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abap/README.md
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# Gilded Rose Refactoring Kata in [ABAP](http://scn.sap.com/community/abap/)
## Prerequisite
Access to SAP NetWeaver server with at least ABAP 7.40
## Installation
Assuming you have a proper developer key set up, run SE38
* create a new Module Pool (type M) program as a Local Object
* paste the raw code from [YY_PAO_GILDED_ROSE.abap](https://raw.githubusercontent.com/brehberg/GildedRose-Refactoring-Kata/master/abap/YY_PAO_GILDED_ROSE.abap)
* save (Ctrl-S) and activate (Ctrl-F3) the program
## Running Tests
From the menus choose Program -> Execute -> Unit Tests (Ctrl+Shift+F10)

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abap/YY_PAO_GILDED_ROSE.abap
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*&---------------------------------------------------------------------*
*& Gilded Rose Requirements Specification
*&---------------------------------------------------------------------*
*&
*& Hi and welcome to team Gilded Rose. As you know, we are a small inn with
*& a prime location in a prominent city ran by a friendly innkeeper named
*& Allison. We also buy and sell only the finest goods. Unfortunately, our
*& goods are constantly degrading in quality as they approach their sell by
*& date. We have a system in place that updates our inventory for us. It
*& was developed by a no-nonsense type named Leeroy, who has moved on to
*& new adventures. Your task is to add the new feature to our system so that
*& we can begin selling a new category of items.
*&
*& First an introduction to our system:
*&
*& - All items have a Sell In value which denotes the number of
*& days we have to sell the item
*& - All items have a Quality value which denotes how valuable the item is
*& - At the end of each day our system lowers both values for every item
*&
*& Seems pretty simple, right? Well this is where it gets interesting:
*&
*& - Once the sell by date has passed, Quality degrades twice as fast
*& - The Quality of an item is never negative
*& - "Aged Brie" actually increases in Quality the older it gets
*& - The Quality of an item is never more than 50
*& - "Sulfuras", being a legendary item, never has to be sold or
*& decreases in Quality
*& - "Backstage passes", like aged brie, increases in Quality as its
*& Sell In value approaches; Quality increases by 2 when there
*& are 10 days or less and by 3 when there are 5 days or less
*& but Quality drops to 0 after the concert
*&
*& We have recently signed a supplier of conjured items. This requires an
*& update to our system:
*&
*& - "Conjured" items degrade in Quality twice as fast as normal items
*&
*& Feel free to make any changes to the Update Quality method and add any new
*& code as long as everything still works correctly. However, do not alter
*& the Item class directly or Items table attribute as those belong to the
*& goblin in the corner who will insta-rage and one-shot you as he doesn't
*& believe in shared code ownership (you can make the Update Quality method
*& and Items property static if you must, we'll cover for you).
*&
*& Just for clarification, an item can never have its Quality increase
*& above 50, however "Sulfuras" is a legendary item and as such its Quality
*& is 80 and it never alters.
PROGRAM yy_pao_gilded_rose.
*& Production Code - Class Library
CLASS lcl_item DEFINITION DEFERRED.
CLASS lcl_gilded_rose DEFINITION FINAL.
PUBLIC SECTION.
TYPES:
tt_items TYPE STANDARD TABLE OF REF TO lcl_item WITH EMPTY KEY.
METHODS:
constructor
IMPORTING it_items TYPE tt_items,
update_quality.
PRIVATE SECTION.
DATA:
mt_items TYPE tt_items.
ENDCLASS.
CLASS lcl_item DEFINITION FINAL.
PUBLIC SECTION.
METHODS:
constructor
IMPORTING iv_name TYPE string
iv_sell_in TYPE i
iv_quality TYPE i,
description
RETURNING VALUE(rv_string) TYPE string.
DATA:
mv_name TYPE string,
mv_sell_in TYPE i,
mv_quality TYPE i.
ENDCLASS.
CLASS lcl_gilded_rose IMPLEMENTATION.
METHOD constructor.
mt_items = it_items.
ENDMETHOD.
METHOD update_quality.
LOOP AT mt_items INTO DATA(lo_item).
IF lo_item->mv_name <> |Aged Brie| AND
lo_item->mv_name <> |Backstage passes to a TAFKAL80ETC concert|.
IF lo_item->mv_quality > 0.
IF lo_item->mv_name <> |Sulfuras, Hand of Ragnaros|.
lo_item->mv_quality = lo_item->mv_quality - 1.
ENDIF.
ENDIF.
ELSE.
IF lo_item->mv_quality < 50.
lo_item->mv_quality = lo_item->mv_quality + 1.
IF lo_item->mv_name = |Backstage passes to a TAFKAL80ETC concert|.
IF lo_item->mv_sell_in < 11.
IF lo_item->mv_quality < 50.
lo_item->mv_quality = lo_item->mv_quality + 1.
ENDIF.
ENDIF.
IF lo_item->mv_sell_in < 6.
IF lo_item->mv_quality < 50.
lo_item->mv_quality = lo_item->mv_quality + 1.
ENDIF.
ENDIF.
ENDIF.
ENDIF.
ENDIF.
IF lo_item->mv_name <> |Sulfuras, Hand of Ragnaros|.
lo_item->mv_sell_in = lo_item->mv_sell_in - 1.
ENDIF.
IF lo_item->mv_sell_in < 0.
IF lo_item->mv_name <> |Aged Brie|.
IF lo_item->mv_name <> |Backstage passes to a TAFKAL80ETC concert|.
IF lo_item->mv_quality > 0.
IF lo_item->mv_name <> |Sulfuras, Hand of Ragnaros|.
lo_item->mv_quality = lo_item->mv_quality - 1.
ENDIF.
ENDIF.
ELSE.
lo_item->mv_quality = lo_item->mv_quality - lo_item->mv_quality.
ENDIF.
ELSE.
IF lo_item->mv_quality < 50.
lo_item->mv_quality = lo_item->mv_quality + 1.
ENDIF.
ENDIF.
ENDIF.
ENDLOOP.
ENDMETHOD.
ENDCLASS.
CLASS lcl_item IMPLEMENTATION.
METHOD constructor.
mv_name = iv_name.
mv_sell_in = iv_sell_in.
mv_quality = iv_quality.
ENDMETHOD.
METHOD description.
rv_string = |{ mv_name }, { mv_sell_in }, { mv_quality }|.
ENDMETHOD.
ENDCLASS.
*& Test Code - Executable Text Test Fixture
CLASS lth_texttest_fixture DEFINITION FINAL.
PUBLIC SECTION.
CLASS-METHODS main.
ENDCLASS.
CLASS lth_texttest_fixture IMPLEMENTATION.
METHOD main.
DATA(lo_out) = cl_demo_output=>new( )->write_text( |OMGHAI!| ).
DATA(lt_items) = VALUE lcl_gilded_rose=>tt_items(
( NEW #( iv_name = |+5 Dexterity Vest|
iv_sell_in = 10
iv_quality = 20 ) )
( NEW #( iv_name = |Aged Brie|
iv_sell_in = 2
iv_quality = 0 ) )
( NEW #( iv_name = |Elixir of the Mongoose|
iv_sell_in = 5
iv_quality = 7 ) )
( NEW #( iv_name = |Sulfuras, Hand of Ragnaros|
iv_sell_in = 0
iv_quality = 80 ) )
( NEW #( iv_name = |Backstage passes to a TAFKAL80ETC concert|
iv_sell_in = 15
iv_quality = 20 ) )
( NEW #( iv_name = |Backstage passes to a TAFKAL80ETC concert|
iv_sell_in = 10
iv_quality = 49 ) )
( NEW #( iv_name = |Backstage passes to a TAFKAL80ETC concert|
iv_sell_in = 5
iv_quality = 49 ) )
"This conjured item does not work properly yet
( NEW #( iv_name = |Conjured Mana Cake|
iv_sell_in = 3
iv_quality = 6 ) ) ).
DATA(lo_app) = NEW lcl_gilded_rose( it_items = lt_items ).
DATA(lv_days) = 2.
cl_demo_input=>request( EXPORTING text = |Number of Days?|
CHANGING field = lv_days ).
DO lv_days TIMES.
lo_out->next_section( |-------- day { sy-index } --------| ).
lo_out->write_text( |Name, Sell_In, Quality| ).
LOOP AT lt_items INTO DATA(lo_item).
lo_out->write_text( lo_item->description( ) ).
ENDLOOP.
lo_app->update_quality( ).
ENDDO.
lo_out->display( ).
ENDMETHOD.
ENDCLASS.
*& Test Code - Currently Broken
CLASS ltc_gilded_rose DEFINITION FINAL FOR TESTING RISK LEVEL HARMLESS.
PRIVATE SECTION.
METHODS:
foo FOR TESTING.
ENDCLASS.
CLASS ltc_gilded_rose IMPLEMENTATION.
METHOD foo.
DATA(lt_items) = VALUE lcl_gilded_rose=>tt_items( ( NEW #( iv_name = |foo|
iv_sell_in = 0
iv_quality = 0 ) ) ).
DATA(lo_app) = NEW lcl_gilded_rose( it_items = lt_items ).
lo_app->update_quality( ).
cl_abap_unit_assert=>assert_equals(
act = CAST lcl_item( lt_items[ 1 ] )->mv_name
exp = |fixme| ).
ENDMETHOD.
ENDCLASS.