@testing.requires_testing_data
@requires_freesurfer
@requires_nibabel()
def test_get_volume_label_names():
    aseg_fname = op.join(subjects_dir, 'sample', 'mri', 'aseg.mgz')
    label_names = get_volume_labels_from_aseg(aseg_fname)
    assert_equal(label_names.count('Brain-Stem'), 1)
We should be able to execute find_free_prefix as read-only user
dataset/ETHPy150Open mne-tools/mne-python/mne/tests/test_source_space.py/test_get_volume_label_names--crossover with--dataset/ETHPy150Open SpriteLink/NIPAP/tests/nipap-ro.py/TestReadonly.test_find_free_prefix