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collatz_conjecture_measurer_test.py
46 lines (37 loc) · 2.2 KB
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collatz_conjecture_measurer_test.py
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import unittest
from collatz_conjecture_measurer import CollatzConjectureMeasurer
class CollatzConjectureMeasurerTest(unittest.TestCase):
def test_get_number_of_iterations_starting_on_1_should_return_0(self):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(1)
self.assertIs(n == 0, True, "Iteration number was: " + str(n))
def test_get_number_of_iterations_starting_on_2_should_return_1(self):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(2)
self.assertIs(n == 1, True, "Iteration number was: " + str(n))
def test_get_number_of_iterations_starting_on_3_should_return_7(self):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(3)
self.assertIs(n == 7, True, "Iteration number was: " + str(n))
def test_get_number_of_iterations_starting_on_4_should_return_2(self):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(4)
self.assertIs(n == 2, True, "Iteration number was: " + str(n))
def test_get_number_of_iterations_starting_on_0_should_raise_value_error_exception(self):
with self.assertRaises(ValueError):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(0)
def test_get_number_of_iterations_starting_on_negative_number_should_raise_value_error_exception(self):
with self.assertRaises(ValueError):
measurer = CollatzConjectureMeasurer()
n = measurer.apply_collatz_conjecture(-1)
def test_get_number_with_longest_iteration_sequence_between_1_and_4_should_return_3(self):
measurer = CollatzConjectureMeasurer()
n = measurer.get_longest_sequence_number_between(1, 4)
self.assertIs(n == 3, True, "Number with longest sequence was: " + str(n))
def test_get_number_with_longest_iteration_sequence_between_1_and_28_should_return_27(self):
measurer = CollatzConjectureMeasurer()
n = measurer.get_longest_sequence_number_between(1, 28)
self.assertIs(n == 27, True, "Number with longest sequence was: " + str(n))
if __name__ == '__main__':
unittest.main()