Testing

[automata]

Implement tests. It is easy to imagine tests to commands, but should we go deeper and test the rendered canvas?

[forresto]

That would be good for Draw to make sure the commands stick. Could as
simple as
getImageData 0,0,1,1
Then make sure that's the expected rgb vals.

[forresto]

We'll need some mojo to tell Travis to install node-canvas' deps.

[forresto]

Looks like that might fix cairo on travis, but now there is a component.io snafu.

See https://github.com/noflo/noflo-canvas/blob/master/spec/MakeColor.coffee for an example component test.

[forresto]

652e9f1 fixed that issue, tests pass now!