public void HyperGraph_GetAdjacentEdges_has_to_work()
{
HyperGraph hyperGraph = new HyperGraph();
Vertex v1 = hyperGraph.AddVertex("00");
Vertex v2 = hyperGraph.AddVertex("01");
Vertex v3 = hyperGraph.AddVertex("10");
HyperEdge h1 = hyperGraph.AddEdge("00", "00", "00");
HyperEdge h2 = hyperGraph.AddEdge("00", "01", "10");
HyperEdge h3 = hyperGraph.AddEdge("00", "00");
HyperEdge h4 = hyperGraph.AddEdge("01", "10");
List <HyperEdge> neighbors = hyperGraph.GetAdjacentEdges(v1).ToList();
Assert.AreEqual(3, neighbors.Count);
Assert.IsTrue(neighbors.Contains(h1));
Assert.IsTrue(neighbors.Contains(h2));
Assert.IsTrue(neighbors.Contains(h3));
neighbors = hyperGraph.GetAdjacentEdges(v2).ToList();
Assert.AreEqual(2, neighbors.Count);
Assert.IsTrue(neighbors.Contains(h2));
Assert.IsTrue(neighbors.Contains(h4));
neighbors = hyperGraph.GetAdjacentEdges(v2, 2).ToList();
Assert.AreEqual(1, neighbors.Count);
Assert.IsTrue(neighbors.Contains(h4));
neighbors = hyperGraph.GetAdjacentEdges(v2, 3).ToList();
Assert.AreEqual(1, neighbors.Count);
Assert.IsTrue(neighbors.Contains(h2));
}