# Copyright (c) 2025 Jan Malakhovski <oxij@oxij.org>
#
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"""Testing `kisstdlib.parsing` module."""
import typing as _t
from kisstdlib.parsing import *
def test_BytesTransformer() -> None:
unix2dos = BytesTransformer(LF2CRLF)
dos2unix = BytesTransformer(CRLF2LF)
def check(a: bytes, b: bytes) -> None:
assert unix2dos.update(a) == b
assert dos2unix.update(b) == a
check(b"", b"")
check(b"\n", b"\r\n")
check(b"foo\n", b"foo\r\n")
check(b"foo\nbar", b"foo\r\nbar")
check(b"foo\r\n", b"foo\r\r\n")
check(b"foo\r\nbar", b"foo\r\r\nbar")
assert dos2unix.update(b"foo\r") == b"foo"
assert dos2unix.update(b"bar") == b"\rbar"
assert dos2unix.update(b"foo\r") == b"foo"
assert dos2unix.update(b"\n") == b"\n"