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"""Test for slip helper functions."""
import unittest
from typing import Any
from pyvlx.slip import decode, encode, get_next_slip, is_slip, slip_pack
class TestSlip(unittest.TestCase):
"""Test class for slip helper functions."""
# pylint: disable=invalid-name
def encode_decode(self, decoded: Any, encoded: Any) -> None:
"""Decode encoded, encode decoded and test results."""
self.assertEqual(decode(encoded), decoded)
self.assertEqual(encode(decoded), encoded)
def test_simple(self) -> None:
"""Test decode and encode."""
self.encode_decode(
b"\xc0\xc0\xdb\xdb\xc0\xdb\xc0",
b"\xdb\xdc\xdb\xdc\xdb\xdd\xdb\xdd\xdb\xdc\xdb\xdd\xdb\xdc",
)
def test_empty(self) -> None:
"""Test decode and encode of empty string."""
self.encode_decode(b"", b"")
def test_real_live_example(self) -> None:
"""Test decode of real live example."""
self.encode_decode(
b"\x00\x10\x03\x02\x00\x01\x01\x00\x00\xc8\x00\x02\x1e\x06\x00\x03\x00\xc0",
b"\x00\x10\x03\x02\x00\x01\x01\x00\x00\xc8\x00\x02\x1e\x06\x00\x03\x00\xdb\xdc",
)
def test_slip(self) -> None:
"""Test is_slip function."""
self.assertTrue(is_slip(b"\xc0abc\xc0xx"))
self.assertFalse(is_slip(b"zz\xc0abc\xc0"))
self.assertFalse(is_slip(b"\xc0abc"))
self.assertFalse(is_slip(b"\xc0"))
def test_slip_pack(self) -> None:
"""Test slip_pack function."""
self.assertEqual(
slip_pack(b"\xc0\xc0\xdb\xdb\xc0\xdb\xc0"),
b"\xc0\xdb\xdc\xdb\xdc\xdb\xdd\xdb\xdd\xdb\xdc\xdb\xdd\xdb\xdc\xc0",
)
def test_get_next_slip(self) -> None:
"""Test get_next_slip function."""
self.assertEqual(
get_next_slip(
b"\xc0\xdb\xdc\xdb\xdc\xdb\xdd\xdb\xdd\xdb\xdc\xdb\xdd\xdb\xdc\xc0fnord"
),
(b"\xc0\xc0\xdb\xdb\xc0\xdb\xc0", b"fnord"),
)
def test_get_next_slip_no_complete_slip(self) -> None:
"""Test get_next_slip function with no complete slip frame beeing in queue."""
self.assertEqual(get_next_slip(b"zz\xc0abc\xc0"), (None, b"zz\xc0abc\xc0"))
def test_get_next_slip_empty_queue(self) -> None:
"""Test get_next_slip function with empty queue."""
self.assertEqual(get_next_slip(b""), (None, b""))
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