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"""Test suite for cross-python compatibility helpers."""
import pytest
from cheroot._compat import extract_bytes, ntob, ntou, bton
@pytest.mark.parametrize(
('func', 'inp', 'out'),
(
(ntob, 'bar', b'bar'),
(ntou, 'bar', u'bar'),
(bton, b'bar', 'bar'),
),
)
def test_compat_functions_positive(func, inp, out):
"""Check that compatibility functions work with correct input."""
assert func(inp, encoding='utf-8') == out
@pytest.mark.parametrize(
'func',
(
ntob,
ntou,
),
)
def test_compat_functions_negative_nonnative(func):
"""Check that compatibility functions fail loudly for incorrect input."""
non_native_test_str = b'bar'
with pytest.raises(TypeError):
func(non_native_test_str, encoding='utf-8')
def test_ntou_escape():
"""Check that ``ntou`` supports escape-encoding under Python 2."""
expected = u'hišřії'
actual = ntou('hi\u0161\u0159\u0456\u0457', encoding='escape')
assert actual == expected
@pytest.mark.parametrize(
('input_argument', 'expected_result'),
(
(b'qwerty', b'qwerty'),
(memoryview(b'asdfgh'), b'asdfgh'),
),
)
def test_extract_bytes(input_argument, expected_result):
"""Check that legitimate inputs produce bytes."""
assert extract_bytes(input_argument) == expected_result
def test_extract_bytes_invalid():
"""Ensure that invalid input causes exception to be raised."""
with pytest.raises(
ValueError,
match=r'^extract_bytes\(\) only accepts bytes '
'and memoryview/buffer$',
):
extract_bytes(u'some юнікод їїї')
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