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# Author: Christian Brodbeck <christianbrodbeck@nyu.edu>
#
# License: BSD (3-clause)
import os
import os.path as op
from numpy import array
from numpy.testing import assert_allclose
import pytest
from mne.datasets import testing
from mne.io.tests import data_dir as fiff_data_dir
from mne.utils import _TempDir, requires_mayavi, run_tests_if_main, traits_test
from mne.channels import read_dig_montage
data_path = testing.data_path(download=False)
subjects_dir = op.join(data_path, 'subjects')
bem_path = op.join(subjects_dir, 'sample', 'bem', 'sample-1280-bem.fif')
inst_path = op.join(data_path, 'MEG', 'sample', 'sample_audvis_trunc_raw.fif')
fid_path = op.join(fiff_data_dir, 'fsaverage-fiducials.fif')
@testing.requires_testing_data
@requires_mayavi
@traits_test
def test_bem_source():
"""Test SurfaceSource."""
from mne.gui._file_traits import SurfaceSource
bem = SurfaceSource()
assert bem.surf.rr.shape == (0, 3)
assert bem.surf.tris.shape == (0, 3)
bem.file = bem_path
assert bem.surf.rr.shape == (642, 3)
assert bem.surf.tris.shape == (1280, 3)
@testing.requires_testing_data
@requires_mayavi
@traits_test
def test_fiducials_source():
"""Test FiducialsSource."""
from mne.gui._file_traits import FiducialsSource
fid = FiducialsSource()
fid.file = fid_path
points = array([[-0.08061612, -0.02908875, -0.04131077],
[0.00146763, 0.08506715, -0.03483611],
[0.08436285, -0.02850276, -0.04127743]])
assert_allclose(fid.points, points, 1e-6)
fid.file = ''
assert fid.points is None
@testing.requires_testing_data
@requires_mayavi
@traits_test
def test_inst_source():
"""Test DigSource."""
from mne.gui._file_traits import DigSource
tempdir = _TempDir()
inst = DigSource()
assert inst.inst_fname == '-'
inst.file = inst_path
assert inst.inst_dir == op.dirname(inst_path)
lpa = array([[-7.13766068e-02, 0.00000000e+00, 5.12227416e-09]])
nasion = array([[3.72529030e-09, 1.02605611e-01, 4.19095159e-09]])
rpa = array([[7.52676800e-02, 0.00000000e+00, 5.58793545e-09]])
assert_allclose(inst.lpa, lpa)
assert_allclose(inst.nasion, nasion)
assert_allclose(inst.rpa, rpa)
montage = read_dig_montage(fif=inst_path) # test reading DigMontage
montage_path = op.join(tempdir, 'temp_montage.fif')
montage.save(montage_path)
inst.file = montage_path
assert_allclose(inst.lpa, lpa)
assert_allclose(inst.nasion, nasion)
assert_allclose(inst.rpa, rpa)
@testing.requires_testing_data
@requires_mayavi
@traits_test
def test_subject_source():
"""Test SubjectSelector."""
from mne.gui._file_traits import MRISubjectSource
mri = MRISubjectSource()
mri.subjects_dir = subjects_dir
assert 'sample' in mri.subjects
mri.subject = 'sample'
@testing.requires_testing_data
@requires_mayavi
@traits_test
def test_subject_source_with_fsaverage():
"""Test SubjectSelector."""
from mne.gui._file_traits import MRISubjectSource
tempdir = _TempDir()
mri = MRISubjectSource()
assert not mri.can_create_fsaverage
pytest.raises(RuntimeError, mri.create_fsaverage)
mri.subjects_dir = tempdir
assert mri.can_create_fsaverage
assert not op.isdir(op.join(tempdir, 'fsaverage'))
# fake FREESURFER_HOME
old_val = os.getenv('FREESURFER_HOME')
os.environ['FREESURFER_HOME'] = data_path
try:
mri.create_fsaverage()
finally:
if old_val is not None:
os.environ['FREESURFER_HOME'] = old_val
assert op.isdir(op.join(tempdir, 'fsaverage'))
run_tests_if_main()
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