def test_singular2plural():
r"""Test conversion from singular element names to plural ones and back."""
pairs = [('face', 'faces'), ('vertex', 'vertices'),
('vertex_index', 'vertex_indices')]
for s, p in pairs:
assert(PlyMetaschemaType.singular2plural(s) == p)
assert(PlyMetaschemaType.plural2singular(p) == s)
with pytest.raises(ValueError):
PlyMetaschemaType.plural2singular('invalid')
def test_singular2plural():
r"""Test conversion from singular element names to plural ones and back."""
pairs = [('face', 'faces'), ('vertex', 'vertices'),
('vertex_index', 'vertex_indices')]
for s, p in pairs:
assert_equal(PlyMetaschemaType.singular2plural(s), p)
assert_equal(PlyMetaschemaType.plural2singular(p), s)
assert_raises(ValueError, PlyMetaschemaType.plural2singular, 'invalid')