Feat: init graphs

tests/graphs/test_graph_set.py

@@ -0,0 +1,18 @@
+from plesna.graph_set import EdgeOnSet, GraphSet, Node
+
+
+def test_init():
+    nodeA = Node(name="A")
+    nodeB = Node(name="B")
+    nodeC = Node(name="C")
+
+    def arrow(sources, targets):
+        targets["C"].infos["res"] = sources["A"].name + sources["B"].name
+
+    edge1 = EdgeOnSet(
+        arrow=arrow, sources={"A": nodeA, "B": nodeB}, targets={"C": nodeC}
+    )
+    graph_set = GraphSet()
+    graph_set.append(edge1)
+
+    assert graph_set.node_sets == {frozenset([nodeA, nodeB]), frozenset([nodeC])}