def test_creat_edge(self):
# create a box
b = get_test_box_shape()
# take the first edge
t = Topo(b)
edge_0 = next(t.edges()) # it's a TopoDS_Edge
assert not edge_0.IsNull()
# then create an edge
my_edge = Edge(edge_0)
assert not my_edge.IsNull()
assert my_edge.tolerance == 1e-06
assert my_edge.type == 'line'
assert my_edge.length() == 30.
