Empty graph.
Singleton graph in a box.
A few tests with a disconnected graph of 10 vertices with loops in a box from -1 to 1.
Without weights, grid or bounds.
With weights and no grid.
With weights and grid and high temperature.
With weights and grid and high temperature and seed.
Full graph of 5 vertices, seed and no iterations:
[      0.1      0.2
       0.3      0.4
       0.5      0.6
       0.7      0.8
       0.9        1 ]