CLASS {{p}}t31_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 lesson_with_instructor FOR TESTING.
    METHODS lesson_without_instructor FOR TESTING.
ENDCLASS.


CLASS {{p}}t31_test IMPLEMENTATION.

  METHOD class_setup.
    go_env = cl_cds_test_environment=>create( i_for_entity = '{{P}}I_LESSON_INSTR' ).
  ENDMETHOD.

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

  METHOD setup.
    DATA lt_instr TYPE STANDARD TABLE OF {{p}}instr WITH EMPTY KEY.
    DATA lt_lesson TYPE STANDARD TABLE OF {{p}}lesson WITH EMPTY KEY.
    go_env->clear_doubles( ).
    lt_instr = VALUE #( ( instr_id = 'A' full_name = 'CARA' city = 'KOELN' ) ).
    lt_lesson = VALUE #( ( lesson_id = 'X1' instr_id = 'A' lesson_date = '20240201'
                           duration = 45 fee = '40.00' )
                         ( lesson_id = 'X2' instr_id = 'A' lesson_date = '20240202'
                           duration = 20 fee = '20.00' )
                         ( lesson_id = 'X3' instr_id = 'Z' lesson_date = '20240203'
                           duration = 60 fee = '30.00' ) ).
    go_env->insert_test_data( lt_instr ).
    go_env->insert_test_data( lt_lesson ).
  ENDMETHOD.

  METHOD lesson_with_instructor.
    SELECT SINGLE lesson_id, instructor_name, instructor_city
      FROM {{p}}i_lesson_instr
      WHERE lesson_id = 'X1' INTO @DATA(ls_result).
    cl_abap_unit_assert=>assert_equals( exp = 'X1' act = ls_result-lesson_id ).
    cl_abap_unit_assert=>assert_equals( exp = 'CARA' act = ls_result-instructor_name ).
    cl_abap_unit_assert=>assert_equals( exp = 'KOELN' act = ls_result-instructor_city ).
  ENDMETHOD.

  METHOD lesson_without_instructor.
    SELECT SINGLE lesson_id, instructor_name
      FROM {{p}}i_lesson_instr
      WHERE lesson_id = 'X3' INTO @DATA(ls_result).
    cl_abap_unit_assert=>assert_equals( exp = 'X3' act = ls_result-lesson_id ).
    cl_abap_unit_assert=>assert_initial( act = ls_result-instructor_name ).
  ENDMETHOD.

ENDCLASS.