Fixed and add minitest

ruby/gilded_rose_tests.rb

@@ -1,12 +1,68 @@
-require File.join(File.dirname(__FILE__), 'gilded_rose')
-require 'test/unit'
+require 'minitest/autorun'
+require_relative 'gilded_rose'
 
-class TestUntitled < Test::Unit::TestCase
-
-  def test_foo
-    items = [Item.new("foo", 0, 0)]
-    GildedRose.new(items).update_quality()
-    assert_equal items[0].name, "fixme"
+class TestGildedRose < Minitest::Test
+  def test_update_quality_regular_item
+    item = Item.new('Regular Item', 5, 10)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 9, item.quality
+    assert_equal 4, item.sell_in
   end
 
+  def test_update_quality_negative_sell_in_regular_item
+    item = Item.new('Regular Item', 0, 10)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 8, item.quality
+  end
+
+  def test_update_quality_aged_brie
+    item = Item.new('Aged Brie', 5, 10)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 11, item.quality
+  end
+
+  def test_update_quality_max_quality_aged_brie
+    item = Item.new('Aged Brie', 5, 50)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 50, item.quality
+  end
+
+  def test_update_quality_backstage_passes_approaching
+    item = Item.new('Backstage passes to a TAFKAL80ETC concert', 11, 20)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 21, item.quality
+  end
+
+  def test_update_quality_backstage_passes_sell_in_10_or_less
+    item = Item.new('Backstage passes to a TAFKAL80ETC concert', 10, 20)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 22, item.quality
+  end
+
+  def test_update_quality_backstage_passes_sell_in_5_or_less
+    item = Item.new('Backstage passes to a TAFKAL80ETC concert', 5, 20)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 23, item.quality
+  end
+
+  def test_update_quality_backstage_passes_after_concert
+    item = Item.new('Backstage passes to a TAFKAL80ETC concert', 0, 20)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 0, item.quality
+  end
+
+  def test_update_quality_sulfuras
+    item = Item.new('Sulfuras, Hand of Ragnaros', 5, 80)
+    gilded_rose = GildedRose.new([item])
+    gilded_rose.update_quality
+    assert_equal 80, item.quality
+  end
 end