CLASS ltc_oil_settlement DEFINITION FINAL FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
  PRIVATE SECTION.
    DATA mo_cut TYPE REF TO {{p}}oil_settlement.

    METHODS setup.
    METHODS sums_same_restaurant FOR TESTING.
    METHODS ignores_invalid_records FOR TESTING.
    METHODS normalises_restaurant FOR TESTING.
    METHODS keeps_latest_date FOR TESTING.
    METHODS sorts_result FOR TESTING.
    METHODS find_row
      IMPORTING it_result     TYPE {{p}}oil_settlement=>tt_settlements
                iv_restaurant TYPE {{p}}oil_settlement=>ty_restaurant
      RETURNING VALUE(rs_row) TYPE {{p}}oil_settlement=>ty_settlement.
ENDCLASS.


CLASS ltc_oil_settlement IMPLEMENTATION.
  METHOD setup.
    mo_cut = NEW {{p}}oil_settlement( ).
  ENDMETHOD.

  METHOD sums_same_restaurant.
    DATA(lt_result) = mo_cut->settle( VALUE #(
      ( restaurant = 'R001' collected_on = '20240110' litres = 100 )
      ( restaurant = 'R001' collected_on = '20240115' litres = 50 ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_result ) ).
    DATA(ls_row) = find_row( it_result = lt_result iv_restaurant = 'R001' ).
    cl_abap_unit_assert=>assert_equals( exp = 150 act = ls_row-total_litres ).
    cl_abap_unit_assert=>assert_equals( exp = 2 act = ls_row-round_count ).
  ENDMETHOD.

  METHOD ignores_invalid_records.
    DATA(lt_result) = mo_cut->settle( VALUE #(
      ( restaurant = 'R001' collected_on = '20240110' litres = 0 )
      ( restaurant = space collected_on = '20240110' litres = 20 )
      ( restaurant = 'R002' collected_on = '20240110' litres = 30 ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_result ) ).
    DATA(ls_row) = find_row( it_result = lt_result iv_restaurant = 'R002' ).
    cl_abap_unit_assert=>assert_equals( exp = 30 act = ls_row-total_litres ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = ls_row-round_count ).
  ENDMETHOD.

  METHOD normalises_restaurant.
    DATA(lt_result) = mo_cut->settle( VALUE #(
      ( restaurant = 'r001' collected_on = '20240110' litres = 10 )
      ( restaurant = ' R001 ' collected_on = '20240111' litres = 20 ) ) ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = lines( lt_result ) ).
    DATA(ls_row) = find_row( it_result = lt_result iv_restaurant = 'R001' ).
    cl_abap_unit_assert=>assert_equals( exp = 30 act = ls_row-total_litres ).
    cl_abap_unit_assert=>assert_equals( exp = 'R001' act = ls_row-restaurant ).
  ENDMETHOD.

  METHOD keeps_latest_date.
    DATA(lt_result) = mo_cut->settle( VALUE #(
      ( restaurant = 'R001' collected_on = '20240110' litres = 10 )
      ( restaurant = 'R001' collected_on = '20240305' litres = 10 ) ) ).
    DATA lv_expected TYPE d.
    lv_expected = '20240305'.
    DATA(ls_row) = find_row( it_result = lt_result iv_restaurant = 'R001' ).
    cl_abap_unit_assert=>assert_equals( exp = lv_expected act = ls_row-last_collection ).
  ENDMETHOD.

  METHOD sorts_result.
    DATA(lt_result) = mo_cut->settle( VALUE #(
      ( restaurant = 'R003' collected_on = '20240110' litres = 10 )
      ( restaurant = 'R001' collected_on = '20240110' litres = 10 )
      ( restaurant = 'R002' collected_on = '20240110' litres = 10 ) ) ).
    DATA lv_order TYPE string.
    LOOP AT lt_result INTO DATA(ls_row).
      lv_order = lv_order && ls_row-restaurant+0(4).
    ENDLOOP.
    cl_abap_unit_assert=>assert_equals( exp = 'R001R002R003' act = lv_order ).
  ENDMETHOD.

  METHOD find_row.
    DATA ls_row TYPE {{p}}oil_settlement=>ty_settlement.
    DATA lv_found TYPE abap_bool.
    LOOP AT it_result INTO ls_row WHERE restaurant = iv_restaurant.
      rs_row = ls_row.
      lv_found = abap_true.
      EXIT.
    ENDLOOP.
    cl_abap_unit_assert=>assert_equals( exp = abap_true act = lv_found ).
  ENDMETHOD.
ENDCLASS.