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"""Unit tests for AliasArray module."""
import unittest
from pyvlx.api.frames.alias_array import AliasArray
from pyvlx.exception import PyVLXException
class TestAliasArray(unittest.TestCase):
"""Test class for AliasArray."""
# pylint: disable=too-many-public-methods,invalid-name
def test_empty(self) -> None:
"""Test empty alias array."""
alias_array = AliasArray()
self.assertEqual(bytes(alias_array), bytes(21))
self.assertEqual(str(alias_array), "")
def test_empty_raw(self) -> None:
"""Test empty alias array initialized from raw."""
alias_array = AliasArray(raw=bytes(21))
self.assertEqual(bytes(alias_array), bytes(21))
self.assertEqual(str(alias_array), "")
def test_from_one_element(self) -> None:
"""Test alias_array with one element."""
alias_array = AliasArray(raw=b"\x01abcd" + bytes(16))
self.assertEqual(bytes(alias_array), b"\x01abcd" + bytes(16))
self.assertEqual(str(alias_array), "6162=6364")
def test_from_four_elements(self) -> None:
"""Test alias_array with one element."""
alias_array = AliasArray(raw=b"\x05abcd1234efgh5678ijkl")
self.assertEqual(bytes(alias_array), b"\x05abcd1234efgh5678ijkl")
self.assertEqual(
str(alias_array), "6162=6364, 3132=3334, 6566=6768, 3536=3738, 696a=6b6c"
)
def test_deserialize_failure(self) -> None:
"""Test error while deserializing."""
with self.assertRaises(PyVLXException):
AliasArray(raw="string") # type: ignore[arg-type]
with self.assertRaises(PyVLXException):
AliasArray(raw=bytes(20))
with self.assertRaises(PyVLXException):
AliasArray(raw=b"\x06" + bytes(20))
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