Fix style and add missing package

Author: cbrnr

pyproject.toml

@@ -47,6 +47,7 @@ test = [
   "build",
   "matplotlib",
   "mne",
+  "packaging",
   "pre-commit",
   "pytest",
   "pytest-cov",

tests/test_write_brainvision.py

@@ -8,12 +8,12 @@
 import re
 from datetime import datetime, timezone
 from importlib.metadata import version
-from packaging.version import Version
 
 import mne
 import numpy as np
 import pytest
 from numpy.testing import assert_allclose, assert_array_equal
+from packaging.version import Version
 
 from pybv.io import (
     SUPPORTED_FORMATS,
@@ -442,7 +442,7 @@ def test_write_read_cycle(tmpdir, meas_date, ref_ch_names):
     """Test that a write/read cycle produces identical data."""
     # First fail writing due to wrong unit
     unsupported_unit = "rV"
-    with pytest.warns(UserWarning, match="Encountered unsupported " "non-voltage unit"):
+    with pytest.warns(UserWarning, match="Encountered unsupported non-voltage unit"):
         write_brainvision(
             data=data,
             sfreq=sfreq,
@@ -653,7 +653,7 @@ def test_write_unsupported_units(tmpdir):
 
     # write brain vision file
     vhdr_fname = tmpdir / (fname + ".vhdr")
-    with pytest.warns(UserWarning, match="Encountered unsupported " "non-voltage unit"):
+    with pytest.warns(UserWarning, match="Encountered unsupported non-voltage unit"):
         write_brainvision(
             data=data,
             sfreq=sfreq,