[jgrapht-users] DirectedGraph equality testing

[Aidan D. <ai...@on...>]

Dear all,
	I've been trying to test for deep vertex & edge equality in a
DirectedGraph.  An example is below.  It appears that this fails
because, I think, DefaultEdge needs a non-default hashCode
implementation.  My GitHub pull-request is at [1], but it causes more
problems than it solves.

Am I just incorrect in trying to use JGraphT in this way to check graph
equality?  Is there some other way I should be doing this?

DirectedGraph<String, DefaultEdge> g1 =
            new SimpleDirectedGraph<String,
DefaultEdge>(DefaultEdge.class);
        DirectedGraph<String, DefaultEdge> g2 =
            new SimpleDirectedGraph<String,
DefaultEdge>(DefaultEdge.class);

        g1.addVertex("A");
        g2.addVertex("A");

        assertEquals(g1, g2);

        g1.addVertex("B");
        g2.addVertex("B");

        assertEquals(g1, g2);

[1] https://github.com/jgrapht/jgrapht/pull/148

-- 
Dr Aidan Delaney
Principal Lecturer
Computing, Engineering & Maths
University of Brighton

@aidandelaney