ).
  ENDMETHOD.

  METHOD customer_is_joined.
    SELECT SINGLE customer_name, country FROM {{p}}i_so_cust
      WHERE order_id = 'O1' INTO @DATA(ls_row).
    cl_abap_unit_assert=>assert_equals( exp = 'Alpha Corp' act = ls_row-customer_name ).
    cl_abap_unit_assert=>assert_equals( exp = 'DE' act = ls_row-country ).
  ENDMETHOD.

  METHOD order_without_cust.
    SELECT COUNT(*) FROM {{p}}i_so_cust
      WHERE order_id = 'O9' INTO @DATA(lv_count).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lv_count ).
  ENDMETHOD.

  METHOD class_boundary.
    SELECT SINGLE amount_class FROM {{p}}i_so_cust
      WHERE order_id = 'O1' INTO @DATA(lv_class).
    cl_abap_unit_assert=>assert_equals( exp = 'M' act = lv_class ).
  ENDMETHOD.
ENDCLASS.