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https://github.com/emilybache/GildedRose-Refactoring-Kata.git
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92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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"""Characterization tests pinning the existing Gilded Rose behaviour.
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Written BEFORE refactoring so we can change the implementation freely while
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guaranteeing observable behaviour stays identical. Conjured coverage is added
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in a later commit once the new rule is implemented.
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"""
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import unittest
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from gilded_rose import Item, GildedRose
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BACKSTAGE = "Backstage passes to a TAFKAL80ETC concert"
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SULFURAS = "Sulfuras, Hand of Ragnaros"
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def update(name, sell_in, quality):
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item = Item(name, sell_in, quality)
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GildedRose([item]).update_quality()
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return item
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class NormalItemTest(unittest.TestCase):
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def test_quality_and_sell_in_drop_by_one(self):
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item = update("foo", 10, 20)
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self.assertEqual(item.sell_in, 9)
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self.assertEqual(item.quality, 19)
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def test_quality_drops_twice_as_fast_after_sell_by(self):
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item = update("foo", 0, 20)
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self.assertEqual(item.quality, 18)
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def test_quality_never_negative(self):
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item = update("foo", 5, 0)
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self.assertEqual(item.quality, 0)
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class AgedBrieTest(unittest.TestCase):
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def test_increases_in_quality(self):
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item = update("Aged Brie", 5, 20)
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self.assertEqual(item.quality, 21)
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def test_increases_twice_as_fast_after_sell_by(self):
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item = update("Aged Brie", -1, 20)
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self.assertEqual(item.quality, 22)
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def test_quality_capped_at_50(self):
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item = update("Aged Brie", 5, 50)
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self.assertEqual(item.quality, 50)
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class SulfurasTest(unittest.TestCase):
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def test_never_changes(self):
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item = update(SULFURAS, 0, 80)
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self.assertEqual(item.sell_in, 0)
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self.assertEqual(item.quality, 80)
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class BackstagePassTest(unittest.TestCase):
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def test_increases_by_one_when_far_out(self):
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item = update(BACKSTAGE, 15, 20)
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self.assertEqual(item.quality, 21)
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def test_increases_by_two_within_ten_days(self):
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item = update(BACKSTAGE, 10, 20)
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self.assertEqual(item.quality, 22)
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def test_increases_by_three_within_five_days(self):
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item = update(BACKSTAGE, 5, 20)
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self.assertEqual(item.quality, 23)
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def test_drops_to_zero_after_concert(self):
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item = update(BACKSTAGE, 0, 20)
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self.assertEqual(item.quality, 0)
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def test_quality_capped_at_50(self):
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item = update(BACKSTAGE, 5, 49)
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self.assertEqual(item.quality, 50)
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class ConjuredItemTest(unittest.TestCase):
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def test_degrades_twice_as_fast_as_normal(self):
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item = update("Conjured Mana Cake", 5, 20)
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self.assertEqual(item.quality, 18)
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def test_degrades_four_per_day_after_sell_by(self):
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item = update("Conjured Mana Cake", 0, 20)
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self.assertEqual(item.quality, 16)
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def test_quality_never_negative(self):
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item = update("Conjured Mana Cake", 5, 1)
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self.assertEqual(item.quality, 0)
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if __name__ == "__main__":
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unittest.main() |