public void Predicate_Throws()
{
var graph = new BidirectionalGraph <TestVertex, Edge <TestVertex> >();
var predicate = new IsolatedVertexPredicate <TestVertex, Edge <TestVertex> >(graph);
// ReSharper disable ReturnValueOfPureMethodIsNotUsed
Assert.Throws <VertexNotFoundException>(() => predicate.Test(new TestVertex("1")));
// ReSharper disable once AssignNullToNotNullAttribute
Assert.Throws <ArgumentNullException>(() => predicate.Test(null));
// ReSharper restore ReturnValueOfPureMethodIsNotUsed
}
public void Predicate <TGraph>([NotNull] TGraph graph)
where TGraph
: IBidirectionalGraph <int, Edge <int> >
, IMutableVertexSet <int>
, IMutableEdgeListGraph <int, Edge <int> >
{
var predicate = new IsolatedVertexPredicate <int, Edge <int> >(graph);
graph.AddVertex(1);
graph.AddVertex(2);
Assert.IsTrue(predicate.Test(1));
Assert.IsTrue(predicate.Test(2));
graph.AddVertex(3);
var edge13 = new Edge <int>(1, 3);
graph.AddEdge(edge13);
Assert.IsFalse(predicate.Test(1));
Assert.IsTrue(predicate.Test(2));
Assert.IsFalse(predicate.Test(3));
var edge12 = new Edge <int>(1, 2);
graph.AddEdge(edge12);
Assert.IsFalse(predicate.Test(1));
Assert.IsFalse(predicate.Test(2));
Assert.IsFalse(predicate.Test(3));
var edge23 = new Edge <int>(2, 3);
graph.AddEdge(edge23);
Assert.IsFalse(predicate.Test(1));
Assert.IsFalse(predicate.Test(2));
Assert.IsFalse(predicate.Test(3));
graph.RemoveEdge(edge23);
Assert.IsFalse(predicate.Test(1));
Assert.IsFalse(predicate.Test(2));
Assert.IsFalse(predicate.Test(3));
graph.RemoveEdge(edge12);
Assert.IsFalse(predicate.Test(1));
Assert.IsTrue(predicate.Test(2));
Assert.IsFalse(predicate.Test(3));
graph.RemoveEdge(edge13);
Assert.IsTrue(predicate.Test(1));
Assert.IsTrue(predicate.Test(2));
Assert.IsTrue(predicate.Test(3));
}
public void removeIsolatedVertices()
{
var graph = new BidirectionalGraph <int, IEdge <int> >();
graph.AddVertex(1);
var edge = new EquatableEdge <int>(2, 3);
graph.AddVerticesAndEdge(edge);
var predicate = new IsolatedVertexPredicate <int, IEdge <int> >(graph);
graph.RemoveVertexIf(predicate.Test);
Assert.IsTrue(graph.ContainsVertex(2));
Assert.IsTrue(graph.ContainsEdge(edge));
Assert.IsFalse(graph.ContainsVertex(1));
}
