TEST: Add round-trip test

Author: effigies

nibabel/freesurfer/tests/test_io.py

@@ -12,7 +12,7 @@
 
 from nose.tools import assert_true
 import numpy as np
-from numpy.testing import assert_equal, assert_raises, dec, assert_allclose
+from numpy.testing import assert_equal, assert_raises, dec, assert_allclose, assert_array_equal
 
 from .. import (read_geometry, read_morph_data, read_annot, read_label,
                 write_geometry, write_morph_data, write_annot)
@@ -369,4 +369,9 @@ def test_write_annot_maxstruct():
         annot_path = 'c.annot'
 
         write_annot(annot_path, labels, rgba, names)
-        read_annot(annot_path)
+        # Validate the file can be read
+        rt_labels, rt_ctab, rt_names = read_annot(annot_path)
+        # Check round-trip
+        assert_array_equal(labels, rt_labels)
+        assert_array_equal(rgba, rt_ctab[:, :4])
+        assert_equal(names, [n.decode('ascii') for n in rt_names])