protected static void ContainsEdge_SourceTarget_Test(
[NotNull] IIncidenceGraph <int, Edge <int> > graph,
[NotNull, InstantHandle] Action <Edge <int> > addVerticesAndEdge)
{
var edge1 = new Edge <int>(1, 2);
var edge2 = new Edge <int>(1, 3);
var edge3 = new Edge <int>(2, 2);
Assert.IsFalse(graph.ContainsEdge(1, 2));
Assert.IsFalse(graph.ContainsEdge(2, 1));
addVerticesAndEdge(edge1);
Assert.IsTrue(graph.ContainsEdge(1, 2));
Assert.IsFalse(graph.ContainsEdge(2, 1));
addVerticesAndEdge(edge2);
Assert.IsTrue(graph.ContainsEdge(1, 3));
Assert.IsFalse(graph.ContainsEdge(3, 1));
addVerticesAndEdge(edge3);
Assert.IsTrue(graph.ContainsEdge(2, 2));
// Vertices is not present in the graph
Assert.IsFalse(graph.ContainsEdge(0, 4));
Assert.IsFalse(graph.ContainsEdge(1, 4));
Assert.IsFalse(graph.ContainsEdge(4, 1));
}
protected static void ContainsEdge_SourceTarget_ImmutableGraph_ReversedTest(
[NotNull] IMutableVertexAndEdgeSet <int, Edge <int> > wrappedGraph,
[NotNull, InstantHandle] Func <IIncidenceGraph <int, SReversedEdge <int, Edge <int> > > > createGraph)
{
IIncidenceGraph <int, SReversedEdge <int, Edge <int> > > graph = createGraph();
var edge1 = new Edge <int>(1, 2);
var edge2 = new Edge <int>(1, 3);
var edge3 = new Edge <int>(2, 2);
Assert.IsFalse(graph.ContainsEdge(1, 2));
Assert.IsFalse(graph.ContainsEdge(2, 1));
wrappedGraph.AddVerticesAndEdge(edge1);
graph = createGraph();
Assert.IsFalse(graph.ContainsEdge(1, 2));
Assert.IsTrue(graph.ContainsEdge(2, 1));
wrappedGraph.AddVerticesAndEdge(edge2);
graph = createGraph();
Assert.IsFalse(graph.ContainsEdge(1, 3));
Assert.IsTrue(graph.ContainsEdge(3, 1));
wrappedGraph.AddVerticesAndEdge(edge3);
graph = createGraph();
Assert.IsTrue(graph.ContainsEdge(2, 2));
// Vertices is not present in the graph
Assert.IsFalse(graph.ContainsEdge(0, 4));
Assert.IsFalse(graph.ContainsEdge(1, 4));
Assert.IsFalse(graph.ContainsEdge(4, 1));
}
protected static void ContainsEdge_SourceTarget_ImmutableGraph_Test <TEdge>(
IMutableVertexAndEdgeSet <int, Edge <int> > wrappedGraph,
Func <IIncidenceGraph <int, TEdge> > createGraph)
where TEdge : IEdge <int>
{
IIncidenceGraph <int, TEdge> graph = createGraph();
var edge1 = new Edge <int>(1, 2);
var edge2 = new Edge <int>(1, 3);
var edge3 = new Edge <int>(2, 2);
Assert.IsFalse(graph.ContainsEdge(1, 2));
Assert.IsFalse(graph.ContainsEdge(2, 1));
wrappedGraph.AddVerticesAndEdge(edge1);
graph = createGraph();
Assert.IsTrue(graph.ContainsEdge(1, 2));
Assert.IsFalse(graph.ContainsEdge(2, 1));
wrappedGraph.AddVerticesAndEdge(edge2);
graph = createGraph();
Assert.IsTrue(graph.ContainsEdge(1, 3));
Assert.IsFalse(graph.ContainsEdge(3, 1));
wrappedGraph.AddVerticesAndEdge(edge3);
graph = createGraph();
Assert.IsTrue(graph.ContainsEdge(2, 2));
// Vertices is not present in the graph
Assert.IsFalse(graph.ContainsEdge(0, 4));
Assert.IsFalse(graph.ContainsEdge(1, 4));
Assert.IsFalse(graph.ContainsEdge(4, 1));
}