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test_sequin.py
Rename SequinExhaustedException to SequinExhaustedError
Marco Ricci
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at 2024-06-30 16:37:52
test_sequin.py
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# SPDX-FileCopyrightText: 2024 Marco Ricci <m@the13thletter.info> # # SPDX-License-Identifier: MIT """Test sequin.Sequin.""" import collections import pytest import sequin class TestStaticFunctionality: @pytest.mark.parametrize(['sequence', 'base', 'expected'], [ ([1, 2, 3, 4, 5, 6], 10, 123456), ([1, 2, 3, 4, 5, 6], 100, 10203040506), ([0, 0, 1, 4, 9, 7], 10, 1497), ([1, 0, 0, 1, 0, 0, 0, 0], 2, 144), ([1, 7, 5, 5], 8, 0o1755), ]) def test_200_big_endian_number(self, sequence, base, expected): assert ( sequin.Sequin._big_endian_number(sequence, base=base) ) == expected @pytest.mark.parametrize( ['exc_type', 'exc_pattern', 'sequence' , 'base'], [ (ValueError, 'invalid base 3 digit:', [-1], 3), (ValueError, 'invalid base:', [0], 1), (TypeError, 'not an integer:', [0.0, 1.0, 0.0, 1.0], 2), ] ) def test_300_big_endian_number_exceptions(self, exc_type, exc_pattern, sequence, base): with pytest.raises(exc_type, match=exc_pattern): sequin.Sequin._big_endian_number(sequence, base=base) class TestSequin: @pytest.mark.parametrize(['sequence', 'is_bitstring', 'expected'], [ ([1, 0, 0, 1, 0, 1], False, [0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]), ([1, 0, 0, 1, 0, 1], True, [1, 0, 0, 1, 0, 1]), (b'OK', False, [0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1]), ('OK', False, [0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1]), ]) def test_200_constructor(self, sequence, is_bitstring, expected): seq = sequin.Sequin(sequence, is_bitstring=is_bitstring) assert seq.bases == {2: collections.deque(expected)} def test_201_generating(self): seq = sequin.Sequin([1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1], is_bitstring=True) assert seq.generate(1) == 0 assert seq.generate(5) == 3 assert seq.generate(5) == 3 assert seq.generate(5) == 1 with pytest.raises(sequin.SequinExhaustedError): seq.generate(5) with pytest.raises(sequin.SequinExhaustedError): seq.generate(1) seq = sequin.Sequin([1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1], is_bitstring=True) with pytest.raises(ValueError, match='invalid target range'): seq.generate(0) def test_210_internal_generating(self): seq = sequin.Sequin([1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1], is_bitstring=True) assert seq._generate_inner(5) == 3 assert seq._generate_inner(5) == 3 assert seq._generate_inner(5) == 1 assert seq._generate_inner(5) == 5 assert seq._generate_inner(1) == 0 seq = sequin.Sequin([1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1], is_bitstring=True) assert seq._generate_inner(1) == 0 with pytest.raises(ValueError, match='invalid target range'): seq._generate_inner(0) with pytest.raises(ValueError, match='invalid base:'): seq._generate_inner(16, base=1) def test_211_shifting(self): seq = sequin.Sequin([1, 0, 1, 0, 0, 1, 0, 0, 0, 1], is_bitstring=True) assert seq.bases == {2: collections.deque([1, 0, 1, 0, 0, 1, 0, 0, 0, 1])} # assert seq._all_or_nothing_shift(3) == (1, 0, 1) assert seq._all_or_nothing_shift(3) == (0, 0, 1) assert seq.bases[2] == collections.deque([0, 0, 0, 1]) # assert seq._all_or_nothing_shift(5) == () assert seq.bases[2] == collections.deque([0, 0, 0, 1]) # assert seq._all_or_nothing_shift(4), (0, 0, 0, 1) assert 2 not in seq.bases @pytest.mark.parametrize( ['sequence', 'is_bitstring', 'exc_type', 'exc_pattern'], [ ([0, 1, 2, 3, 4, 5, 6, 7], True, ValueError, 'sequence item out of range'), (u'こんにちは。', False, ValueError, 'sequence item out of range'), ] ) def test_300_constructor_exceptions(self, sequence, is_bitstring, exc_type, exc_pattern): with pytest.raises(exc_type, match=exc_pattern): sequin.Sequin(sequence, is_bitstring=is_bitstring)
