protected static void RemoveOutEdgeIf_Clusters_Test(
[NotNull] ClusteredAdjacencyGraph <int, Edge <int> > graph)
{
Assert.AreEqual(0, graph.RemoveOutEdgeIf(1, edge => true));
AssertEmptyGraph(graph);
var edge12 = new Edge <int>(1, 2);
var edge13 = new Edge <int>(1, 3);
var edge13Bis = new Edge <int>(1, 3);
var edge14 = new Edge <int>(1, 4);
var edge24 = new Edge <int>(2, 4);
var edge31 = new Edge <int>(3, 1);
var edge33 = new Edge <int>(3, 3);
graph.AddVerticesAndEdgeRange(new[] { edge12, edge13, edge13Bis, edge14, edge24, edge31, edge33 });
Assert.AreEqual(3, graph.RemoveOutEdgeIf(1, edge => edge.Target >= 3));
AssertHasVertices(graph, new[] { 1, 2, 3, 4 });
AssertHasEdges(graph, new[] { edge12, edge24, edge31, edge33 });
Assert.AreEqual(0, graph.RemoveOutEdgeIf(3, edge => edge.Target > 5));
AssertHasVertices(graph, new[] { 1, 2, 3, 4 });
AssertHasEdges(graph, new[] { edge12, edge24, edge31, edge33 });
Assert.AreEqual(2, graph.RemoveOutEdgeIf(3, edge => true));
AssertHasVertices(graph, new[] { 1, 2, 3, 4 });
AssertHasEdges(graph, new[] { edge12, edge24 });
}