def test_edge(self):
graph = NoDashDiGraph()
graph.edge("foo", "bar", color="blue")
assert list(graph) == [
"digraph {\n",
"\tfoo -> bar [color=blue]\n",
"}\n",
]
graph.edge("foo", "bar", color="red")
assert list(graph) == [
"digraph {\n",
"\tfoo -> bar [color=red]\n",
"}\n",
]
def test_iter__subgraph(self):
graph = NoDashDiGraph(node_attr={"style": "filled"})
graph.node("foo", color="red")
graph.node("bar", color="green")
graph.edge("foo", "bar", color="blue")
graph.comment = "This is a comment."
print(str(graph))
assert list(graph.__iter__(subgraph=True)) == [
"// This is a comment.\n",
"{\n",
"\tnode [style=filled]\n",
"\tbar [color=green]\n",
"\tfoo [color=red]\n",
"\tfoo -> bar [color=blue]\n",
"}\n",
]