def test_error_on_not_exist_vertex_property(self):
g = self.NXGraph()
g.add_node(0, foo="node")
with pytest.raises(
InvalidArgumentError,
match="graph not contains the vertex property weight"):
sg = g.project_to_simple(v_prop="weight")
def test_error_on_not_exist_edge_property(self):
g = self.NXGraph()
g.add_edge(0, 1, weight=3)
with pytest.raises(
InvalidArgumentError, match="graph not contains the edge property type"
):
sg = g.project_to_simple(e_prop="type")
def test_error_on_view_project_to_simple(self):
g = self.NXGraph()
g._graph = None # a graph view always has '_graph_' attribute
with pytest.raises(TypeError,
match="graph view can't project to simple graph"):
sg = g.project_to_simple()