public void Test3Vertices()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, null);
graph.AddEdge(1, 0, 100, null);
graph.AddEdge(1, 2, 100, null);
graph.AddEdge(2, 1, 100, null);
graph.Compress();
// contract graph.
var hierarchyBuilder = new HierarchyBuilder(graph, new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue)),
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edge10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge10);
var edge12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edge12);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
}
public void TestQuadrilateralOneWay()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 2, 100, true);
graph.AddEdge(2, 0, 100, false);
graph.AddEdge(0, 3, 10, false);
graph.AddEdge(3, 0, 10, true);
graph.AddEdge(1, 2, 1000, false);
graph.AddEdge(2, 1, 1000, true);
graph.AddEdge(1, 3, 10000, true);
graph.AddEdge(3, 1, 10000, false);
graph.Compress();
// create a witness calculator and the priority calculator.
var contractedFlags = new BitArray32(graph.VertexCount);
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph,
new Itinero.Algorithms.Contracted.EdgeBased.Witness.DykstraWitnessCalculator(10));
//var priorityCalculator = new EdgeDifferencePriorityCalculator(graph,
// new WitnessCalculatorMock(new uint[][]
// {
// new uint[] { 1, 3, 2, 1 },
// new uint[] { 3, 0, 1, 1 }
// }));
Assert.AreEqual(0, priorityCalculator.Calculate(contractedFlags, (i) => null, 0));
Assert.AreEqual(0, priorityCalculator.Calculate(contractedFlags, (i) => null, 1));
Assert.AreEqual(0, priorityCalculator.Calculate(contractedFlags, (i) => null, 2));
Assert.AreEqual(0, priorityCalculator.Calculate(contractedFlags, (i) => null, 3));
}
public void TestDoubleContractionOneway()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, null);
graph.AddEdge(1, 0, 100, null);
graph.AddEdge(1, 2, 100, null);
graph.AddEdge(2, 1, 100, null);
graph.AddEdge(1, 3, 10, null);
graph.AddEdge(3, 1, 10, null);
graph.AddEdge(3, 2, 10, null);
graph.AddEdge(2, 3, 10, null);
graph.Compress();
// contract graph.
var priorities = new Dictionary <uint, float>();
priorities.Add(1, 0);
priorities.Add(0, 1);
priorities.Add(2, 2);
priorities.Add(3, 3);
var hierarchyBuilder = new HierarchyBuilder(graph,
new MockPriorityCalculator(priorities),
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// edges 1->2 and 2->1 should have been removed.
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
var edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(110, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(10, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(10, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(Constants.NO_VERTEX, edgeData.ContractedId);
}
public void TestOneEdgeAugmented()
{
// build graph.
var graph = new Itinero.Graphs.Graph(EdgeDataSerializer.Size);
graph.AddVertex(0);
graph.AddVertex(1);
graph.AddEdge(0, 1, EdgeDataSerializer.Serialize(new EdgeData()
{
Distance = 100,
Profile = 1
}));
// build speed profile function.
var speed = 100f / 3.6f;
Func <ushort, FactorAndSpeed> getFactor = (x) =>
{
return(new FactorAndSpeed()
{
Direction = 0,
SpeedFactor = 1.0f / speed,
Value = 1.0f / speed
});
};
// convert graph.
var directedGraph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicAugmentedFixedSize);
var algorithm = new DirectedGraphBuilder <Weight>(graph, directedGraph, new WeightHandler(getFactor));
algorithm.Run();
// check result.
Assert.IsTrue(algorithm.HasRun);
Assert.IsTrue(algorithm.HasSucceeded);
directedGraph.Compress();
Assert.AreEqual(2, directedGraph.VertexCount);
Assert.AreEqual(2, directedGraph.EdgeCount);
// verify all edges.
var edges = directedGraph.GetEdgeEnumerator(0);
Assert.AreEqual(1, edges.Count());
var data = ContractedEdgeDataSerializer.SerializeDynamicAugmented(100 * getFactor(1).Value, null, 100, 100 * getFactor(1).Value);
Assert.AreEqual(data[0], edges.First().Data[0]);
Assert.AreEqual(data[1], edges.First().Data[1]);
Assert.AreEqual(data[2], edges.First().Data[2]);
Assert.AreEqual(1, edges.First().Neighbour);
edges = directedGraph.GetEdgeEnumerator(1);
Assert.AreEqual(1, edges.Count());
data = ContractedEdgeDataSerializer.SerializeDynamicAugmented(100 * getFactor(1).Value, null, 100, 100 * getFactor(1).Value);
Assert.AreEqual(data[0], edges.First().Data[0]);
Assert.AreEqual(data[1], edges.First().Data[1]);
Assert.AreEqual(data[2], edges.First().Data[2]);
Assert.AreEqual(0, edges.First().Neighbour);
}
public void TestDoubleContraction()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 2, 100, null);
graph.AddEdge(2, 0, 100, null);
graph.AddEdge(0, 3, 100, null);
graph.AddEdge(3, 0, 100, null);
graph.AddEdge(1, 2, 200, null);
graph.AddEdge(2, 1, 200, null);
graph.AddEdge(1, 3, 200, null);
graph.AddEdge(3, 1, 200, null);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.DepthFactor = 0;
priorityCalculator.ContractedFactor = 0;
var hierarchyBuilder = new HierarchyBuilder(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// check edges.
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNull(edge);
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
}
public void TestSerialize()
{
var graph = new DirectedDynamicGraph(10, 1);
// add and compress.
graph.AddEdge(0, 1, 1);
graph.Compress();
var expectedSize = 1 + 8 + 8 + 8 + 4 + // the header: version byte two longs representing vertex, edge count and the size of the edge array and one int for minimum edge size.
graph.VertexCount * 1 * 4 + // the bytes for the vertex-index: 1 uint.
graph.EdgeCount * 2 * 4; // the bytes for the edges: one edge 2 uint's.
using (var stream = new System.IO.MemoryStream())
{
Assert.AreEqual(expectedSize, graph.Serialize(stream));
Assert.AreEqual(expectedSize, stream.Position);
}
// verify all edges.
var edges = graph.GetEdgeEnumerator(0);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(1, edges.First().Data[0]);
Assert.AreEqual(1, edges.First().Neighbour);
graph = new DirectedDynamicGraph(10, 1);
// add and compress.
graph.AddEdge(0, 1, 10);
graph.AddEdge(1, 2, 20);
graph.AddEdge(2, 3, 30);
graph.AddEdge(3, 4, 40);
graph.RemoveEdge(1, 2);
graph.Compress();
expectedSize = 1 + 8 + 8 + 8 + 4 + // the header: version bytes, three longs representing vertex and edge count and the size of the edge array and one int for fixed edge size.
graph.VertexCount * 4 + // the bytes for the vertex-index: 2 uint's.
graph.EdgeCount * 2 * 4; // the bytes for the edges: one edge 1 uint.
using (var stream = new System.IO.MemoryStream())
{
Assert.AreEqual(expectedSize, graph.Serialize(stream));
Assert.AreEqual(expectedSize, stream.Position);
}
}
public void TestRestrictedNetwork2()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, null);
graph.AddEdge(1, 0, 100, null);
graph.AddEdge(1, 2, 100, null);
graph.AddEdge(2, 1, 100, null);
graph.AddEdge(1, 3, 100, null);
graph.AddEdge(3, 1, 100, null);
graph.AddEdge(1, 4, 100, null);
graph.AddEdge(4, 1, 100, null);
graph.AddEdge(2, 3, 100, null);
graph.AddEdge(3, 2, 100, null);
graph.Compress();
// contract graph.
var priorities = new Dictionary <uint, float>();
priorities.Add(1, 0);
priorities.Add(0, 1);
priorities.Add(2, 2);
priorities.Add(3, 3);
priorities.Add(4, 4);
var hierarchyBuilder = new HierarchyBuilder(graph,
new MockPriorityCalculator(priorities),
new DykstraWitnessCalculator(int.MaxValue), (i) =>
{
if (i == 0 || i == 1 || i == 4)
{
return(new uint[][]
{
new uint[] { 0, 1, 4 }
});
}
return(null);
});
hierarchyBuilder.Run();
// check all edges.
ContractedEdgeData edgeData;
var edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x =>
{
if (x.Neighbour == 4)
{
edgeData = ContractedEdgeDataSerializer.Deserialize(x.Data[0], Constants.NO_VERTEX);
return(edgeData.Direction == true);
}
return(false);
});
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(500, edgeData.Weight);
Assert.AreEqual(true, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x =>
{
if (x.Neighbour == 4)
{
edgeData = ContractedEdgeDataSerializer.Deserialize(x.Data[0], Constants.NO_VERTEX);
return(edgeData.Direction == false);
}
return(false);
});
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(false, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(100, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(null, edge.GetContracted());
edge = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
edge = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edge);
edgeData = ContractedEdgeDataSerializer.Deserialize(edge.Data[0], Constants.NO_VERTEX);
Assert.AreEqual(200, edgeData.Weight);
Assert.AreEqual(null, edgeData.Direction);
Assert.AreEqual(1, edge.GetContracted());
}
public void TestPentagonDirected()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 1, 100, true);
graph.AddEdge(1, 0, 100, false);
graph.AddEdge(1, 2, 100, true);
graph.AddEdge(2, 1, 100, false);
graph.AddEdge(2, 3, 100, true);
graph.AddEdge(3, 2, 100, false);
graph.AddEdge(3, 4, 100, true);
graph.AddEdge(4, 3, 100, false);
graph.AddEdge(4, 0, 100, true);
graph.AddEdge(0, 4, 100, false);
graph.Compress();
// contract graph.
var priorityCalculator = new EdgeDifferencePriorityCalculator(graph, new DykstraWitnessCalculator(int.MaxValue));
priorityCalculator.ContractedFactor = 0;
priorityCalculator.DepthFactor = 0;
var hierarchyBuilder = new HierarchyBuilder(graph, priorityCalculator,
new DykstraWitnessCalculator(int.MaxValue), (i) => Enumerable.Empty <uint[]>());
hierarchyBuilder.Run();
// check edges.
var edges01 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges01);
var edges10 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges10);
var edges12 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges12);
var edges21 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges21);
var edges23 = graph.GetEdgeEnumerator(2).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges23);
var edges32 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 2);
Assert.IsNull(edges32);
var edges34 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges34);
var edges43 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNotNull(edges43);
var edges40 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 0);
Assert.IsNull(edges40);
var edges04 = graph.GetEdgeEnumerator(0).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNotNull(edges04);
var edges41 = graph.GetEdgeEnumerator(4).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges41);
var s1 = edges41.GetSequence1();
var s2 = edges41.GetSequence2();
Assert.AreEqual(1, s1.Length);
Assert.AreEqual(0, s1[0]);
Assert.AreEqual(1, s2.Length);
Assert.AreEqual(0, s2[0]);
var edges14 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 4);
Assert.IsNull(edges14);
var edges31 = graph.GetEdgeEnumerator(3).FirstOrDefault(x => x.Neighbour == 1);
Assert.IsNotNull(edges31);
s1 = edges31.GetSequence1();
s2 = edges31.GetSequence2();
Assert.AreEqual(1, s1.Length);
Assert.AreEqual(4, s1[0]);
Assert.AreEqual(1, s2.Length);
Assert.AreEqual(0, s2[0]);
var edges13 = graph.GetEdgeEnumerator(1).FirstOrDefault(x => x.Neighbour == 3);
Assert.IsNull(edges13);
}
public void TestCompress()
{
var graph = new DirectedDynamicGraph(10, 1);
// add and compress.
graph.AddEdge(0, 1, 1);
graph.Compress();
// verify all edges.
var edges = graph.GetEdgeEnumerator(0);
Assert.AreEqual(1, edges.First().Data[0]);
Assert.AreEqual(1, edges.First().Neighbour);
graph = new DirectedDynamicGraph(10, 1);
// add and compress.
graph.AddEdge(0, 1, 10);
graph.AddEdge(1, 2, 20);
graph.AddEdge(2, 3, 30);
graph.AddEdge(3, 4, 40);
graph.RemoveEdge(1, 2);
// verify all edges.
edges = graph.GetEdgeEnumerator(0);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(10, edges.First().Data[0]);
Assert.AreEqual(1, edges.First().Neighbour);
edges = graph.GetEdgeEnumerator(1);
Assert.IsFalse(edges.MoveNext());
edges = graph.GetEdgeEnumerator(2);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(30, edges.First().Data[0]);
Assert.AreEqual(3, edges.First().Neighbour);
edges = graph.GetEdgeEnumerator(3);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(40, edges.First().Data[0]);
Assert.AreEqual(4, edges.First().Neighbour);
// compress.
graph.Compress();
// verify all edges.
edges = graph.GetEdgeEnumerator(0);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(10, edges.First().Data[0]);
Assert.AreEqual(1, edges.First().Neighbour);
edges = graph.GetEdgeEnumerator(1);
Assert.IsFalse(edges.MoveNext());
edges = graph.GetEdgeEnumerator(2);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(30, edges.First().Data[0]);
Assert.AreEqual(3, edges.First().Neighbour);
edges = graph.GetEdgeEnumerator(3);
Assert.AreEqual(1, edges.Count());
Assert.AreEqual(40, edges.First().Data[0]);
Assert.AreEqual(4, edges.First().Neighbour);
}
public void TestQuadrilateralOneWay()
{
// build graph.
var graph = new DirectedDynamicGraph(ContractedEdgeDataSerializer.DynamicFixedSize);
graph.AddEdge(0, 2, 100, true);
graph.AddEdge(2, 0, 100, false);
graph.AddEdge(0, 3, 10, false);
graph.AddEdge(3, 0, 10, true);
graph.AddEdge(1, 2, 1000, false);
graph.AddEdge(2, 1, 1000, true);
graph.AddEdge(1, 3, 10000, true);
graph.AddEdge(3, 1, 10000, false);
graph.Compress(false);
var witnessCalculator = new DykstraWitnessCalculator(int.MaxValue);
// calculate witnesses for 0.
var forwardWitnesses = new EdgePath <float> [1];
var backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 2, new List <uint>(new uint[] { 3 }), new List <float>(new float[] { 110 }),
ref forwardWitnesses, ref backwardWitnesses, 0);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 0.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 3, new List <uint>(new uint[] { 2 }), new List <float>(new float[] { 110 }),
ref forwardWitnesses, ref backwardWitnesses, 0);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 2.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 0, new List <uint>(new uint[] { 1 }), new List <float>(new float[] { 1100 }),
ref forwardWitnesses, ref backwardWitnesses, 2);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 2.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 1, new List <uint>(new uint[] { 0 }), new List <float>(new float[] { 1100 }),
ref forwardWitnesses, ref backwardWitnesses, 2);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 1.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 3, new List <uint>(new uint[] { 2 }), new List <float>(new float[] { 11000 }),
ref forwardWitnesses, ref backwardWitnesses, 1);
Assert.AreEqual(2, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 1.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 2, new List <uint>(new uint[] { 3 }), new List <float>(new float[] { 11000 }),
ref forwardWitnesses, ref backwardWitnesses, 1);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(3, backwardWitnesses[0].Vertex);
// calculate witnesses for 3.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 0, new List <uint>(new uint[] { 1 }), new List <float>(new float[] { 10010 }),
ref forwardWitnesses, ref backwardWitnesses, 3);
Assert.AreEqual(1, forwardWitnesses[0].Vertex);
Assert.AreEqual(Constants.NO_VERTEX, backwardWitnesses[0].Vertex);
// calculate witnesses for 3.
forwardWitnesses = new EdgePath <float> [1];
backwardWitnesses = new EdgePath <float> [1];
witnessCalculator.Calculate(graph, (i) => null, 1, new List <uint>(new uint[] { 0 }), new List <float>(new float[] { 10010 }),
ref forwardWitnesses, ref backwardWitnesses, 3);
Assert.AreEqual(Constants.NO_VERTEX, forwardWitnesses[0].Vertex);
Assert.AreEqual(0, backwardWitnesses[0].Vertex);
}