create ruby test cases

ruby/gilded_rose_tests.rb

@@ -1,12 +1,222 @@
 require File.join(File.dirname(__FILE__), 'gilded_rose')
 require 'test/unit'
 
-class TestUntitled < Test::Unit::TestCase
+class GildedRoseTest < Test::Unit::TestCase
 
-  def test_foo
+  def test_update_plus_5_dexterity_vest_once
-    items = [Item.new("foo", 0, 0)]
+    items = [Item.new(name="+5 Dexterity Vest", sell_in=10, quality=20)]
     GildedRose.new(items).update_quality()
-    assert_equal items[0].name, "fixme"
+    assert_equal items[0].sell_in, 9
+    assert_equal items[0].quality, 19
   end
 
+  def test_update_plus_5_dexterity_vest_twice
+    items = [Item.new(name="+5 Dexterity Vest", sell_in=10, quality=20)]
+    2.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 8
+    assert_equal items[0].quality, 18
+  end
+
+  def test_update_plus_5_dexterity_vest_thrice
+    items = [Item.new(name="+5 Dexterity Vest", sell_in=10, quality=20)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 7
+    assert_equal items[0].quality, 17
+  end
+
+  def test_update_plus_5_dexterity_vest_four_times
+    items = [Item.new(name="+5 Dexterity Vest", sell_in=10, quality=20)]
+    4.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 6
+    assert_equal items[0].quality, 16
+  end
+
+  def test_update_aged_brie_once
+    items = [Item.new(name="Aged Brie", sell_in=2, quality=0)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 1
+    assert_equal items[0].quality, 1
+  end
+
+  def test_update_aged_brie_twice
+    items = [Item.new(name="Aged Brie", sell_in=2, quality=0)]
+    2.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 0
+    assert_equal items[0].quality, 2
+  end
+
+  def test_update_aged_brie_thrice
+    items = [Item.new(name="Aged Brie", sell_in=2, quality=0)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 4
+  end
+
+  def test_update_aged_brie_four_times
+    items = [Item.new(name="Aged Brie", sell_in=2, quality=0)]
+    4.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -2
+    assert_equal items[0].quality, 6
+  end
+
+  def test_elixir_of_the_mongoose_once
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 4
+    assert_equal items[0].quality, 6
+  end
+
+  def test_elixir_of_the_mongoose_twice
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    2.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 3
+    assert_equal items[0].quality, 5
+  end
+
+  def test_elixir_of_the_mongoose_thrice
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 2
+    assert_equal items[0].quality, 4
+  end
+
+  def test_elixir_of_the_mongoose_four_times
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    4.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 1
+    assert_equal items[0].quality, 3
+  end
+
+  def test_elixir_of_the_mongoose_six_times
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 0
+  end
+
+  def test_elixir_of_the_mongoose_seven_times
+    items = [Item.new(name="Elixir of the Mongoose", sell_in=5, quality=7)]
+    7.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -2
+    assert_equal items[0].quality, 0
+  end
+
+  def test_sulfuras_hand_of_ragnaros_once
+    items = [Item.new(name="Sulfuras, Hand of Ragnaros", sell_in=0, quality=80)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 0
+    assert_equal items[0].quality, 80
+  end
+
+  def test_sulfuras_hand_of_ragnaros_twice
+    items = [Item.new(name="Sulfuras, Hand of Ragnaros", sell_in=0, quality=80)]
+    2.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 0
+    assert_equal items[0].quality, 80
+  end
+
+  def test_sulfuras_hand_of_ragnaros_thrice
+    items = [Item.new(name="Sulfuras, Hand of Ragnaros", sell_in=-1, quality=80)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 80
+  end
+
+  def test_sulfuras_hand_of_ragnaros_six_times
+    items = [Item.new(name="Sulfuras, Hand of Ragnaros", sell_in=-1, quality=80)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 80
+  end
+
+  def test_backstage_passes_to_concert_once
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=15, quality=20)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 14
+    assert_equal items[0].quality, 21
+  end
+
+  def test_backstage_passes_to_concert_thrice
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=15, quality=20)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 12
+    assert_equal items[0].quality, 23
+  end
+
+  def test_backstage_passes_to_concert_six_times
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=15, quality=20)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 9
+    assert_equal items[0].quality, 27
+  end
+
+  def test_backstage_passes_to_concert_lower_sellin_once
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=10, quality=49)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 9
+    assert_equal items[0].quality, 50
+  end
+
+  def test_backstage_passes_to_concert_lower_sell_in_thrice
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=10, quality=40)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 7
+    assert_equal items[0].quality, 46
+  end
+
+  def test_backstage_passes_to_concert_lower_sell_in_six_times
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=10, quality=49)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 4
+    assert_equal items[0].quality, 50
+  end
+
+  def test_backstage_passes_to_concert_lowest_sellin_once
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=5, quality=49)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 4
+    assert_equal items[0].quality, 50
+  end
+
+  def test_backstage_passes_to_concert_lowest_sell_in_thrice
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=5, quality=40)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 2
+    assert_equal items[0].quality, 49
+  end
+
+  def test_backstage_passes_to_concert_lowest_sell_in_six_times
+    items = [Item.new(name="Backstage passes to a TAFKAL80ETC concert", sell_in=5, quality=49)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 0
+  end
+
+  def test_conjure_once
+    items = [Item.new(name="Conjured Mana Cake", sell_in=3, quality=6)]
+    GildedRose.new(items).update_quality()
+    assert_equal items[0].sell_in, 2
+    assert_equal items[0].quality, 5
+  end
+
+  def test_conjure_thrice
+    items = [Item.new(name="Conjured Mana Cake", sell_in=3, quality=6)]
+    3.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, 0
+    assert_equal items[0].quality, 3
+  end
+
+  def test_conjure_four_times
+    items = [Item.new(name="Conjured Mana Cake", sell_in=3, quality=6)]
+    4.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -1
+    assert_equal items[0].quality, 1
+  end
+
+  def test_conjure_six_times
+    items = [Item.new(name="Conjured Mana Cake", sell_in=3, quality=6)]
+    6.times { GildedRose.new(items).update_quality() }
+    assert_equal items[0].sell_in, -3
+    assert_equal items[0].quality, 0
+  end
 end