public void FromExistingGraph_CopiesElements()
{
var original = DirectedGraphBuilder <string> .NewBuilder()
.AddElement("element 1")
.AddElement("element 2")
.CreateGraph();
var copyOfGraph = DirectedGraphBuilder <string> .FromExistingGraph(original).CreateGraph();
copyOfGraph.Elements.Should().Contain(original.Elements);
}
public void FromExistingGraph_CopiesDirectPredecessors()
{
var original = DirectedGraphBuilder <string> .NewBuilder()
.AddElement("from")
.AddElement("to")
.AddArrow("from", "to")
.CreateGraph();
var copyOfGraph = DirectedGraphBuilder <string> .FromExistingGraph(original).CreateGraph();
copyOfGraph.GetDirectPredecessorsOf("to").Should().Contain("from");
}