No nodes:
directed: false
vcount: 0
edges: {
}
No edges:
directed: false
vcount: 3
edges: {
}
Make a star of double edges:
directed: true
vcount: 5
edges: {
1 0
1 0
2 0
2 0
3 0
3 0
4 0
4 0
}
Make a line:
directed: true
vcount: 7
edges: {
1 0
2 1
3 2
4 3
5 4
6 5
}
Checking negative number of nodes error handling.
Checking too few types error handling.
Checking too many types error handling.
Checking negative type for error handling.
Checking too big type for error handling.
Checking negative preference error handling.
