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""" |
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:mod:`tests.unit.test_digital` -- Unit Tests |
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============================================ |
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.. module:: tests.unit.test_digital |
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:synopsis: Unit tests for the lib.digital module. |
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.. moduleauthor:: Bill Maroney <[email protected]> |
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""" |
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from typing import List, Union |
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import pytest |
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class TestDigitsOf(object): |
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""" A collection of positive and negative unit tests for the :func:`lib.digital.digits_of` function """ |
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@classmethod |
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def get_import(cls): |
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""" Get and return the :func:`lib.digital.digits_of` function |
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.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
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:return: the :func:`lib.digital.digits_of` function |
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""" |
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from lib.digital import digits_of |
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return digits_of |
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@pytest.mark.parametrize("n,base,expected_answer", [(10, 10, [1, 0]), (1579, 10, [1, 5, 7, 9]), (7, 2, [1, 1, 1]), |
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(10, 2, [1, 0, 1, 0]), (0, 9, [0])]) |
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def test_digits_of_correctness(self, n: int, base: int, expected_answer: int): |
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""" Test the correctness of :func:`lib.digital.digits_of` using known answer tests |
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:param n: the input integer |
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:param base: the base to build digits in |
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:param expected_answer: the expected answer |
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:raises AssertionError: if :func:`lib.digital.digits_of` returns the wrong type |
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:raises AssertionError: if :func:`lib.digital.digits_of` returns the wrong value |
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""" |
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digits_of = self.get_import() |
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computed_answer = digits_of(n, base=base) |
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# assert isinstance(computed_answer, digits_of.__annotations__["return"]), "wrong type" |
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assert computed_answer == expected_answer, "wrong answer" |
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def test_digits_of_bad_n_type_str(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) """ |
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digits_of = self.get_import() |
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with pytest.raises(TypeError): |
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digits_of("123") |
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def test_digits_of_bad_n_type_float(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``TypeError`` for a non-``int`` value for `n` (``float``) |
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""" |
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digits_of = self.get_import() |
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with pytest.raises(TypeError): |
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digits_of(123.0) |
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def test_digits_of_bad_n_negative(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``ValueError`` for a negative value for `n` """ |
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digits_of = self.get_import() |
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with pytest.raises(ValueError): |
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digits_of(-123) |
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def test_digits_of_bad_base_type_str(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``TypeError`` for a non-``int`` value for `base` (``str``) |
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""" |
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digits_of = self.get_import() |
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with pytest.raises(TypeError): |
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digits_of(123, base="2") |
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def test_digits_of_bad_base_type_float(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``TypeError`` for a non-``int`` value for `base` |
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(``float``) |
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""" |
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digits_of = self.get_import() |
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with pytest.raises(TypeError): |
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digits_of(123, base=2.0) |
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def test_digits_of_bad_base_negative(self): |
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""" Test that :func:`lib.digital.digits_of` raises a ``ValueError`` for a negative value for `base` """ |
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digits_of = self.get_import() |
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with pytest.raises(ValueError): |
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digits_of(123, base=-2) |
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class TestDigitsToNum(object): |
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""" A collection of positive and negative unit tests for the :func:`lib.digital.digits_to_num` function """ |
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@classmethod |
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def get_import(cls): |
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""" Get and return the :func:`lib.digital.digits_to_sum` function |
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.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
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:return: the :func:`lib.digital.digits_to_num` function |
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""" |
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from lib.digital import digits_to_num |
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return digits_to_num |
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@pytest.mark.parametrize("digits,base,expected_answer", [([1, 2, 3], 10, 123), ([3, 2, 1], 10, 321), ([7], 10, 7), |
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([1, 0, 1, 0], 2, 10), ([1, 1, 1], 2, 7)]) |
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def test_digits_to_num_correctness(self, digits: List[int], base: int, expected_answer: int): |
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""" Test the correctness of :func:`lib.digital.digits_to_num` using known answer tests |
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:param digits: the input digits |
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:param base: the base to build digits in |
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:param expected_answer: the expected answer |
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:raises AssertionError: if :func:`lib.digital.digits_to_num` returns the wrong type |
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:raises AssertionError: if :func:`lib.digital.digits_to_num` returns the wrong value |
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""" |
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digits_to_num = self.get_import() |
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computed_answer = digits_to_num(digits, base=base) |
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assert isinstance(computed_answer, digits_to_num.__annotations__["return"]), "wrong type" |
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assert computed_answer == expected_answer, "wrong answer" |
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def test_digits_to_num_bad_digits_type_str(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a non-``list`` value for `digits` |
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(``str``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num("123") |
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def test_digits_to_num_bad_digits_type_float(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a non-``list`` value for `digits` |
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(``float``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num(123.0) |
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def test_digits_to_num_bad_digits_type_list_of_str(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a list of non-``int`` values for |
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`digits` (list of ``str``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num(["123"]) |
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def test_digits_to_num_bad_digits_type_list_of_float(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a list of non-``int`` values for |
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`digits` (list of ``float``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num([123.0]) |
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def test_digits_to_num_bad_digits_negative_element(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``ValueError`` for a negative value in `digits` |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(ValueError): |
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digits_to_num([-1, 2, 3]) |
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def test_digits_to_num_bad_base_type_str(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a non-``int`` value for `base` |
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(``str``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num([1, 2, 3], base="2") |
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def test_digits_to_num_bad_base_type_float(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``TypeError`` for a non-``int`` value for `base` |
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(``float``) |
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""" |
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digits_to_num = self.get_import() |
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with pytest.raises(TypeError): |
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digits_to_num([1, 2, 3], base=2.0) |
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def test_digits_to_num_bad_base_negative(self): |
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""" Test that :func:`lib.digital.digits_to_num` raises a ``ValueError`` for a negative value for `base` """ |
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digits_to_num = self.get_import() |
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with pytest.raises(ValueError): |
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digits_to_num(123, base=-2) |
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class TestDigitSum(object): |
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""" A collection of positive and negative unit tests for the :func:`lib.digital.digit_sum` function """ |
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@classmethod |
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def get_import(cls): |
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""" Get and return the :func:`lib.digital.digit_sum` function |
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.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
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:return: the :func:`lib.digital.digit_sum` function |
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""" |
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from lib.digital import digit_sum |
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return digit_sum |
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@pytest.mark.parametrize("value,expected_answer", [(0, 0), (9, 9), (11, 2), (123, 6), (654321, 21)]) |
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def test_digit_sum_correctness(self, value: int, expected_answer: int): |
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""" Test the correctness of :func:`lib.digital.digit_sum` using known answer tests |
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:param value: the input value |
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:param expected_answer: the expected answer |
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:raises AssertionError: if :func:`lib.digital.digit_sum` returns the wrong type |
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:raises AssertionError: if :func:`lib.digital.digit_sum` returns the wrong value |
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""" |
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digit_sum = self.get_import() |
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computed_answer = digit_sum(value) |
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assert isinstance(computed_answer, digit_sum.__annotations__["return"]), "wrong type" |
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assert computed_answer == expected_answer, "wrong answer" |
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def test_digit_sum_bad_n_type_str(self): |
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""" Test that :func:`lib.digital.digit_sum` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) """ |
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211
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digit_sum = self.get_import() |
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with pytest.raises(TypeError): |
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digit_sum("123") |
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215
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def test_digit_sum_bad_n_type_float(self): |
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""" Test that :func:`lib.digital.digit_sum` raises a ``TypeError`` for a non-``int`` value for `n` (``float``) |
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217
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""" |
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digit_sum = self.get_import() |
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with pytest.raises(TypeError): |
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digit_sum(123.0) |
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222
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def test_digit_sum_bad_n_negative(self): |
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""" Test that :func:`lib.digital.digit_sum` raises a ``ValueError`` for a negative value for `n` """ |
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224
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digit_sum = self.get_import() |
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with pytest.raises(ValueError): |
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digit_sum(-123) |
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def test_digit_sum_bad_base_type_str(self): |
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229
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""" Test that :func:`lib.digital.digit_sum` raises a ``TypeError`` for a non-``int`` value for `base` (``str``) |
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230
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""" |
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digit_sum = self.get_import() |
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with pytest.raises(TypeError): |
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digit_sum(123, base="2") |
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235
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def test_digit_sum_bad_base_type_float(self): |
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236
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""" Test that :func:`lib.digital.digit_sum` raises a ``TypeError`` for a non-``int`` value for `base` |
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237
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(``float``) |
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""" |
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239
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digit_sum = self.get_import() |
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240
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with pytest.raises(TypeError): |
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241
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digit_sum(123, base=2.0) |
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243
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def test_digit_sum_bad_base_negative(self): |
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244
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""" Test that :func:`lib.digital.digit_sum` raises a ``ValueError`` for a negative value for `base` """ |
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245
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digit_sum = self.get_import() |
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246
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with pytest.raises(ValueError): |
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digit_sum(123, base=-2) |
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249
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250
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class TestNumDigits(object): |
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251
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""" A collection of positive and negative unit tests for the :func:`lib.digital.num_digits` function """ |
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@classmethod |
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def get_import(cls): |
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""" Get and return the :func:`lib.digital.num_digits` function |
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257
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.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
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:return: the :func:`lib.digital.num_digits` function |
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""" |
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from lib.digital import num_digits |
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return num_digits |
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264
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@pytest.mark.parametrize("value,expected_answer", |
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265
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[(0, 1), (9, 1), (10, 2), (55, 2), (99, 2), (100, 3), (999, 3), (1000, 4)]) |
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266
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def test_num_digits_correctness_kat(self, value: int, expected_answer: int): |
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""" Test the correctness of :func:`lib.digital.num_digits` using known answer tests |
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269
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:param value: the input value |
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:param expected_answer: the expected answer |
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:raises AssertionError: if :func:`lib.digital.num_digits` returns the wrong type |
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:raises AssertionError: if :func:`lib.digital.num_digits` returns the wrong value |
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""" |
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num_digits = self.get_import() |
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computed_answer = num_digits(value) |
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assert isinstance(computed_answer, num_digits.__annotations__["return"]), "wrong type" |
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assert computed_answer == expected_answer, "wrong answer" |
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280
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def test_num_digits_correctness_random(self): |
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281
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""" Test the correctness of :func:`lib.digital.num_digits` using random inputs with predictable answers |
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282
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283
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That is, generate a random length (`n`) and a random integer of that length (`x`). Then, check that |
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:func:`lib.digital.num_digits` evaluated at `x` equals `n`. |
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286
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:raises AssertionError: if :func:`lib.digital.num_digits` returns the wrong type |
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:raises AssertionError: if :func:`lib.digital.num_digits` returns the wrong value |
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""" |
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from random import randint |
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num_digits = self.get_import() |
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292
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for i in range(1000): # a moderate but arbitrary number of random tests |
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293
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digit_len = randint(1, 50) # a moderate but arbitrary length (n) |
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294
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random_integer = randint(10 ** (digit_len - 1), 10 ** digit_len - 1) # the random number (x) |
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295
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computed_answer = num_digits(random_integer) |
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assert isinstance(computed_answer, num_digits.__annotations__["return"]), "wrong type" |
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assert computed_answer == digit_len, "wrong answer" |
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299
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def test_num_digits_bad_n_type_str(self): |
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""" Test that :func:`lib.digital.num_digits` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) |
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301
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""" |
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num_digits = self.get_import() |
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with pytest.raises(TypeError): |
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304
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num_digits("123") |
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306
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def test_num_digits_bad_n_type_float(self): |
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307
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""" Test that :func:`lib.digital.num_digits` raises a ``TypeError`` for a non-``int`` value for `n` (``float``) |
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308
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""" |
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num_digits = self.get_import() |
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310
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with pytest.raises(TypeError): |
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311
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num_digits(123.0) |
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312
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313
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def test_num_digits_bad_n_negative(self): |
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""" Test that :func:`lib.digital.num_digits` raises a ``ValueError`` for a negative value for `n` """ |
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315
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num_digits = self.get_import() |
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316
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with pytest.raises(ValueError): |
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317
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num_digits(-123) |
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318
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319
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def test_num_digits_bad_base_type_str(self): |
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320
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""" Test that :func:`lib.digital.num_digits` raises a ``TypeError`` for a non-``int`` value for `base` (``str``) |
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321
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""" |
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322
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num_digits = self.get_import() |
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323
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with pytest.raises(TypeError): |
|
324
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num_digits(123, base="2") |
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325
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326
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def test_num_digits_bad_base_type_float(self): |
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327
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""" Test that :func:`lib.digital.num_digits` raises a ``TypeError`` for a non-``int`` value for `base` |
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328
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(``float``) |
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329
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""" |
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330
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num_digits = self.get_import() |
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331
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with pytest.raises(TypeError): |
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332
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num_digits(123, base=2.0) |
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333
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334
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def test_num_digits_bad_base_negative(self): |
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335
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""" Test that :func:`lib.digital.num_digits` raises a ``ValueError`` for a negative value for `base` """ |
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336
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num_digits = self.get_import() |
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337
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with pytest.raises(ValueError): |
|
338
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num_digits(123, base=-2) |
|
339
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340
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341
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class TestIsPandigital(object): |
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342
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""" A collection of positive and negative unit tests for the :func:`lib.digital.is_pandigital` function """ |
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343
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|
344
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@classmethod |
|
345
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def get_import(cls): |
|
346
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""" Get and return the :func:`lib.digital.is_pandigital` function |
|
347
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|
348
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|
.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
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|
349
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|
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|
350
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|
:return: the :func:`lib.digital.is_pandigital` function |
|
351
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|
|
""" |
|
352
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|
|
from lib.digital import is_pandigital |
|
353
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|
|
return is_pandigital |
|
354
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|
355
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|
|
@pytest.mark.parametrize("value,d,expected_answer", |
|
356
|
|
|
[(123, 3, True), (200, 3, False), (123, 4, False), ([1, 25, 43], 5, True), |
|
|
|
|
|
|
357
|
|
|
([1, 2, 2], 3, False), ([1, 2, 3, 4], 3, False)]) |
|
358
|
|
|
def test_is_pandigital_correctness(self, value: Union[int, List[int]], d: int, expected_answer: int): |
|
|
|
|
|
|
359
|
|
|
""" Test the correctness of :func:`lib.digital.is_pandigital` using known answer tests |
|
360
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|
|
|
|
361
|
|
|
:param value: the input value |
|
362
|
|
|
:param d: parameter in `d`-pandigital |
|
363
|
|
|
:param expected_answer: the expected answer |
|
364
|
|
|
:raises AssertionError: if :func:`lib.digital.is_pandigital` returns the wrong type |
|
365
|
|
|
:raises AssertionError: if :func:`lib.digital.is_pandigital` returns the wrong value |
|
366
|
|
|
""" |
|
367
|
|
|
|
|
368
|
|
|
is_pandigital = self.get_import() |
|
369
|
|
|
computed_answer = is_pandigital(value, d) |
|
370
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|
|
assert isinstance(computed_answer, is_pandigital.__annotations__["return"]), "wrong type" |
|
371
|
|
|
assert computed_answer == expected_answer, "wrong answer" |
|
372
|
|
|
|
|
373
|
|
|
def test_is_pandigital_bad_int_n_type_str(self): |
|
|
|
|
|
|
374
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) |
|
|
|
|
|
|
375
|
|
|
""" |
|
376
|
|
|
is_pandigital = self.get_import() |
|
377
|
|
|
with pytest.raises(TypeError): |
|
378
|
|
|
is_pandigital("123", 3) |
|
379
|
|
|
|
|
380
|
|
|
def test_is_pandigital_bad_int_n_type_float(self): |
|
|
|
|
|
|
381
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `n` |
|
|
|
|
|
|
382
|
|
|
(``float``) |
|
383
|
|
|
""" |
|
384
|
|
|
is_pandigital = self.get_import() |
|
385
|
|
|
with pytest.raises(TypeError): |
|
386
|
|
|
is_pandigital(123.0, 3) |
|
387
|
|
|
|
|
388
|
|
|
def test_is_pandigital_bad_list_n_type_str(self): |
|
|
|
|
|
|
389
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) |
|
|
|
|
|
|
390
|
|
|
""" |
|
391
|
|
|
is_pandigital = self.get_import() |
|
392
|
|
|
with pytest.raises(TypeError): |
|
393
|
|
|
is_pandigital([1, 2, "3"], 3) |
|
394
|
|
|
|
|
395
|
|
|
def test_is_pandigital_bad_list_n_type_float(self): |
|
|
|
|
|
|
396
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `n` |
|
|
|
|
|
|
397
|
|
|
(``float``) |
|
398
|
|
|
""" |
|
399
|
|
|
is_pandigital = self.get_import() |
|
400
|
|
|
with pytest.raises(TypeError): |
|
401
|
|
|
is_pandigital([1, 2.3], 3) |
|
402
|
|
|
|
|
403
|
|
|
def test_is_pandigital_bad_int_n_negative(self): |
|
|
|
|
|
|
404
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``ValueError`` for a negative value for `n` """ |
|
|
|
|
|
|
405
|
|
|
is_pandigital = self.get_import() |
|
406
|
|
|
with pytest.raises(ValueError): |
|
407
|
|
|
is_pandigital(-123, 3) |
|
408
|
|
|
|
|
409
|
|
|
def test_is_pandigital_bad_list_n_negative(self): |
|
|
|
|
|
|
410
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``ValueError`` for a negative value for `n` """ |
|
|
|
|
|
|
411
|
|
|
is_pandigital = self.get_import() |
|
412
|
|
|
with pytest.raises(ValueError): |
|
413
|
|
|
is_pandigital([-1, 2, 3], 3) |
|
414
|
|
|
|
|
415
|
|
|
def test_is_pandigital_bad_d_type_str(self): |
|
|
|
|
|
|
416
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `d` (``str``) |
|
|
|
|
|
|
417
|
|
|
""" |
|
418
|
|
|
is_pandigital = self.get_import() |
|
419
|
|
|
with pytest.raises(TypeError): |
|
420
|
|
|
is_pandigital(123, "3") |
|
421
|
|
|
|
|
422
|
|
|
def test_is_pandigital_bad_d_type_float(self): |
|
|
|
|
|
|
423
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `d` |
|
|
|
|
|
|
424
|
|
|
(``float``) |
|
425
|
|
|
""" |
|
426
|
|
|
is_pandigital = self.get_import() |
|
427
|
|
|
with pytest.raises(TypeError): |
|
428
|
|
|
is_pandigital(123, 3.0) |
|
429
|
|
|
|
|
430
|
|
|
def test_is_pandigital_bad_d_negative(self): |
|
|
|
|
|
|
431
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``ValueError`` for a negative value for `d` """ |
|
|
|
|
|
|
432
|
|
|
is_pandigital = self.get_import() |
|
433
|
|
|
with pytest.raises(ValueError): |
|
434
|
|
|
is_pandigital(123, -3) |
|
435
|
|
|
|
|
436
|
|
|
def test_is_pandigital_bad_lower_type_str(self): |
|
|
|
|
|
|
437
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `lower` |
|
|
|
|
|
|
438
|
|
|
(``str``) |
|
439
|
|
|
""" |
|
440
|
|
|
is_pandigital = self.get_import() |
|
441
|
|
|
with pytest.raises(TypeError): |
|
442
|
|
|
is_pandigital([1, 2, 3], 3, lower="10") |
|
443
|
|
|
|
|
444
|
|
|
def test_is_pandigital_bad_lower_type_float(self): |
|
|
|
|
|
|
445
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `lower` |
|
|
|
|
|
|
446
|
|
|
(``float``) |
|
447
|
|
|
""" |
|
448
|
|
|
is_pandigital = self.get_import() |
|
449
|
|
|
with pytest.raises(TypeError): |
|
450
|
|
|
is_pandigital([1, 2, 3], 3, lower=10.0) |
|
451
|
|
|
|
|
452
|
|
|
def test_is_pandigital_bad_lower_negative(self): |
|
|
|
|
|
|
453
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``ValueError`` for a negative value for `lower` """ |
|
|
|
|
|
|
454
|
|
|
is_pandigital = self.get_import() |
|
455
|
|
|
with pytest.raises(ValueError): |
|
456
|
|
|
is_pandigital(123, 3, lower=-10) |
|
457
|
|
|
|
|
458
|
|
|
def test_is_pandigital_bad_base_type_str(self): |
|
|
|
|
|
|
459
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `base` |
|
|
|
|
|
|
460
|
|
|
(``str``) |
|
461
|
|
|
""" |
|
462
|
|
|
is_pandigital = self.get_import() |
|
463
|
|
|
with pytest.raises(TypeError): |
|
464
|
|
|
is_pandigital(123, 3, base="10") |
|
465
|
|
|
|
|
466
|
|
|
def test_is_pandigital_bad_base_type_float(self): |
|
|
|
|
|
|
467
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``TypeError`` for a non-``int`` value for `base` |
|
|
|
|
|
|
468
|
|
|
(``float``) |
|
469
|
|
|
""" |
|
470
|
|
|
is_pandigital = self.get_import() |
|
471
|
|
|
with pytest.raises(TypeError): |
|
472
|
|
|
is_pandigital(123, 3, base=2.0) |
|
473
|
|
|
|
|
474
|
|
|
def test_is_pandigital_bad_base_negative(self): |
|
|
|
|
|
|
475
|
|
|
""" Test that :func:`lib.digital.is_pandigital` raises a ``ValueError`` for a negative value for `base` """ |
|
|
|
|
|
|
476
|
|
|
is_pandigital = self.get_import() |
|
477
|
|
|
with pytest.raises(ValueError): |
|
478
|
|
|
is_pandigital(123, 3, base=-10) |
|
479
|
|
|
|
|
480
|
|
|
|
|
481
|
|
|
class TestIsPalindrome(object): |
|
|
|
|
|
|
482
|
|
|
""" A collection of positive and negative unit tests for the :func:`lib.digital.is_palindrome` function """ |
|
|
|
|
|
|
483
|
|
|
|
|
484
|
|
|
@classmethod |
|
485
|
|
|
def get_import(cls): |
|
486
|
|
|
""" Get and return the :func:`lib.digital.is_palindrome` function |
|
487
|
|
|
|
|
488
|
|
|
.. note:: this isolates the import so any error/exception is raised by individual unit tests. |
|
|
|
|
|
|
489
|
|
|
|
|
490
|
|
|
:return: the :func:`lib.digital.is_palindrome` function |
|
491
|
|
|
""" |
|
492
|
|
|
from lib.digital import is_palindrome |
|
493
|
|
|
return is_palindrome |
|
494
|
|
|
|
|
495
|
|
|
@pytest.mark.parametrize("value,base,expected_answer", [(121, 10, True), (123, 10, False), (5, 2, True)]) |
|
|
|
|
|
|
496
|
|
|
def test_is_palindrome_correctness(self, value: int, base: int, expected_answer: int): |
|
497
|
|
|
""" Test the correctness of :func:`lib.digital.is_palindrome` using known answer tests |
|
498
|
|
|
|
|
499
|
|
|
:param value: the input value |
|
500
|
|
|
:param base: consider `value` in the given `base` |
|
501
|
|
|
:param expected_answer: the expected answer |
|
502
|
|
|
:raises AssertionError: if :func:`lib.digital.is_palindrome` returns the wrong type |
|
503
|
|
|
:raises AssertionError: if :func:`lib.digital.is_palindrome` returns the wrong value |
|
504
|
|
|
""" |
|
505
|
|
|
|
|
506
|
|
|
is_palindrome = self.get_import() |
|
507
|
|
|
computed_answer = is_palindrome(value, base=base) |
|
508
|
|
|
assert isinstance(computed_answer, is_palindrome.__annotations__["return"]), "wrong type" |
|
509
|
|
|
assert computed_answer == expected_answer, "wrong answer" |
|
510
|
|
|
|
|
511
|
|
|
def test_is_palindrome_bad_n_type_str(self): |
|
|
|
|
|
|
512
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``TypeError`` for a non-``int`` value for `n` (``str``) |
|
|
|
|
|
|
513
|
|
|
""" |
|
514
|
|
|
is_palindrome = self.get_import() |
|
515
|
|
|
with pytest.raises(TypeError): |
|
516
|
|
|
is_palindrome("123") |
|
517
|
|
|
|
|
518
|
|
|
def test_is_palindrome_bad_n_type_float(self): |
|
|
|
|
|
|
519
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``TypeError`` for a non-``int`` value for `n` |
|
|
|
|
|
|
520
|
|
|
(``float``) |
|
521
|
|
|
""" |
|
522
|
|
|
is_palindrome = self.get_import() |
|
523
|
|
|
with pytest.raises(TypeError): |
|
524
|
|
|
is_palindrome(123.0) |
|
525
|
|
|
|
|
526
|
|
|
def test_is_palindrome_bad_n_negative(self): |
|
|
|
|
|
|
527
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``ValueError`` for a negative value for `n` """ |
|
|
|
|
|
|
528
|
|
|
is_palindrome = self.get_import() |
|
529
|
|
|
with pytest.raises(ValueError): |
|
530
|
|
|
is_palindrome(-123) |
|
531
|
|
|
|
|
532
|
|
|
def test_is_palindrome_bad_base_type_str(self): |
|
|
|
|
|
|
533
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``TypeError`` for a non-``int`` value for `base` |
|
|
|
|
|
|
534
|
|
|
(``str``) |
|
535
|
|
|
""" |
|
536
|
|
|
is_palindrome = self.get_import() |
|
537
|
|
|
with pytest.raises(TypeError): |
|
538
|
|
|
is_palindrome(123, base="2") |
|
539
|
|
|
|
|
540
|
|
|
def test_is_palindrome_bad_base_type_float(self): |
|
|
|
|
|
|
541
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``TypeError`` for a non-``int`` value for `base` |
|
|
|
|
|
|
542
|
|
|
(``float``) |
|
543
|
|
|
""" |
|
544
|
|
|
is_palindrome = self.get_import() |
|
545
|
|
|
with pytest.raises(TypeError): |
|
546
|
|
|
is_palindrome(123, base=2.0) |
|
547
|
|
|
|
|
548
|
|
|
def test_is_palindrome_bad_base_negative(self): |
|
|
|
|
|
|
549
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``ValueError`` for a negative value for `base` """ |
|
|
|
|
|
|
550
|
|
|
is_palindrome = self.get_import() |
|
551
|
|
|
with pytest.raises(ValueError): |
|
552
|
|
|
is_palindrome(123, base=-2) |
|
553
|
|
|
|
|
554
|
|
|
@pytest.mark.parametrize("base", [1, 3, 4, 5, 6, 7, 9, 11, 12, 13, 14, 15, 200]) |
|
555
|
|
|
def test_is_palindrome_unsupported_base(self, base: int): |
|
|
|
|
|
|
556
|
|
|
""" Test that :func:`lib.digital.is_palindrome` raises a ``ValueError`` for unsupported values of `base` |
|
|
|
|
|
|
557
|
|
|
|
|
558
|
|
|
:param base: consider `value` in the given `base` |
|
559
|
|
|
""" |
|
560
|
|
|
|
|
561
|
|
|
is_palindrome = self.get_import() |
|
562
|
|
|
with pytest.raises(ValueError): |
|
563
|
|
|
is_palindrome(111, base=base) |
|
564
|
|
|
|
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