Hosting Juju charms on GitHub and attending to Continuous Integration too...

[Frode Nordahl]

Hey all Juju developers,

Of all the wonders of creating and manufacturing charm code, testing said
code is not as glamorous, or is it?

Whenever you release your next version of your code, make sure to have it
tested on every supported operating system release. Does this sound tedious
or cumbersome to you? It does not have to be that way.

There are numerous tools and even services freely available to automate
testing your software. For this post I would like to highlight Travis CI as
an example of one of these services.

How to do it? Simple, add a .travis.yml to your repository and add your
repository to the Travis CI service [1]. Travis CI is based on Ubuntu
technology enabling us to further empower their services with the likes of
LXC/LXD to serve our purposes of testing Juju charms on vagarious operating
system releases.

Have a look at this example code:
https://github.com/marcoceppi/charm-mysql/blob/cefb77fafcd1ee36d4dc30c14d07aa857d5273a2/.travis.yml

And this is an example of the output it could provide for your code:
https://travis-ci.org/marcoceppi/charm-mysql/builds/218456769

[1]: https://docs.travis-ci.com/user/getting-started/

Keep on hacking and testing your code in the free world!

-- 
Frode Nordahl
Software Engineer
Canonical Ltd.
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