Investigate ways to speed up rspec run

[Br3nda]

A fast test suite is run more often

[pozorvlak]

+1. Some thoughts:

• Smart test-runners: I looked into various gems for preloading tests or only running relevant tests soon after the project started, but the number of stale-cache problems I ran into made me give up; however, the tooling's probably improved since then.
• Profile our tests: obviously. I think we'll find that the tests in spec/features are much slower than others - at least, they always seem to hold the top 3 spots reported by rspec. Then I guess we'd want to rewrite slow tests to be lower-level. Or maybe we could have a rake spec_fast target to only run the fast tests?
• DB-less tests: is this feasible in Rails? It's common advice for speeding up tests in other ecosystems.

[CloCkWeRX]

For travis, we can turn of 'build branches' and rely on only pull requests building maybe.

[Br3nda]

Sounds like a plan. I think we can configure Travis to only run on pushes to the dev and master branch.

[Br3nda]

I've seen DB-less tests -- they use a lot of

expect(Garden).to receive(:where).with(args).and_return [garden1, garden2]

[stale[bot]]

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