46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Napisz funkcję sum_from_one_to_n zwracającą sume liczb od 1 do n.
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Jeśli podany argument jest mniejszy od 1 powinna być zwracana wartość 0.
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"""
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def sum_from_one_to_n(n):
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suma=0
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if n > 0:
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for i in range(1,n+1):
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suma += i
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return suma
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def sum_from_one_to_n(n):
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def test_special_cases(self):
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"""Testy przypadków szczególnych."""
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self.assertEqual(sum_from_one_to_n(-100), 0)
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self.assertEqual(sum_from_one_to_n(-1), 0)
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self.assertEqual(sum_from_one_to_n(0), 0)
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self.assertEqual(sum_from_one_to_n(1), 1)
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self.assertEqual(sum_from_one_to_n(2), 5)
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def test_regular(self):
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"""Testy dla kilku liczb"""
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self.assertEqual(sum_from_one_to_n(3), 14)
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self.assertEqual(sum_from_one_to_n(4), 385)
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def tests(f):
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inputs = [[999], [-100]]
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outputs = [499500, 0]
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for input, output in zip(inputs, outputs):
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if f(*input) != output:
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return "ERROR: {}!={}".format(f(*input), output)
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break
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return "TESTS PASSED"
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if __name__ == "__main__":
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print(tests(sum_from_one_to_n))
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