def test_mesh_n_groups03(self):
mesh1 = Mesh(vertices=np.arange(5),
polygon_vertex_indices=[[0, 1, 2]],
group_names=["F", "U", "U"])
self.assertEqual(mesh1.n_groups(), 3)
def test_mesh_n_groups01(self):
mesh1 = Mesh(vertices=np.arange(5), polygon_vertex_indices=[[0, 1, 2]])
self.assertEqual(mesh1.n_groups(), 0)