CLASS {{p}}t21_hidden DEFINITION PUBLIC FINAL CREATE PUBLIC
  FOR TESTING DURATION SHORT RISK LEVEL HARMLESS.
  PRIVATE SECTION.
    TYPES: BEGIN OF ty_result,
             qty    TYPE decfloat34,
             action TYPE string,
             subrc  TYPE sysubrc,
           END OF ty_result.
    METHODS call
      IMPORTING iv_stock     TYPE decfloat34
                iv_safety    TYPE decfloat34
                iv_lot_size  TYPE decfloat34
                iv_min_order TYPE decfloat34
      RETURNING VALUE(rs_result) TYPE ty_result.
    METHODS exact_multiple_lot FOR TESTING.
    METHODS exact_multiple_single_lot FOR TESTING.
    METHODS exact_multiple_with_minimum FOR TESTING.
    METHODS partial_lot_rounds_up FOR TESTING.
    METHODS stock_above_safety FOR TESTING.
    METHODS stock_equals_safety FOR TESTING.
    METHODS no_lot_size_no_rounding FOR TESTING.
    METHODS minimum_order_applies FOR TESTING.
    METHODS minimum_order_keeps_quantity FOR TESTING.
    METHODS negative_lot_size FOR TESTING.
    METHODS negative_min_order FOR TESTING.
ENDCLASS.


CLASS {{p}}t21_hidden IMPLEMENTATION.
  METHOD call.
    CALL FUNCTION '{{P}}REPL_QTY'
      EXPORTING
        iv_stock     = iv_stock
        iv_safety    = iv_safety
        iv_lot_size  = iv_lot_size
        iv_min_order = iv_min_order
      IMPORTING
        ev_order_qty = rs_result-qty
        ev_action    = rs_result-action
      EXCEPTIONS
        invalid_input = 1
        OTHERS        = 2.
    rs_result-subrc = sy-subrc.
  ENDMETHOD.

  METHOD exact_multiple_lot.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 100 iv_lot_size = 50 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = 0 act = ls_result-subrc ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 100 ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `ORDER` act = ls_result-action ).
  ENDMETHOD.

  METHOD exact_multiple_single_lot.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 50 iv_lot_size = 50 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = 0 act = ls_result-subrc ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 50 ) act = ls_result-qty ).
  ENDMETHOD.

  METHOD exact_multiple_with_minimum.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 100 iv_lot_size = 50 iv_min_order = 120 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 120 ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `ORDER` act = ls_result-action ).
  ENDMETHOD.

  METHOD partial_lot_rounds_up.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 110 iv_lot_size = 50 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 150 ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `ORDER` act = ls_result-action ).
  ENDMETHOD.

  METHOD stock_above_safety.
    DATA(ls_result) = call( iv_stock = 200 iv_safety = 100 iv_lot_size = 50 iv_min_order = 50 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 0 ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `NONE` act = ls_result-action ).
  ENDMETHOD.

  METHOD stock_equals_safety.
    DATA(ls_result) = call( iv_stock = 100 iv_safety = 100 iv_lot_size = 50 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 0 ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `NONE` act = ls_result-action ).
  ENDMETHOD.

  METHOD no_lot_size_no_rounding.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = '37.5' iv_lot_size = 0 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( '37.5' ) act = ls_result-qty ).
    cl_abap_unit_assert=>assert_equals( exp = `ORDER` act = ls_result-action ).
  ENDMETHOD.

  METHOD minimum_order_applies.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 10 iv_lot_size = 0 iv_min_order = 25 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 25 ) act = ls_result-qty ).
  ENDMETHOD.

  METHOD minimum_order_keeps_quantity.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 100 iv_lot_size = 0 iv_min_order = 25 ).
    cl_abap_unit_assert=>assert_equals( exp = CONV decfloat34( 100 ) act = ls_result-qty ).
  ENDMETHOD.

  METHOD negative_lot_size.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 100 iv_lot_size = -1 iv_min_order = 0 ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = ls_result-subrc ).
  ENDMETHOD.

  METHOD negative_min_order.
    DATA(ls_result) = call( iv_stock = 0 iv_safety = 100 iv_lot_size = 0 iv_min_order = -1 ).
    cl_abap_unit_assert=>assert_equals( exp = 1 act = ls_result-subrc ).
  ENDMETHOD.
ENDCLASS.