Added unit tests with different possibilities

python/test_gilded_rose.py

@@ -5,11 +5,69 @@ from gilded_rose import Item, GildedRose
 
 
 class GildedRoseTest(unittest.TestCase):
-    def test_foo(self):
-        items = [Item("foo", 0, 0)]
-        gilded_rose = GildedRose(items)
+    def test_normal_item_quality(self):
+        item = Item(name="foo", sell_in=5, quality=5)
+        gilded_rose = GildedRose([item])
         gilded_rose.update_quality()
-        self.assertEqual("fixme", items[0].name)
+        self.assertEqual(4, item.quality)
+
+    def test_normal_item_quality_when_quality_is_zero(self):
+        item = Item(name="foo", sell_in=0, quality=0)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+
+        # Quality should never go below 0
+        self.assertEqual(0, item.quality)
+
+    def test_aged_brie_quality_exceeded(self):
+        item = Item(name="Aged Brie", sell_in=0, quality=50)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+
+        # Quality should never exceed fifty
+        self.assertEqual(50, item.quality)
+
+    def test_aged_brie_sell_in(self):
+        item = Item(name="Aged Brie", sell_in=10, quality=2)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+        self.assertEquals(9, item.sell_in)
+
+    def test_sulfuras_sell_in_and_quality(self):
+        item = Item(name="Sulfuras, Hand of Ragnaros", sell_in=10, quality=2)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+
+        # For sulfuras, sell in and quality both remains same
+        self.assertEquals(10, item.sell_in)
+        self.assertEquals(2, item.quality)
+
+    def test_backstage_quality_for_less_than_ten_days(self):
+        item = Item(name="Backstage passes to a TAFKAL80ETC concert", sell_in=9, quality=2)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+        self.assertEquals(8, item.sell_in)
+
+        # For backstage, quality increase by 2 when sell_in <=10, and > 5
+        self.assertEquals(4, item.quality)
+
+    def test_backstage_quality_for_less_than_five_days(self):
+        item = Item(name="Backstage passes to a TAFKAL80ETC concert", sell_in=5, quality=2)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+        self.assertEquals(4, item.sell_in)
+
+        # For backstage, quality increase by 3 when sell_in <=5, and > 0
+        self.assertEquals(5, item.quality)
+
+    def test_backstage_quality_when_concert_is_over(self):
+        item = Item(name="Backstage passes to a TAFKAL80ETC concert", sell_in=0, quality=2)
+        gilded_rose = GildedRose([item])
+        gilded_rose.update_quality()
+        self.assertEquals(-1, item.sell_in)
+
+        # For backstage, quality gets to 0 when concert is over that is sell_in <= 0
+        self.assertEquals(0, item.quality)
 
         
 if __name__ == '__main__':