protected static void InEdge_Test(
IMutableBidirectionalGraph <int, Edge <int> > graph)
{
var edge11 = new Edge <int>(1, 1);
var edge13 = new Edge <int>(1, 3);
var edge21 = new Edge <int>(2, 1);
var edge41 = new Edge <int>(4, 1);
graph.AddVerticesAndEdgeRange(new[] { edge11, edge13, edge21, edge41 });
Assert.AreSame(edge11, graph.InEdge(1, 0));
Assert.AreSame(edge41, graph.InEdge(1, 2));
Assert.AreSame(edge13, graph.InEdge(3, 0));
}
protected static void InEdge_Throws_Test(
IMutableBidirectionalGraph <int, Edge <int> > graph)
{
const int vertex1 = 1;
const int vertex2 = 2;
// ReSharper disable ReturnValueOfPureMethodIsNotUsed
Assert.Throws <VertexNotFoundException>(() => graph.InEdge(vertex1, 0));
graph.AddVertex(vertex1);
graph.AddVertex(vertex2);
AssertIndexOutOfRange(() => graph.InEdge(vertex1, 0));
graph.AddEdge(new Edge <int>(1, 2));
AssertIndexOutOfRange(() => graph.InEdge(vertex1, 5));
// ReSharper restore ReturnValueOfPureMethodIsNotUsed
}