> tests which create a figure should use the cleanup decorator

I wasn't sure. The majority of the tests in this file **don't** use the `@cleanup` decorator so I went with the majority. And from what I can see the same applies elsewhere.

> It's hard to see in the travis output because of the multiprocessing

Cartopy testing doesn't use multiprocessing. :confused:

> @rhattersley - would you mind opening a PR to fix this?

To be honest, I'm not 100% sure what needs fixing. There are plenty of other tests which create figures but which don't use the `@cleanup` decorator but they don't seem to be causing the warning ... ? Why the difference? What exactly is it that needs changing?

Plus, if I was to submit a PR to tidy-up the testing I'd be sorely tempted to make it use unittest instead of nose. :wink: