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https://github.com/emilybache/GildedRose-Refactoring-Kata.git
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Delete erlang directory
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Matt Decker
GitHub
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erlang/.gitignore
vendored
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erlang/.gitignore
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.rebar3
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_*
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.eunit
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*.o
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*.beam
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*.plt
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*.swp
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*.swo
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.erlang.cookie
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ebin
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log
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erl_crash.dump
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.rebar
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logs
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_build
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*.iml
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rebar3.crashdump
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*~
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.idea
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GildedRose
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=====
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You will need to install [erlang](https://www.erlang.org/), and [rebar3](https://github.com/erlang/rebar3). I recommend following the instructions from JetBrains: [Getting Started with Erlang](https://www.jetbrains.com/help/idea/erlang.html).
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When you open this project with IntelliJ I recommend that you do
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File | New | Project from existing sources
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Then be sure to select "Erlang" as the project type, and configure the rebar3 location correctly,
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(There is a copy of it in this repo).
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If you're having trouble executing the 'main' application, check your module path in your Project Settings.
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I found I had to manually set the module compile output path to '_build/default/lib/gilded_rose/ebin'.
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The test output path seemed to be correct as '.eunit'
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Build
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-----
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$ rebar3 compile
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Run Tests
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---------
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$ rebar3 eunit
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TextTest Fixture
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----------------
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To run for 30 days, I think this ought to work but I tend to run it through the IDE instead:
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$ erl -pa _build/default/lib/gilded_rose/ebin -pa . -eval main:main([30]). -s init stop -noshell
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-record(item, {
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name :: binary(),
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sell_in = 0 :: integer(),
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quality = 0 :: integer()
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}).
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-include("gilded_rose.hrl").
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{erl_opts, [warnings_as_errors]}.
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{eunit_opts, [verbose]}.
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[].
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{application, gilded_rose, [{vsn, "0.1"}]}.
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-module(gilded_rose).
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-include("gilded_rose.hrl").
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-export([
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update_quality/1
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]).
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-spec update_quality([#item{}]) -> [#item{}].
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update_quality(Items) ->
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lists:map(fun update_item/1, Items).
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-spec update_item(#item{}) -> #item{}.
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update_item(Item = #item{name = Name}) ->
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Item1 = if
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Name /= "Aged Brie" andalso Name /= "Backstage passes to a TAFKAL80ETC concert" ->
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if
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Item#item.quality > 0 ->
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if
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Name /= "Sulfuras, Hand of Ragnaros" ->
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Item#item{quality = Item#item.quality - 1};
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true ->
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Item
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end;
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true ->
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Item
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end;
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true ->
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if
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Item#item.quality < 50 ->
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Item2 = Item#item{quality = Item#item.quality + 1},
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if
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Name == "Backstage passes to a TAFKAL80ETC concert" ->
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Item3 = if
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Item2#item.sell_in < 11 ->
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if
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Item2#item.quality < 50 ->
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Item2#item{quality = Item2#item.quality + 1};
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true -> Item2
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end;
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true -> Item2
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end,
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if
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Item3#item.sell_in < 6 ->
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if
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Item3#item.quality < 50 ->
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Item3#item{quality = Item3#item.quality + 1};
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true -> Item3
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end;
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true -> Item3
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end;
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true -> Item2
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end;
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true -> Item
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end
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end,
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Item4 = if
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Name /= "Sulfuras, Hand of Ragnaros" ->
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Item1#item{sell_in = Item1#item.sell_in - 1};
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true -> Item1
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end,
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if
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Item4#item.sell_in < 0 ->
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if
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Name /= "Aged Brie" ->
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if
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Name /= "Backstage passes to a TAFKAL80ETC concert" ->
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if
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Item4#item.quality > 0 ->
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if
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Name /= "Sulfuras, Hand of Ragnaros" ->
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Item4#item{quality = Item4#item.quality - 1};
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true -> Item4
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end;
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true -> Item4
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end;
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true -> Item4#item{quality = Item4#item.quality - Item4#item.quality}
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end;
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true ->
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if
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Item4#item.quality < 50 ->
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Item4#item{quality = Item4#item.quality + 1};
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true -> Item4
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end
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end;
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true -> Item4
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end.
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-module(main).
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-include("texttest_fixture.hrl").
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-export([main/1]).
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-define(ALL_ITEMS, [
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#item{name = "+5 Dexterity Vest", sell_in = 10, quality = 20},
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#item{name = "Aged Brie", sell_in = 2, quality = 0},
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#item{name = "Elixir of the Mongoose", sell_in = 5, quality = 7},
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#item{name = "Sulfuras, Hand of Ragnaros", sell_in = 0, quality = 80},
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#item{name = "Sulfuras, Hand of Ragnaros", sell_in = -1, quality = 80},
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#item{name = "Backstage passes to a TAFKAL80ETC concert", sell_in = 15, quality = 20},
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#item{name = "Backstage passes to a TAFKAL80ETC concert", sell_in = 10, quality = 49},
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#item{name = "Backstage passes to a TAFKAL80ETC concert", sell_in = 5, quality = 49},
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#item{name = "Conjured Mana Cake", sell_in = 3, quality = 6}
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]).
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main([Days]) ->
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try
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texttest_fixture:print_update_quality(Days, ?ALL_ITEMS)
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catch
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ExceptionClass:ExceptionInfo ->
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io:format("something went wrong:~n~p : ~p~n", [ExceptionClass, ExceptionInfo]),
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usage()
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end;
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main(_) ->
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usage().
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usage() ->
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io:format("usage: main main number_of_days\ne.g. main main [30]\n"),
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halt(1).
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-module(texttest_fixture).
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-include("texttest_fixture.hrl").
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-export([print_update_quality/2]).
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print_one_day(Day, Items) ->
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io:format("~n-------- day ~p --------~n", [Day]),
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io:format("name, sellIn, quality~n", []),
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lists:foreach(fun(#item{name = Name, sell_in = SellIn, quality = Quality}) ->
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io:format("~s, ~p, ~p~n", [Name, SellIn, Quality])
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end, Items).
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print_update_quality(Days, Items) ->
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io:format("OMGHAI!"),
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lists:foreach(
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fun(Day) -> print_one_day(Day, Items),
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gilded_rose:update_quality(Items)
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end, lists:seq(0, Days - 1)
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).
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-module(gilded_rose_test).
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-include_lib("eunit/include/eunit.hrl").
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-include("gilded_rose.hrl").
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update_quality_test_() -> [
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{"foo", ?_assertMatch([#item{name= "Foo"}], gilded_rose:update_quality([#item{name = "Foo", sell_in = 0, quality = 0}]))}
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].
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