Added missing test cases for existing items

python/tests/test_gilded_rose.py

@@ -1,16 +1,108 @@
-# -*- coding: utf-8 -*-
 import unittest
-
-from gilded_rose import Item, GildedRose
+from gilded_rose import GildedRose, Item
 
 
 class GildedRoseTest(unittest.TestCase):
-    def test_foo(self):
-        items = [Item("foo", 0, 0)]
-        gilded_rose = GildedRose(items)
-        gilded_rose.update_quality()
-        self.assertEqual("foo", items[0].name)
 
+
+    def updater(obj = GildedRose, times = 1):
+        for i in range(times):
+            obj.update_quality()
+
+    def test_normal_item(self):
+        # Set up the item
+        item = Item("+5 Dexterity Vest", 10, 20)
+        gilded_rose = GildedRose([item])
+
+        # One day after
+        gilded_rose.update_quality()
+        self.assertEqual(item.sell_in, 9)
+        self.assertEqual(item.quality, 19)
         
+        # Sell by date passed
+        GildedRoseTest.updater(gilded_rose, item.sell_in + 1)
+        self.assertEqual(item.sell_in, -1)
+
+        # Quality degrades twice as fast now
+        self.assertEqual(item.quality, 8)
+        GildedRoseTest.updater(gilded_rose, 10)
+        self.assertEqual(item.sell_in, -11)
+        # never be less than 0
+        self.assertEqual(item.quality, 0)  
+
+    def test_aged_brie(self):
+        # Set up the item
+        item = Item("Aged Brie", 10, 20)
+        gilded_rose = GildedRose([item])
+        
+        # One day after
+        gilded_rose.update_quality()
+        self.assertEqual(item.sell_in, 9)
+        self.assertEqual(item.quality, 21)
+
+        # Sell by date passed
+        GildedRoseTest.updater(gilded_rose, item.sell_in + 1)
+        self.assertEqual(item.sell_in, -1)
+
+        # Quality increases twice as fast now
+        self.assertEqual(item.quality, 32)
+        GildedRoseTest.updater(gilded_rose, 10)
+        self.assertEqual(item.sell_in, -11)
+        self.assertEqual(item.quality, 50) 
+
+    def test_sulfuras(self):
+        # Set up the item
+        item = Item("Sulfuras, Hand of Ragnaros", 20, 80)
+        gilded_rose = GildedRose([item])
+
+        # One day after
+        gilded_rose.update_quality()
+        self.assertNotEqual(item.sell_in, 19)
+        self.assertEqual(item.sell_in, 20)
+        self.assertEqual(item.quality, 80)
+        
+        # sell by date passed
+        GildedRoseTest.updater(gilded_rose, item.sell_in + 1)
+        self.assertEqual(item.sell_in, 20)
+        self.assertNotEqual(item.sell_in, -1)
+
+    def test_backstage_passes(self):
+        # Set up the item
+        item = Item("Backstage passes to a TAFKAL80ETC concert", 20, 20)
+        gilded_rose = GildedRose([item])
+
+        # One day after
+        gilded_rose.update_quality()
+        self.assertEqual(item.sell_in, 19)
+        self.assertEqual(item.quality, 21)
+        GildedRoseTest.updater(gilded_rose, 9)
+
+        # Sell in 10 or less
+        self.assertEqual(item.sell_in, 10)
+        self.assertEqual(item.quality, 30)
+        GildedRoseTest.updater(gilded_rose)
+        self.assertEqual(item.sell_in, 9)
+        self.assertEqual(item.quality, 32)
+
+        # Sell in 5 or less
+        GildedRoseTest.updater(gilded_rose, 4)
+        self.assertEqual(item.sell_in, 5)
+        self.assertEqual(item.quality, 40)
+        GildedRoseTest.updater(gilded_rose)
+        self.assertEqual(item.sell_in, 4)
+        self.assertEqual(item.quality, 43)
+        GildedRoseTest.updater(gilded_rose, 2)
+        self.assertEqual(item.sell_in, 2)
+        self.assertEqual(item.quality, 49)
+
+        # Never gets beyond 50 and drops to 0 once sell in passed
+        GildedRoseTest.updater(gilded_rose)
+        self.assertEqual(item.sell_in, 1)
+        self.assertEqual(item.quality, 50)
+
+        GildedRoseTest.updater(gilded_rose, 2)
+        self.assertEqual(item.sell_in, -1)
+        self.assertEqual(item.quality, 0)
+
 if __name__ == '__main__':
     unittest.main()