Graph with no vertices
[ 0-by-0 ]
3-cycle
[        0        0
         0        3 ]
Three self-loops
[        0        0
         0        3 ]
One self-loop and two parallel edges
[        0        0
         0        3 ]
Simple, undirected graph
[        0        0        0        0
         0        0        2        2
         0        2        1        2
         0        2        2        0 ]
Simple, directed graph
[        0        1        0
         0        1        1
         0        2        1
         1        2        1 ]
Undirected, self-loops, no multiedges
[        0        0        0        0
         0        0        1        1
         0        1        1        3
         0        1        3        2 ]
Directed, self-loops, no multiedges
[        0        0        0
         0        2        2
         0        1        2
         1        1        2 ]
Undirected multigraph, no self-loops
[        0        0        0        0        0
         0        0        1        0        1
         0        1        2        0        4
         0        0        0        0        0
         0        1        4        0        0 ]
Directed multigraph, no self-loops
[        0        1        0
         0        1        1
         0        2        1
         0        0        0
         0        4        1 ]
Undirected multigraph with self-loops
[        0        0        0        0        0
         0        0        1        0        1
         0        1        1        0        3
         0        0        0        0        0
         0        1        3        0        3 ]
Directed multigraph with self-loops
[        0        0        0
         0        2        2
         0        1        2
         0        0        0
         0        3        2 ]
Weighted, simple, undirected graph
[        0        0        0        0
         0        0        2        7
         0        2        0        5
         0        7        5        0 ]
Weighted, simple, directed graph
[        0        1        0
         0        3        2
         0       -2       -1
         7        9        6 ]
Weighted, undirected, self-loops, no multiedges
[        0        0        0        0
         0        0        6        8
         0        6        2       11
         0        8       11        9 ]
Weighted, directed, self-loops, no multiedges
[        0        0        0
         0       12       10
         0        3        3
        11        8       19 ]
Weighted, undirected multigraph, no self-loops
[        0        0        0        0        0
         0        0        6        0        8
         0        6        3        0       19
         0        0        0        0        0
         0        8       19        0        0 ]
Weighted, directed multigraph, no self-loops
[        0        4        0
         0        6        5
         0        4        2
         0        0        0
         0       36        9 ]
Weighted, undirected multigraph with self-loops
[        0        0        0        0        0
         0        0        7        0        9
         0        7        2        0       12
         0        0        0        0        0
         0        9       12        0       15 ]
Weighted, directed multigraph with self-loops
[        0        0        0
         0       12       10
         0        3        3
         0        0        0
         0       31       19 ]
Directed: dout is small, cropped JDM (3x3)
[        0        1        0
         0        1        1
         0        2        1 ]
Directed: din is small, cropped JDM (4, 2)
[        0        1
         0        1
         0        2
         1        2 ]
Directed: Automatic resize, dout < 0 (4x2)
[        0        1
         0        1
         0        2
         1        2 ]
Directed: Valid dout and din (5x5)
[        0        1        0        0        0
         0        1        1        0        0
         0        2        1        0        0
         1        2        1        0        0
         0        0        0        0        0 ]
Undirected: dout is small, cropped JDM (3x4)
[        0        0        0        0
         0        0        2        2
         0        2        1        2 ]
Undirected: din is small, cropped JDM (4x3)
[        0        0        0
         0        0        2
         0        2        1
         0        2        2 ]
Undirected: Automatic resize, dout or din < 0 (4x4)
[        0        0        0        0
         0        0        2        2
         0        2        1        2
         0        2        2        0 ]
Undirected: Valid dout and din (5x5)
[        0        0        0        0        0
         0        0        2        2        0
         0        2        1        2        0
         0        2        2        0        0
         0        0        0        0        0 ]