public void ContainsSelfLoops()
{
var net =new BasicAdjList(Guid.NewGuid());
BasicNode nodeA = net.CreateNode() as BasicNode;
BasicNode nodeB = net.CreateNode() as BasicNode;
BasicNode nodeC = net.CreateNode() as BasicNode;
BasicNode nodeD = net.CreateNode() as BasicNode;
net.CreateEdge(nodeA, nodeB);
net.CreateEdge(nodeA, nodeA);
net.CreateEdge(nodeA, nodeD);
net.CreateEdge(nodeD, nodeD);
net.CreateEdge(nodeD, nodeD);
bool result = nodeA.ContainsSelfLoops();
Assert.True(result);
result = nodeB.ContainsSelfLoops();
Assert.False(result);
result = nodeC.ContainsSelfLoops();
Assert.False(result);
result = nodeD.ContainsSelfLoops();
Assert.True(result);
}
public void CreateEdge_Assigns_Edge_Index()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
BasicEdge edgeA = net.CreateEdge(nodeA, nodeB) as BasicEdge;
BasicEdge edgeB = net.CreateEdge(nodeC, nodeB) as BasicEdge;
Assert.Equal(0, edgeA.Index);
Assert.Equal(1, edgeB.Index);
}
public void AddingEdges_Adds_Row_With_Matching_Key_In_EdgeData(int nodeCount, int edgeCount)
{
Random rand = new Random();
var net = new BasicAdjList(Guid.NewGuid());
var table = new DataAttributeTable<IEdge>();
table.Network = net;
net.EdgeData = table;
for (int i = 0; i < nodeCount; i++)
{
var node = net.CreateNode();
}
INode nodeA = null;
INode nodeB = null;
IEdge edge = null;
for (int i = 0; i < edgeCount; i++)
{
nodeA = net.Nodes[rand.Next(nodeCount)];
nodeB = net.Nodes[rand.Next(nodeCount)];
edge = net.CreateEdge(nodeA, nodeB);
Assert.Equal((i + 1), net.EdgeCount);
Assert.Equal((i + 1), table.RowCount);
Assert.True(table.RowOwnerMap.ContainsKey(edge));
}
}
public void ChangeEventsEnabled_When_False_Prevents_NetworkChanged_Fired_When_RemoveEdge_Is_Called(int nodeCount, int edgeCount, int edgesToRemove)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
Random rand = new Random();
for (int i = 0; i < nodeCount; i++)
net.CreateNode();
INode nodeA = null;
INode nodeB = null;
IEdge[] edges = new IEdge[edgeCount];
for (int i = 0; i < edgeCount; i++)
{
nodeA = net.Nodes[rand.Next(nodeCount)];
nodeB = net.Nodes[rand.Next(nodeCount)];
edges[i] = net.CreateEdge(nodeA, nodeB);
}
//---------------------
var helper = new NetworkChangedEventsTestHelper();
net.NetworkChanged += new NetworkChangedEventHandler<INetwork, NetworkChangedEventArgs>(helper.NetworkChanged_DummyHandler);
net.ChangeEventsEnabled = false;
for (int i = 0; i < edges.Length; i++)
{
net.RemoveEdge(edges[i]);
}
Assert.Equal(0, helper.NetworkChanged_TimesCalled);
}
public void Contains_ReturnsTrueWhenAnEdgeExists()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
bool result = net.Contains(edge);
Assert.True(result);
}
/// <summary>
/// Parses a particular string format to a network. Format is
/// "n,e,d|pair;pair;pair" where n = node count, e = edge count, d = true/false for directedness and
/// pair is a number pair of node indices indicating an edges. Ex: "5,3,false|0,1;1,2;3,5" *note that the
/// number of pairs should match the number of edges
/// </summary>
public static IBasicAdjList ParseToNetwork(string input, bool enableNodeData, bool enableEdgeData)
{
// n,e,directed|pair;
// 7,23,false|0,3;0,2;0,4;1,4;1,2;1,3;2,5;2,4;2,4;3,5;3,1;3,6;3,0;4,4;4,5;4,3;5,1;5,1;5,4;5,6;5,0;6,3;6,1;
IBasicAdjList network = null;
var split1 = input.Split(new[] {'|'});
var split2 = split1[0].Split(new[] { ',' });
int n = int.Parse(split2[0]);
int m = int.Parse(split2[1]);
bool directed = bool.Parse(split2[2]);
var split3 = split1[1].Split(new[] { ';' }); // pairs
if(split3.Length != m)
throw new ArgumentException(string.Format("The number of pairs {0} did not match the number of edges {1} in {2}", split3.Length, m, input));
INode a = null;
INode b = null;
using (var fac = new BasicAdjListFactory())
{
network = new BasicAdjList(Guid.NewGuid(), directed);
for(int i=0; i<n; i++)
network.CreateNode();
}
string[] pair = null;
int indexA = -1;
int indexB = -1;
for (int i = 0; i < split3.Length; i++ )
{
pair = split3[i].Split(new[] { ',' });
indexA = int.Parse(pair[0]);
indexB = int.Parse(pair[1]);
a = network.Nodes[indexA];
b = network.Nodes[indexB];
network.CreateEdge(a, b);
}
using (var fac = new DataAttributeTableFactory(network))
{
if (enableNodeData)
fac.CreateNodeDataTable();
if (enableEdgeData)
fac.CreateEdgeDataTable();
}
return network;
}
public void CreateEdge_Calls_Add_Edge_For_Source_And_Targ_Nodes()
{
//Arrange
var mockNodeA = new Mock<IBasicNode>();
var mockNodeB = new Mock<IBasicNode>();
var net = new BasicAdjList(Guid.NewGuid());
mockNodeA.Setup(foo => foo.Network).Returns(net);
mockNodeB.Setup(foo => foo.Network).Returns(net);
mockNodeA.Setup(foo => foo.Index).Returns(0);
mockNodeB.Setup(foo => foo.Index).Returns(1);
net.AddNewNode(mockNodeA.Object);
net.AddNewNode(mockNodeB.Object);
var edge = net.CreateEdge(mockNodeA.Object, mockNodeB.Object);
mockNodeA.Verify(foo => foo.AddEdge(edge), Times.AtLeastOnce());
mockNodeB.Verify(foo => foo.AddEdge(edge), Times.AtLeastOnce());
}
public void IsEdge_ReturnsTrueIfEdgeExistsBetweenTwoNodes()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
bool result = net.IsEdge(nodeA, nodeB);
Assert.True(result);
}
public void IsEdge_ReturnsTrueFor_Self_Looped_Edges()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeB, nodeB);
bool result = net.IsEdge(nodeB, nodeB);
Assert.True(result);
}
public void IsEdge_ReturnsFalseIf_Nodes_AreReversedButEdgeExists()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
bool result = net.IsEdge(nodeB, nodeA);
Assert.False(result);
}
public void IsEdge_ReturnsFalseIfEdgeDNE()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
bool result = net.IsEdge(nodeC, nodeA);
Assert.False(result);
}
public void EdgeCount(int nodeCount, int edgeCount)
{
var net = new BasicAdjList(Guid.NewGuid());
INode a = null, b = null;
a = net.CreateNode();
b = net.CreateNode();
for (int i = 0; i < edgeCount; i++)
net.CreateEdge(a, b);
Assert.Equal(net.EdgeCount, edgeCount);
}
public void GetEdge_With_Ignore_Direction_Param_Returns_Null_If_EdgeDNE(bool ignoreDirection)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeC, nodeA, ignoreDirection);
Assert.Null(result);
}
public void ItemGetter_Returns_Cell_Val_By_RowIndex_And_ColIndex()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var table = new DataAttributeTable<IEdge>();
table.Network = net;
table.Columns.Add(new DataColumn("X", typeof(string)));
var nodeA = net.CreateNode();
var nodeB = net.CreateNode();
var nodeC = net.CreateNode();
var edgeA = net.CreateEdge(nodeB, nodeC);
var edgeB = net.CreateEdge(nodeA, nodeC);
table.AddRow(edgeA);
table.AddRow(edgeB);
table.SetValue<string>(edgeA, 0, "valA");
table.SetValue<string>(edgeB, 0, "valB");
//Act
string val0 = (string)table[0, 0];
string val1 = (string)table[1, 0];
// verify primary keys
//Assert
Assert.Equal(val0, "valA");
Assert.Equal(val1, "valB");
}
public void SetValue_Of_T_Assigns_Object_To_Cell_Val_By_Owner_And_ColIndex()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var table = new DataAttributeTable<IEdge>();
table.Network = net;
table.Columns.Add(new DataColumn("X", typeof (string)));
var nodeA = net.CreateNode();
var nodeB = net.CreateNode();
var nodeC = net.CreateNode();
var edgeA = net.CreateEdge(nodeB, nodeC);
var edgeB = net.CreateEdge(nodeA, nodeC);
table.AddRow(edgeA);
table.AddRow(edgeB);
//Act
table.SetValue<string>(edgeA, 0, "valA");
table.SetValue<string>(edgeB, 0, "valB");
string val0 = (string)table.Rows[0][0];
string val1 = (string)table.Rows[1][0];
// verify primary keys
//Assert
Assert.Equal(val0, "valA");
Assert.Equal(val1, "valB");
}
public void ReverseEdge_DoesNotAffectNodeAccessorAndPredecessorLists()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
Type expectedType = typeof(BasicEdge);
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
bool result = nodeA.SuccessorList.Contains(nodeB);
Assert.True(result);
result = nodeA.PredecessorList.Contains(nodeB);
Assert.False(result);
result = nodeB.PredecessorList.Contains(nodeA);
Assert.True(result);
result = nodeB.SuccessorList.Contains(nodeA);
Assert.False(result);
net.ReverseEdge(edge);
result = nodeA.SuccessorList.Contains(nodeB);
Assert.False(result);
result = nodeA.PredecessorList.Contains(nodeB);
Assert.True(result);
result = nodeB.PredecessorList.Contains(nodeA);
Assert.False(result);
result = nodeB.SuccessorList.Contains(nodeA);
Assert.True(result);
}
public static IBasicAdjList GenerateAdjListWithDataAttribs(List<Point> edgeList, bool directed, bool enableNodeDataAttribs, bool enableEdgeDataAttribs)
{
var q = ((from p in edgeList
select p.X)
.Union((from p in edgeList
select p.Y))).Distinct();
var nodeIndices = q.ToList();
nodeIndices.Sort();
var net = new BasicAdjList(Guid.NewGuid(), directed);
for (int i = 0; i < nodeIndices.Count; i++)
net.CreateNode();
INode srcNode = null;
INode targNode = null;
for (int i = 0; i < edgeList.Count; i++)
{
srcNode = net.Nodes[edgeList[i].X];
targNode = net.Nodes[edgeList[i].Y];
net.CreateEdge(srcNode, targNode);
}
using (var fac = new DataAttributeTableFactory(net))
{
if (enableNodeDataAttribs)
fac.CreateNodeDataTable();
if (enableEdgeDataAttribs)
fac.CreateEdgeDataTable();
}
return net;
}
public void GetEdgeCount_For_NodeB_to_NodeB(int AtoBEdges, int BtoAEdges, int AtoAEdges, int BtoBEdges, bool ignoreDirection, int expectedCount)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
for (int i = 0; i < AtoBEdges; i++)
{
net.CreateEdge(nodeA, nodeB);
}
for (int i = 0; i < BtoAEdges; i++)
{
net.CreateEdge(nodeB, nodeA);
}
for (int i = 0; i < AtoAEdges; i++)
{
net.CreateEdge(nodeA, nodeA);
}
for (int i = 0; i < BtoBEdges; i++)
{
net.CreateEdge(nodeB, nodeB);
}
int result = net.GetEdgeCount(nodeB, nodeB, ignoreDirection);
Assert.Equal(expectedCount, result);
}
public void Edges_Count_Returns_The_Number_Of_Edges(int nodeCount)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
Assert.Equal(0, net.Edges.Count);
IEdge edgeA = net.CreateEdge(nodeA, nodeB);
Assert.Equal(1, net.Edges.Count);
IEdge edgeB = net.CreateEdge(nodeC, nodeB);
Assert.Equal(2, net.Edges.Count);
}
public void ReverseEdge_Throws_Ex_If_Edge_DNE_In_Network()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge0 = net.CreateEdge(nodeA, nodeB);
var net2 = new BasicAdjList(Guid.NewGuid());
INode node0 = net2.CreateNode();
INode node1 = net2.CreateNode();
IEdge edge1 = net2.CreateEdge(node0, node1);
var ex = Assert.Throws<ArgumentException>(() => net.ReverseEdge(edge1));
}
public void CreateEdge_Increments_Edge_Count_By_1_For_Self_Looped_Edge()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
Assert.Equal(0, net.EdgeCount);
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeB, nodeB);
Assert.Equal(1, net.EdgeCount);
}
public void ReverseEdge()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
Type expectedType = typeof(BasicEdge);
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
Assert.Same(nodeA, edge.SourceNode);
Assert.Same(nodeB, edge.DestinationNode);
net.ReverseEdge(edge);
Assert.NotNull(edge.SourceNode);
Assert.NotNull(edge.DestinationNode);
Assert.Same(nodeB, edge.SourceNode);
Assert.Same(nodeA, edge.DestinationNode);
}
public void GetEdge_Returns_Null_If_Edge_DNE()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeC, nodeA);
Assert.Null(result);
}
public void ReverseEdge_WithSelfLoop()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
Type expectedType = typeof(BasicEdge);
INode nodeA = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeA);
bool result = nodeA.SuccessorList.Contains(nodeA);
Assert.True(result);
result = nodeA.PredecessorList.Contains(nodeA);
Assert.True(result);
Assert.Equal(1, nodeA.SuccessorList.Count);
Assert.Equal(1, nodeA.PredecessorList.Count);
net.ReverseEdge(edge);
result = nodeA.SuccessorList.Contains(nodeA);
Assert.True(result);
result = nodeA.PredecessorList.Contains(nodeA);
Assert.True(result);
Assert.Equal(1, nodeA.SuccessorList.Count);
Assert.Equal(1, nodeA.PredecessorList.Count);
}
public void AddRow_Appends_New_Row_And_Updates_Map()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var table = new DataAttributeTable<IEdge>();
table.Network = net;
var nodeA = net.CreateNode();
var nodeB = net.CreateNode();
var edge = net.CreateEdge(nodeA, nodeB);
//Act
table.AddRow(edge);
//Assert
Assert.Equal(table.Rows.Count, 1);
Assert.Equal(table.RowOwnerMap.Count, 1);
Assert.True(table.RowOwnerMap.ContainsKey(edge));
}
public void GetEdge_Returns_Null_If_Nodes_Are_Reversed_But_Edge_Exists()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeB, nodeA);
Assert.Null(result);
}
public void RemoveRow_Deletes_Row_For_Specified_Node_And_Updates_Map()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
var nodeA = net.CreateNode();
var nodeB = net.CreateNode();
var nodeC = net.CreateNode();
var edgeA = net.CreateEdge(nodeB, nodeC);
var edgeB = net.CreateEdge(nodeA, nodeC);
var table = new DataAttributeTable<IEdge>();
table.Network = net;
table.AddRow(edgeA);
table.AddRow(edgeB);
Assert.Equal(table.Rows.Count, 2);
Assert.Equal(table.RowOwnerMap.Count, 2);
//Act
table.RemoveRow(edgeB);
//Assert
Assert.Equal(table.Rows.Count, 1);
Assert.Equal(table.RowOwnerMap.Count, 1);
Assert.False(table.RowOwnerMap.ContainsKey(edgeB));
}
public void GetEdge_With_Ignore_Direction_Param_If_Nodes_AreReversed(bool ignoreDirection, bool nullExpected)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeB, nodeA, ignoreDirection);
if (nullExpected)
{
Assert.Null(result);
}
else
{
Assert.NotNull(result);
Assert.Same(result, edge);
}
}
public void Copy_For_Nodes_For_Empty_Network(int numNodes, int numEdges, bool isDirected, bool selfLoops, bool multiEdges, int[] intVals, double[] doubleVals, bool[] boolVals, string[] stringVals)
{
//Arrange
var copier = new DataAttributeTableCopier();
#region Create src and target networks
IBasicAdjList src = BasicAdjListGenerator.GenerateAdjListWithDataAttribs(numNodes, numEdges, isDirected, true, false);
var builder = new DataAttributesBuilder();
var colIndex = builder.AddColumn((INodeAttributes)src, typeof(int));
builder.PopulateCol<int, INode>(src.NodeData, colIndex, intVals);
colIndex = builder.AddColumn((INodeAttributes)src, typeof(double));
builder.PopulateCol<double, INode>(src.NodeData, colIndex, doubleVals);
colIndex = builder.AddColumn((INodeAttributes)src, typeof(bool));
builder.PopulateCol<bool, INode>(src.NodeData, colIndex, boolVals);
colIndex = builder.AddColumn((INodeAttributes)src, typeof(string));
builder.PopulateCol<string, INode>(src.NodeData, colIndex, stringVals);
// create a copy of src network and enable node data attribs
IBasicAdjList targ = new BasicAdjList(Guid.NewGuid(), isDirected);
foreach (var srcNode in src.Nodes)
{
targ.CreateNode();
}
INode a;
INode b;
foreach (var srcEdge in src.Edges)
{
a = targ.Nodes[srcEdge.SourceNode.Index];
b = targ.Nodes[srcEdge.DestinationNode.Index];
targ.CreateEdge(a, b);
}
using (var fac = new DataAttributeTableFactory(targ))
{
fac.CreateNodeDataTable();
}
#endregion
//Act
copier.Copy(src.NodeData, targ.NodeData);
//Assert
Assert.NotNull(targ.NodeData);
Assert.Equal(src.NodeData.ColumnCount, targ.NodeData.ColumnCount);
Assert.Equal(numNodes, targ.NodeData.RowCount);
for (int i = 0; i < targ.NodeDataAttributeCount; i++)
{
Assert.Equal(src.NodeData.DataTypes[i], targ.NodeData.DataTypes[i]);
Assert.Equal(src.NodeData.ColumnNames[i], targ.NodeData.ColumnNames[i]);
Assert.Equal(src.NodeData.ColumnDefaultValues[i], targ.NodeData.ColumnDefaultValues[i]);
}
}
public void GetEdge_With_Ignore_Direction_Param_ReturnsEdge(bool ignoreDirection)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge0 = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeA, nodeB, ignoreDirection);
Assert.NotNull(result);
Assert.Same(result, edge0);
Assert.Same(nodeA, edge0.SourceNode);
Assert.Same(nodeB, edge0.DestinationNode);
}