spec/integration: added integration testing

[mssola]

This commit is the foundation for integration testing in the Portus repository.
It uses docker containers to setup everything, and a lot of magic has been
written around RSpec so it integrates with the style of the other tests.

This commit does not handle on purpose the following (which have been submitted
as separate issues):

• Test multiple versions of Docker.
• Test crono
• Test portusctl
• Cover as much of the registry client as possible
• Add integration testing into CI

Fixes #745

Signed-off-by: Miquel Sabaté Solà [email protected]

[flavio]

So we cannot run integration tests on travis, right?

[mssola]

Not for now. I tried to do it (in multiple different ways) but I had lots of problems. I opened #847 for this same reason.

[flavio]

It looks good, there are some really minor issues to fix 👏

Two nice things we can figure out in the future:

• have a summary table showing how the test are doing with docker client version + registry version
• be able to test everything using portus from RPM packages

[mssola]

have a summary table showing how the test are doing with docker client version + registry version

That's already solved :) Take a look at this line of code inside of the setup_describe method:

  describe "#{name} (distribution: #{version}) (LDAP: #{ldap?})", tags do

When we support multiple docker versions, we can just add it to this string 😉

be able to test everything using portus from RPM packages

Maybe related to #845 ?

[mssola]

I'll be pushing fixes without squashing. I'll squash all my commits whenever it's ready to be merged 😉

[flavio]

Good, ping me when you need another review to be done.

[mssola]

@flavio should be fine now 😉

[flavio]

LGTM!