public void AddEdge_adds_an_edge()
{
var vertexOne = new Vertex {
Id = 1
};
var vertexTwo = new Vertex {
Id = 2
};
var edgeOne = new Edge {
Id = 1
};
var edgeTwo = new Edge {
Id = 2
};
var graph = new Multigraph <Vertex, Edge>();
graph.AddVertices(new[] { vertexOne, vertexTwo });
graph.AddEdge(vertexOne, vertexTwo, edgeOne);
graph.AddEdge(vertexOne, vertexTwo, edgeTwo);
Assert.Equal(2, graph.Edges.Count());
Assert.Equal(2, graph.Edges.Intersect(new[] { edgeOne, edgeTwo }).Count());
Assert.Empty(graph.GetEdges(vertexTwo, vertexOne));
Assert.Equal(2, graph.GetEdges(vertexOne, vertexTwo).Count());
Assert.Equal(2, graph.GetEdges(vertexOne, vertexTwo).Intersect(new[] { edgeOne, edgeTwo }).Count());
}
public void AddEdges_adds_multiple_edges()
{
var vertexOne = new Vertex
{
Id = 1
};
var vertexTwo = new Vertex
{
Id = 2
};
var edgeOne = new Edge
{
Id = 1
};
var edgeTwo = new Edge
{
Id = 2
};
var edgeThree = new Edge
{
Id = 3
};
var graph = new Multigraph <Vertex, Edge>();
graph.AddVertices(new[] { vertexOne, vertexTwo });
graph.AddEdges(vertexOne, vertexTwo, new[] { edgeOne });
graph.AddEdges(vertexOne, vertexTwo, new[] { edgeTwo, edgeThree });
Assert.Equal(0, graph.GetEdges(vertexTwo, vertexOne).Count());
Assert.Equal(3, graph.GetEdges(vertexOne, vertexTwo).Count());
Assert.Equal(3, graph.GetEdges(vertexOne, vertexTwo).Intersect(new[] { edgeOne, edgeTwo, edgeThree }).Count());
}