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#
#   See COPYING file distributed along with the PyMVPA package for the
#   copyright and license terms.
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"""Unit tests for PyMVPA surface searchlight functions specific for
handling AFNI datasets"""

import numpy as np

import os
from os.path import join as pathjoin
import tempfile
import copy

from mvpa2.testing import *

from mvpa2.support.nibabel import afni_niml, afni_niml_dset, afni_niml_roi, \
    surf, afni_suma_spec
from mvpa2.datasets import niml
from mvpa2.datasets.base import Dataset, dataset_wizard



class SurfTests(unittest.TestCase):
    """Test for AFNI I/O together with surface-based stuff

    NNO Aug 2012

    'Ground truth' is whatever output is returned by the implementation
    as of mid-Aug 2012"""


    def _get_rng(self):
        keys = [(17 * i ** 5 + 78234745 * i + 8934) % (2 ** 32 - 1)
                for i in range(624)]
        keys = np.asanyarray(keys, dtype=np.uint32)
        rng = np.random.RandomState()
        rng.set_state(('MT19937', keys, 0))
        return rng


    def test_afni_niml(self):
        # just a bunch of tests

        ps = afni_niml._partial_string

        assert_equal(ps("", 0, 0), "")
        assert_equal(ps("ab", 0, 0), "")
        assert_equal(ps("abcdefghij", 0, 0), "")
        assert_equal(ps("", 2, 0), "")
        assert_equal(ps("ab", 2, 0), "")
        assert_equal(ps("abcdefghij", 2, 0), "")
        assert_equal(ps("", 0, 1), "")
        assert_equal(ps("ab", 0, 1), " ... b")
        assert_equal(ps("abcdefghij", 0, 1), " ... j")
        assert_equal(ps("", 2, 1), "")
        assert_equal(ps("ab", 2, 1), "")
        assert_equal(ps("abcdefghij", 2, 1), " ... j")
        assert_equal(ps("", 0, 100), "")
        assert_equal(ps("ab", 0, 100), "ab")
        assert_equal(ps("abcdefghij", 0, 100), "abcdefghij")
        assert_equal(ps("", 2, 100), "")
        assert_equal(ps("ab", 2, 100), "")
        assert_equal(ps("abcdefghij", 2, 100), "cdefghij")

        data = np.asarray([[1347506771, 1347506772],
                           [1347506773, 1347506774]],
                          dtype=np.int32)

        fmt_data_reprs = dict(text='1347506771 1347506772\n1347506773 1347506774',
                              binary='SRQPTRQPURQPVRQP',
                              base64='U1JRUFRSUVBVUlFQVlJRUA==')

        minimal_niml_struct = [{'dset_type': 'Node_Bucket',
                                'name': 'AFNI_dataset',
                                'ni_form': 'ni_group',
                                'nodes': [{'data': data,
                                           'data_type': 'Node_Bucket_data',
                                           'name': 'SPARSE_DATA',
                                           'ni_dimen': '2',
                                           'ni_type': '2*int32'},
                                          {'atr_name': 'COLMS_LABS',
                                           'data': 'col_0;col_1',
                                           'name': 'AFNI_atr',
                                           'ni_dimen': '1',
                                           'ni_type': 'String'}]}]


        def _eq(p, q):
            # helper function: equality for both arrays and other things
            return np.all(p == q) if type(p) is np.ndarray else p == q


        for fmt, data_repr in fmt_data_reprs.items():
            s = afni_niml.rawniml2string(minimal_niml_struct, fmt)
            d = afni_niml.string2rawniml(s)

            # ensure data was converted properly

            for k, v in minimal_niml_struct[0].items():
                if k == 'nodes':
                    # at least in one of the data
                    for node in v:
                        for kk, vv in node.items():
                            # at least one of the data fields should have a value matching
                            # that from the expected converted value
                            dvals = [d[0]['nodes'][i].get(kk, None) for i in range(len(v))]
                            assert_true(any([_eq(vv, dval) for dval in dvals]))

                elif k != 'name':
                    # check header was properly converted
                    assert_true(('%s="%s"' % (k, v)).encode() in s)


            # check that if we remove some important information, then parsing fails
            important_keys = ['ni_form', 'ni_dimen', 'ni_type']

            for k in important_keys:
                s_bad = s.replace(k.encode(), b'foo')
                # assert_raises((KeyError, ValueError), afni_niml.string2rawniml, s_bad)

            # adding garbage at the beginning or end should fail the parse
            garbage = "GARBAGE".encode()
            assert_raises((KeyError, ValueError), afni_niml.string2rawniml, s + garbage)
            assert_raises((KeyError, ValueError), afni_niml.string2rawniml, garbage + s)

            # allow entries with no data, such as lacking node indices
            # in case AFNI's 3dVol2Surf was run without node index output
            niml_struct_empty_nodes = copy.deepcopy(minimal_niml_struct)
            niml_struct_empty_nodes[0]['nodes'].append({'name': 'INDEX_LIST'})

            s_empty_nodes = afni_niml.rawniml2string(niml_struct_empty_nodes, fmt)
            d_empty_nodes = afni_niml.string2rawniml(s_empty_nodes)
            assert_array_equal(d[0]['nodes'][0]['data'],
                               d_empty_nodes[0]['nodes'][0]['data'])
            assert_equal(list(d[0]['nodes'][0].keys()),
                         list(d_empty_nodes[0]['nodes'][0].keys()))
            assert_array_equal(d[0]['nodes'][1]['data'],
                               d_empty_nodes[0]['nodes'][1]['data'])
            assert_equal(list(d[0]['nodes'][1].keys()),
                         list(d_empty_nodes[0]['nodes'][1].keys()))


    @with_tempfile('.niml.dset', 'dset')
    def test_surface_dset_niml_io_with_unicode(self, fn):
        ds = dataset_wizard(np.arange(20).reshape((4, 5)), targets=1, chunks=1)
        ds.sa['unicode'] = ['u1', 'uu2', 'uuu3', 'uuuu4']
        ds.sa['str'] = ['s1', 'ss2', 'sss3', 'ssss4']
        ds.fa['node_indices'] = np.arange(5)

        # ensure sample attributes are of String type (not array)
        niml_dict = afni_niml_dset.dset2rawniml(niml.to_niml(ds))
        expected_dtypes = dict(PYMVPA_SA_unicode='String',
                               PYMVPA_SA_str='String',
                               PYMVPA_SA_targets='1*int32')


        def assert_has_expected_datatype(name, expected_dtype, niml):
            """helper function"""
            nodes = niml_dict['nodes']

            for node in nodes:
                if node['name'] == name:
                    assert_equal(node['ni_type'], expected_dtype)
                    return

            raise ValueError('not found: %s', name)


        for name, expected_dtype in expected_dtypes.items():
            assert_has_expected_datatype(name, expected_dtype, niml)


        # test NIML I/O
        niml.write(fn, ds)

        # remove extra fields added when reading the file
        ds2 = niml.from_any(fn)
        ds2.a.pop('history')
        ds2.a.pop('filename')
        ds2.sa.pop('labels')
        ds2.sa.pop('stats')

        # NIML does not support int64, only int32;
        # compare equality of values in samples by setting the
        # datatype the same as in the input (int32 or int64 depending
        # on the platform)
        ds2.samples = np.asarray(ds2.samples, dtype=ds.samples.dtype)
        assert_datasets_equal(ds, ds2)


    @with_tempfile('.h5py', 'h5py')
    def test_surface_dset_h5py_io_with_unicode(self, fn):
        skip_if_no_external('h5py')
        from mvpa2.base.hdf5 import h5save, h5load

        ds = dataset_wizard(np.arange(20).reshape((4, 5)), targets=1, chunks=1)
        ds.sa['unicode'] = ['u1', 'uu2', 'uuu3', 'uuuu4']
        ds.sa['str'] = ['s1', 'ss2', 'sss3', 'ssss4']
        ds.fa['node_indices'] = np.arange(5)

        # test h5py I/O
        h5save(fn, ds)
        ds2 = h5load(fn)
        assert_datasets_equal(ds, ds2)


    @with_tempfile('.niml.dset', 'dset')
    def test_afni_niml_dset_with_2d_strings(self, fn):
        # test for 2D arrays with strings. These are possibly SUMA-incompatible
        # but should still be handled properly for i/o.
        # Addresses https://github.com/PyMVPA/PyMVPA/issues/163 (#163)
        samples = np.asarray([[1, 2, 3], [4, 5, 6]])
        labels = np.asarray(list(map(list, ['abcd', 'efgh'])))
        idxs = np.asarray([np.arange(10, 14), np.arange(20, 24)])

        ds = Dataset(samples, sa=dict(labels=labels, idxs=idxs))

        for fmt in ('binary', 'text', 'base64'):
            niml.write(fn, ds, fmt)

            ds_ = niml.read(fn)

            assert_array_equal(ds.samples, ds_.samples)

            for sa_key in list(ds.sa.keys()):
                v = ds.sa[sa_key].value
                v_ = ds_.sa[sa_key].value
                assert_array_equal(v, v_)


    @with_tempfile('.niml.dset', 'dset')
    def test_afni_niml_dset(self, fn):
        sz = (100, 45)  # dataset size
        rng = self._get_rng()  # generate random data

        expected_vals = {(0, 0): -2.13856, (sz[0] - 1, sz[1] - 1): -1.92434,
                         (sz[0], sz[1] - 1): None, (sz[0] - 1, sz[1]): None,
                         sz: None}

        # test for different formats in which the data is stored
        fmts = ['text', 'binary', 'base64']

        # also test for different datatypes
        tps = [np.int32, np.int64, np.float32, np.float64]

        # generated random data
        data = rng.normal(size=sz)

        # set labels for samples, and set node indices
        labels = ['lab_%d' % round(rng.uniform() * 1000)
                  for _ in range(sz[1])]
        node_indices = np.argsort(rng.uniform(size=(sz[0],)))
        node_indices = np.reshape(node_indices, (sz[0], 1))

        eps = .00001

        # test I/O
        # depending on the mode we do different tests (but on the same data)
        modes = ['normal', 'skipio', 'sparse2full']

        for fmt in fmts:
            for tp in tps:
                for mode in modes:
                    # make a dataset
                    dset = dict(data=np.asarray(data, tp),
                                labels=labels,
                                node_indices=node_indices)
                    dset_keys = list(dset.keys())

                    if mode == 'skipio':
                        # try conversion to/from raw NIML
                        # do not write to disk
                        r = afni_niml_dset.dset2rawniml(dset)
                        s = afni_niml.rawniml2string(r)
                        r2 = afni_niml.string2rawniml(s)
                        dset2 = afni_niml_dset.rawniml2dset(r2)[0]

                    else:
                        # write and read from disk
                        afni_niml_dset.write(fn, dset, fmt)
                        dset2 = afni_niml_dset.read(fn)
                        os.remove(fn)

                    # data in dset and dset2 should be identical
                    for k in dset_keys:
                        # general idea is to test whether v is equal to v2
                        v = dset[k]
                        v2 = dset2[k]

                        if k == 'data':
                            if mode == 'sparse2full':
                                # test the sparse2full feature
                                # this changes the order of the data over columns
                                # so we skip testing whether dset2 is equal to dset
                                nfull = 2 * sz[0]

                                dset3 = afni_niml_dset.sparse2full(dset2,
                                                                   pad_to_node=nfull)

                                assert_equal(dset3['data'].shape[0], nfull)

                                idxs = dset['node_indices'][:, 0]
                                idxs3 = dset3['node_indices'][:, 0]
                                vbig = np.zeros((nfull, sz[1]))
                                vbig[idxs, :] = v[np.arange(sz[0]), :]
                                v = vbig
                                v2 = dset3['data'][idxs3, :]
                            else:
                                # check that data is as expected
                                for pos, val in expected_vals.items():
                                    if val is None:
                                        assert_raises(IndexError, lambda x: x[pos], v2)
                                    else:
                                        val2 = np.asarray(val, tp)
                                        assert_true(abs(v2[pos] - val2) < eps)
                        if type(v) is list:
                            assert_equal(v, v2)
                        else:
                            eps_dec = 4
                            if mode != 'sparse2full' or k == 'data':
                                assert_array_almost_equal(v, v2, eps_dec)


    @with_tempfile('.niml.dset', 'dset')
    def test_niml(self, fn):
        d = dict(data=np.random.normal(size=(10, 2)),
                 node_indices=np.arange(10),
                 stats=['none', 'Tstat(2)'],
                 labels=['foo', 'bar'])
        a = niml.from_niml(d)
        b = niml.to_niml(a)

        afni_niml_dset.write(fn, b)

        readers = (niml.from_any,
                   lambda x: niml.from_niml(afni_niml_dset.read(x)))

        for reader in readers:
            cc = reader(fn)
            for dset in (a, cc):
                assert_equal(list(dset.sa['labels']), d['labels'])
                assert_equal(list(dset.sa['stats']), d['stats'])
                assert_array_equal(np.asarray(dset.fa['node_indices']).ravel(),
                                   d['node_indices'])

                eps_dec = 4
                assert_array_almost_equal(dset.samples, d['data'].transpose(),
                                          eps_dec)

        # some more tests to ensure that the order of elements is ok
        # (row first or column first)

        d = np.arange(10).reshape((5, -1)) + .5
        ds = Dataset(d)

        writers = [niml.write, afni_niml_dset.write]
        for i, writer in enumerate(writers):
            for form in ('text', 'binary', 'base64'):
                if i == 0:
                    writer(fn, ds, form=form)
                else:
                    writer(fn, dict(data=d.transpose()), form=form)

                x = afni_niml_dset.read(fn)
                assert_array_equal(x['data'], d.transpose())


    @with_tempfile('.niml.dset', 'dset')
    def test_niml_dset_voxsel(self, fn):
        if not externals.exists('nibabel'):
            return

        # This is actually a bit of an integration test.
        # It tests storing and retrieving searchlight results.
        # Imports are inline here so that it does not mess up the header
        # and makes the other unit tests more modular
        # XXX put this in a separate file?
        from mvpa2.misc.surfing import volgeom, surf_voxel_selection, queryengine
        from mvpa2.measures.searchlight import Searchlight
        from mvpa2.support.nibabel import surf
        from mvpa2.measures.base import Measure
        from mvpa2.datasets.mri import fmri_dataset

        class _Voxel_Count_Measure(Measure):
            # used to check voxel selection results
            is_trained = True


            def __init__(self, dtype, **kwargs):
                Measure.__init__(self, **kwargs)
                self.dtype = dtype


            def _call(self, dset):
                return self.dtype(dset.nfeatures)

        sh = (20, 20, 20)
        vg = volgeom.VolGeom(sh, np.identity(4))

        density = 20

        outer = surf.generate_sphere(density) * 10. + 5
        inner = surf.generate_sphere(density) * 5. + 5

        intermediate = outer * .5 + inner * .5
        xyz = intermediate.vertices

        radius = 50

        sel = surf_voxel_selection.run_voxel_selection(radius, vg, inner, outer)
        qe = queryengine.SurfaceVerticesQueryEngine(sel)

        for dtype in (int, float):
            sl = Searchlight(_Voxel_Count_Measure(dtype), queryengine=qe)

            ds = fmri_dataset(vg.get_empty_nifti_image(1))
            r = sl(ds)

            niml.write(fn, r)
            rr = niml.read(fn)

            os.remove(fn)

            assert_array_equal(r.samples, rr.samples)


    def test_niml_dset_stack(self):
        values = [np.random.normal(size=x) for x in [(10, 3), (10, 4), (10, 5)]]
        indices = [[0, 1, 2], [3, 2, 1, 0], None]

        dsets = []
        for v, i in zip(values, indices):
            dset = Dataset(v)
            if i is not None:
                dset.fa['node_indices'] = i
            dsets.append(dset)

        dset = niml.hstack(dsets)
        assert_equal(dset.nfeatures, 12)
        assert_equal(dset.nsamples, 10)
        indices = np.asarray([0, 1, 2, 6, 5, 4, 3, 7, 8, 9, 10, 11])
        assert_array_equal(dset.fa['node_indices'], indices)

        dset = niml.hstack(dsets, 10)
        dset = niml.hstack(dsets, 10)  # twice to ensure not overwriting
        assert_equal(dset.nfeatures, 30)
        indices = np.asarray([0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
                              13, 12, 11, 10, 14, 15, 16, 17, 18, 19,
                              20, 21, 22, 23, 24, 25, 26, 27, 28, 29])
        assert_array_equal(dset.fa['node_indices'], indices)

        assert_true(np.all(dset[:, 4].samples == 0))
        assert_array_equal(dset[:, 10:14].samples, dsets[1].samples)

        # If not enough space it should raise an error
        stacker = (lambda x: niml.hstack(dsets, x))
        assert_raises(ValueError, stacker, 2)

        # If sparse then with no padding it should fail
        dsets[0].fa.node_indices[0] = 3
        assert_raises(ValueError, stacker, None)

        # Using an illegal node index should raise an error
        dsets[1].fa.node_indices[0] = 666
        assert_raises(ValueError, stacker, 10)


    @with_tempfile('.niml.roi', 'dset')
    def test_afni_niml_roi(self, fn):
        payload = """# <Node_ROI
#  ni_type = "SUMA_NIML_ROI_DATUM"
#  ni_dimen = "5"
#  self_idcode = "XYZ_QlRYtdSyHmNr39qZWxD0wQ"
#  domain_parent_idcode = "XYZ_V_Ug6er2LCNoLy_OzxPsZg"
#  Parent_side = "no_side"
#  Label = "myroi"
#  iLabel = "12"
#  Type = "2"
#  ColPlaneName = "ROI.-.CoMminfl"
#  FillColor = "0.525490 0.043137 0.231373 1.000000"
#  EdgeColor = "0.000000 0.000000 1.000000 1.000000"
#  EdgeThickness = "2"
# >
 1 4 1 42946
 1 4 10 42946 42947 43062 43176 43289 43401 43512 43513 43623 43732
 1 4 8 43732 43623 43514 43404 43293 43181 43068 42954
 3 4 9 42954 42953 42952 42951 42950 42949 42948 42947 42946
 4 1 14 43063 43064 43065 43066 43067 43177 43178 43179 43180 43290 43291 43292 43402 43403
# </Node_ROI>"""

        with open(fn, 'w') as f:
            f.write(payload)

        rois = afni_niml_roi.read(fn)

        assert_equal(len(rois), 1)
        roi = rois[0]

        expected_keys = ['ni_type', 'ColPlaneName', 'iLabel', 'Parent_side',
                         'EdgeColor', 'Label', 'edges', 'ni_dimen',
                         'self_idcode', 'EdgeThickness', 'Type', 'areas',
                         'domain_parent_idcode', 'FillColor']

        assert_equal(set(roi.keys()), set(expected_keys))

        assert_equal(roi['Label'], 'myroi')
        assert_equal(roi['iLabel'], 12)

        # check edges
        arr = np.asarray
        expected_edges = [arr([42946]),
                          arr([42946, 42947, 43062, 43176, 43289, 43401,
                               43512, 43513, 43623, 43732]),
                          arr([43732, 43623, 43514, 43404, 43293, 43181,
                               43068, 42954]),
                          arr([42954, 42953, 42952, 42951, 42950, 42949,
                               42948, 42947, 42946])]

        for i in range(4):
            assert_array_equal(roi['edges'][i], expected_edges[i])

        # check nodes
        expected_nodes = [arr([43063, 43064, 43065, 43066, 43067, 43177, 43178,
                               43179, 43180, 43290, 43291, 43292, 43402, 43403])]

        assert_equal(len(roi['areas']), 1)
        assert_array_equal(roi['areas'][0], expected_nodes[0])


        # check mapping
        m = afni_niml_roi.read_mapping(rois)
        assert_equal(list(m.keys()), ['myroi'])

        unique_nodes = np.unique(expected_nodes[0])
        assert_array_equal(m['myroi'], unique_nodes)


    @with_tempfile()
    def test_afni_suma_spec(self, temp_dir):

        # XXX this function generates quite a few temporary files,
        #     which are removed at the end.
        #     the decorator @with_tempfile seems unsuitable as it only
        #     supports a single temporary file

        # make temporary directory
        os.mkdir(temp_dir)

        # generate surfaces
        inflated_surf = surf.generate_plane((0, 0, 0), (0, 1, 0), (0, 0, 1),
                                            10, 10)
        white_surf = inflated_surf + 1.

        # helper function
        _tmp = lambda x: pathjoin(temp_dir, x)


        # filenames for surfaces and spec file
        inflated_fn = _tmp('_lh_inflated.asc')
        white_fn = _tmp('_lh_white.asc')
        spec_fn = _tmp('lh.spec')

        spec_dir = os.path.split(spec_fn)[0]

        # generate SUMA-like spec dictionary
        white = dict(SurfaceFormat='ASCII',
                     EmbedDimension='3',
                     SurfaceType='FreeSurfer',
                     SurfaceName=white_fn,
                     Anatomical='Y',
                     LocalCurvatureParent='SAME',
                     LocalDomainParent='SAME',
                     SurfaceState='smoothwm')

        inflated = dict(SurfaceFormat='ASCII',
                        EmbedDimension='3',
                        SurfaceType='FreeSurfer',
                        SurfaceName=inflated_fn,
                        Anatomical='N',
                        LocalCurvatureParent=white_fn,
                        LocalDomainParent=white_fn,
                        SurfaceState='inflated')

        # make SurfaceSpec object
        spec = afni_suma_spec.SurfaceSpec([white], directory=spec_dir)
        spec.add_surface(inflated)

        # test __str__ and __repr__
        assert_true('SurfaceSpec instance with 2 surfaces'
                    ', 2 states ' in '%s' % spec)
        assert_true(('%r' % spec).startswith('SurfaceSpec'))

        # test finding surfaces
        inflated_ = spec.find_surface_from_state('inflated')
        assert_equal([(1, inflated)], inflated_)

        empty = spec.find_surface_from_state('unknown')
        assert_equal(empty, [])

        # test .same_states
        minimal = afni_suma_spec.SurfaceSpec([dict(SurfaceState=s)
                                              for s in ('smoothwm', 'inflated')])
        assert_true(spec.same_states(minimal))
        assert_false(spec.same_states(afni_suma_spec.SurfaceSpec(dict())))

        # test 'smart' surface file matching
        assert_equal(spec.get_surface_file('smo'), white_fn)
        assert_equal(spec.get_surface_file('inflated'), inflated_fn)
        assert_equal(spec.get_surface_file('this should be None'), None)

        # test i/o
        spec.write(spec_fn)
        spec_ = afni_suma_spec.from_any(spec_fn)

        # prepare for another (right-hemisphere) spec file
        lh_spec = spec
        rh_spec_fn = spec_fn.replace('lh', 'rh')

        rh_inflated_fn = _tmp(os.path.split(inflated_fn)[1].replace('_lh',
                                                                    '_rh'))
        rh_white_fn = _tmp(os.path.split(white_fn)[1].replace('_lh',
                                                              '_rh'))
        rh_spec_fn = _tmp('rh.spec')

        rh_white = dict(SurfaceFormat='ASCII',
                        EmbedDimension='3',
                        SurfaceType='FreeSurfer',
                        SurfaceName=rh_white_fn,
                        Anatomical='Y',
                        LocalCurvatureParent='SAME',
                        LocalDomainParent='SAME',
                        SurfaceState='smoothwm')

        rh_inflated = dict(SurfaceFormat='ASCII',
                           EmbedDimension='3',
                           SurfaceType='FreeSurfer',
                           SurfaceName=rh_inflated_fn,
                           Anatomical='N',
                           LocalCurvatureParent=rh_white_fn,
                           LocalDomainParent=rh_white_fn,
                           SurfaceState='inflated')

        rh_spec = afni_suma_spec.SurfaceSpec([rh_white], directory=spec_dir)
        rh_spec.add_surface(rh_inflated)

        # write files
        all_temp_fns = [spec_fn, rh_spec_fn]
        for fn, s in [(rh_inflated_fn, inflated_surf),
                      (rh_white_fn, white_surf),
                      (inflated_fn, inflated_surf),
                      (white_fn, white_surf)]:
            surf.write(fn, s)
            all_temp_fns.append(fn)

        # test adding views
        added_specs = afni_suma_spec.hemi_pairs_add_views((lh_spec, rh_spec),
                                                          'inflated', '.asc')

        for hemi, added_spec in zip(('l', 'r'), added_specs):
            states = ['smoothwm', 'inflated'] + ['CoM%sinflated' % i
                                                 for i in 'msiap']
            assert_equal(states, [s['SurfaceState']
                                  for s in added_specs[0].surfaces])
            all_temp_fns.extend([s['SurfaceName']
                                 for s in added_spec.surfaces])

        # test combining specs (bh=both hemispheres)
        bh_spec = afni_suma_spec.combine_left_right(added_specs)

        # test merging specs (mh=merged hemispheres)
        mh_spec, mh_surfs = afni_suma_spec.merge_left_right(bh_spec)

        assert_equal([s['SurfaceState'] for s in mh_spec.surfaces],
                     ['smoothwm'] + ['CoM%sinflated' % i for i in 'msiap'])



def suite():  # pragma: no cover
    """Create the suite"""
    return unittest.makeSuite(SurfTests)



if __name__ == '__main__':  # pragma: no cover
    import runner

    runner.run()
