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https://github.com/donnemartin/interactive-coding-challenges.git
synced 2024-03-22 13:11:13 +08:00
47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
from nose.tools import assert_equal, assert_raises
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class TestKnapsack(object):
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def test_knapsack_bottom_up(self):
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knapsack = Knapsack()
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assert_raises(TypeError, knapsack.fill_knapsack, None, None)
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assert_equal(knapsack.fill_knapsack(0, 0), 0)
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items = []
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items.append(Item(label='a', value=2, weight=2))
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items.append(Item(label='b', value=4, weight=2))
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items.append(Item(label='c', value=6, weight=4))
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items.append(Item(label='d', value=9, weight=5))
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total_weight = 8
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expected_value = 13
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results = knapsack.fill_knapsack(items, total_weight)
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assert_equal(results[0].label, 'd')
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assert_equal(results[1].label, 'b')
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total_value = 0
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for item in results:
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total_value += item.value
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assert_equal(total_value, expected_value)
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print('Success: test_knapsack_bottom_up')
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def test_knapsack_top_down(self):
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knapsack = KnapsackTopDown()
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assert_raises(TypeError, knapsack.fill_knapsack, None, None)
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assert_equal(knapsack.fill_knapsack(0, 0), 0)
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items = []
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items.append(Item(label='a', value=2, weight=2))
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items.append(Item(label='b', value=4, weight=2))
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items.append(Item(label='c', value=6, weight=4))
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items.append(Item(label='d', value=9, weight=5))
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total_weight = 8
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expected_value = 13
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assert_equal(knapsack.fill_knapsack(items, total_weight), expected_value)
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print('Success: test_knapsack_top_down')
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def main():
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test = TestKnapsack()
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test.test_knapsack_bottom_up()
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test.test_knapsack_top_down()
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if __name__ == '__main__':
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main() |