public void Clique()
{
var graph = new UndirectedGraph <char, EdgeData>();
graph.AddNodes('a', 'b', 'c', 'd', 'e');
graph.AddEdges(
('a', 'b', dummyEdgeData),
('a', 'c', dummyEdgeData),
('a', 'd', dummyEdgeData),
('b', 'c', dummyEdgeData),
('b', 'd', dummyEdgeData),
('c', 'd', dummyEdgeData),
('c', 'e', dummyEdgeData)
);
graph.Clique(new char[] { 'a', 'b', 'c', 'd' }).Should().BeTrue();
graph.Clique(new char[] { 'a', 'b', 'c', 'd', 'e' }).Should().BeFalse();
}
