four tests failing with an ImageComparisonFailure

[jboynyc]

I packaged v0.3.1 for nixpkgs (NixOS/nixpkgs#419858) and in the process discovered that four tests fail with an ImageComparisonFailure and a quite high RMS value:

• test_labels
• test_complex
• test_display_shortest_path
• test_labels_and_colors

For now I disabled those tests without investigating further, but I was wondering whether you see any pattern here or have any hunch why those might be failing on my system.

[iosonofabio]

Thank you!

I might have been a bit sloppy with releases until now since this is the first issue not from myself. Could it be the rng? I had that one before - which is why some layouts are fixed instead of computed during the test.

Later on I added more tests that depend on rng and since they were not failing for me I assumed it's ok.

I could fix all network layouts since that has nothing to do with iplotx. I'm very sick today but can try within a couple days?