public void ReadArc_Reads_Directed_Edge_And_Maps_Weight_When_Present(string inputStr, int expectedSrcVtxNum, int expectedTargVtxNum, double expectedWeight)
{
//Arrange
int srcNodeIndex = -1, targNodeIndex = -1;
if (expectedSrcVtxNum != expectedTargVtxNum)
{
srcNodeIndex = 0;
targNodeIndex = 1;
}
else
{
// self loops will have the same src/targ vertex num and the same index
srcNodeIndex = 0;
targNodeIndex = 0;
}
NetFileReader reader = new NetFileReader();
reader.NetworkAdjList = BasicAdjListGenerator.GenerateAdjListWithDataAttribs(2, 0, false, true, true); // num nodes created when the *Vertices header read
reader.VertexNumberMap.Add(expectedSrcVtxNum, srcNodeIndex);
if (expectedSrcVtxNum != expectedTargVtxNum) // only add the 2nd node if not a self loop
reader.VertexNumberMap.Add(expectedTargVtxNum, targNodeIndex);
reader.EdgeWeightsColIndex = 0;
//Act
reader.ReadArc(inputStr);
//Assert
Assert.Equal(1, reader.Network.EdgeCount);
// get the edge and check the mapped weight
IEdge myEdge = null;
foreach (IEdge edge in reader.NetworkAdjList.Edges)
{
myEdge = edge;
break;
}
if (double.IsNaN(expectedWeight))
{
Assert.Equal(0, reader.NetworkAdjList.EdgeAttributeCount);
}
else
{
var edgeAttribs = (IEdgeAttributes)reader.NetworkAdjList;
double mappedWeight = edgeAttribs.EdgeData.GetValue<double>(myEdge, reader.EdgeWeightsColIndex);
Assert.Equal(expectedWeight, mappedWeight);
}
}
public void ReadArc_Reads_Directed_Edge_And_Vertex_Numbers_From_Input(string inputStr, int expectedSrcVtxNum, int expectedTargVtxNum)
{
//Arrange
int srcNodeIndex = -1,targNodeIndex = -1;
if (expectedSrcVtxNum != expectedTargVtxNum)
{
srcNodeIndex = 0;
targNodeIndex = 1;
}
else
{
// self loops will have the same src/targ vertex num and the same index
srcNodeIndex = 0;
targNodeIndex = 0;
}
NetFileReader reader = new NetFileReader();
reader.NetworkAdjList = BasicAdjListGenerator.GenerateAdjListWithDataAttribs(2, 0, false, true, true); // num nodes created when the *Vertices header read
reader.VertexNumberMap.Add(expectedSrcVtxNum, srcNodeIndex);
if (expectedSrcVtxNum != expectedTargVtxNum) // only add the 2nd node if not a self loop
reader.VertexNumberMap.Add(expectedTargVtxNum, targNodeIndex);
//Act
reader.ReadArc(inputStr);
//Assert
Assert.Equal(1, reader.Network.EdgeCount);
INode expectedSrcNode = reader.NetworkAdjList.Nodes[srcNodeIndex];
INode expectedTargetNode = reader.NetworkAdjList.Nodes[targNodeIndex];
foreach (IEdge edge in reader.NetworkAdjList.Edges)
{
Assert.Same(expectedSrcNode, edge.SourceNode);
Assert.Same(expectedTargetNode, edge.DestinationNode);
}
}
