Merge ~racb/git-ubuntu:document-testing-strategy into git-ubuntu:master

FAILED: Continuous integration, rev:fb1bda2401f90482044060728acb70453144108f
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/496/
Executed test runs:
    FAILED: VM Setup

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/496//rebuild

PASSED: Continuous integration, rev:fb1bda2401f90482044060728acb70453144108f
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/497/
Executed test runs:
    SUCCESS: VM Setup
    SUCCESS: Build
    SUCCESS: Unit Tests
    IN_PROGRESS: Declarative: Post Actions

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/497//rebuild

Looks good. I'm also curious to see how autospec can be leveraged for improved testing against external components. I've been experimenting with it a bit against Launchpad; no particular insights from this just yet, but it definitely seems to work as expected. But can leave all that to a future update of this document.

There are many ways to skin cats, and the factory pattern is one way to deal with the need for multiple fixtures but not the only way, and may not be the cleanest solution in all cases, but it's great to have it documented here for when it is the best way to achieve it.

All the text you've added is good. Footnotes with links to deeper information elsewhere would be handy, although given the likelihood of link rot, may as well just leave this to readers' google-fu.

I'm not certain that having this in the coding style guidelines is going to be the most discoverable place for it, although content-wise it seems an ok fit. More traditionally this would go into a HACKING.md type doc, although I think "development-process.md" might be a better name. Anyway, I guess can something to think about when the docs get reorganized someday.

Agreed on all points - thanks!

PASSED: Continuous integration, rev:7ab1bb5dc734fd316a071d1ed5cd058aca413acf
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/505/
Executed test runs:
    SUCCESS: VM Setup
    SUCCESS: Build
    SUCCESS: Unit Tests
    IN_PROGRESS: Declarative: Post Actions

Click here to trigger a rebuild:
https://jenkins.ubuntu.com/server/job/git-ubuntu-ci/505//rebuild