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https://github.com/emilybache/GildedRose-Refactoring-Kata.git
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64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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import sys
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import unittest
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from pathlib import Path
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_EXERCISE_ROOT = Path(__file__).resolve().parent.parent
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if str(_EXERCISE_ROOT) not in sys.path:
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sys.path.insert(0, str(_EXERCISE_ROOT))
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from gilded_rose import Item, GildedRose, NormalStrategy
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class GildedRoseTest(unittest.TestCase):
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def test_normal_item_at_zero_quality_stays_zero(self):
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items = [Item("foo", 0, 0)]
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gilded_rose = GildedRose(items)
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gilded_rose.update_quality()
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self.assertEqual(0, items[0].quality)
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class TestNormalStrategy(unittest.TestCase):
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"""Tests for NormalStrategy — default degradation behaviour."""
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def setUp(self):
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self.strategy = NormalStrategy()
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def test_quality_decrements_by_one_each_day(self):
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item = Item("widget", sell_in=10, quality=20)
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self.strategy.update(item, days=1)
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self.assertEqual(19, item.quality)
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self.assertEqual(9, item.sell_in)
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def test_quality_floors_at_zero(self):
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# Quality must never go negative
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item = Item("widget", sell_in=5, quality=0)
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self.strategy.update(item, days=1)
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self.assertEqual(0, item.quality)
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def test_quality_degrades_twice_after_sell_date(self):
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# Once sell_in goes below 0, each day removes 2 quality
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item = Item("widget", sell_in=0, quality=10)
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self.strategy.update(item, days=1)
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self.assertEqual(8, item.quality)
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self.assertEqual(-1, item.sell_in)
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def test_multi_day_crosses_sell_date(self):
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# Days=5 from sell_in=2, quality=10
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# Day1: q=9 si=1 | Day2: q=8 si=0 | Day3: q=6 si=-1
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# Day4: q=4 si=-2 | Day5: q=2 si=-3
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item = Item("widget", sell_in=2, quality=10)
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self.strategy.update(item, days=5)
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self.assertEqual(2, item.quality)
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self.assertEqual(-3, item.sell_in)
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def test_quality_floors_at_zero_when_crossing_sell_date(self):
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# sell_in=1, quality=1: Day1 q=0 si=0 | Day2 post-sell but already 0
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item = Item("widget", sell_in=1, quality=1)
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self.strategy.update(item, days=2)
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self.assertEqual(0, item.quality)
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if __name__ == '__main__':
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unittest.main()
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